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Bado PP, Salum GA, Rohde LA, Gadelha A, Pan PM, Miguel EC, Tripp G, Furukawa E. Is waiting for rewards good for you? No association between impulsive choice, psychopathology, and functional outcomes in a large cohort sample. JCPP ADVANCES 2024; 4:e12231. [PMID: 38827985 PMCID: PMC11143955 DOI: 10.1002/jcv2.12231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 02/19/2024] [Indexed: 06/05/2024] Open
Abstract
Background A stronger preference for immediate rewards has been reported in individuals with ADHD and other disorders. However, the consistency of the associations between this preference and psychiatric conditions as well as functional outcomes have been questioned. Research on its association with longitudinal outcomes is scarce. Methods The current study used data on a choice delay task (CDT) from a school-based cohort of Brazilian children with those at higher risk for psychiatric disorders over-sampled (n = 1917). The sample included typically developing children (n = 1379), those with ADHD (n = 213), and other disorders. The frequency of the trials where children chose a larger later reward versus a smaller sooner reward was compared for those with ADHD and typically developing children. Cross-sectionally and longitudinally, the study also evaluated whether children's preference for larger delayed rewards at baseline predicted the presence of psychiatric disorders and functional life outcomes (academic performance, alcohol use, early pregnancy, criminal conviction, BMI). Results Children with ADHD and their typically developing peers performed similarly on the CDT. Their baseline task performance was not related to psychiatric conditions or life outcomes. Conclusions The current results raise questions regarding the use of the CDT with diverse populations and whether a preference for larger delayed rewards is predictive of positive long-term outcomes as widely assumed.
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Affiliation(s)
- Patricia P. Bado
- Hospital de Clínicas de Porto Alegre (HCPA)Universidade Federal Do Rio Grande Do Sul (UFRGS)Porto AlegreBrazil
- Pontifícia Universidade Católica do Rio de Janeiro (PUC‐Rio)Rio de JaneiroBrazil
| | - Giovanni A. Salum
- Hospital de Clínicas de Porto Alegre (HCPA)Universidade Federal Do Rio Grande Do Sul (UFRGS)Porto AlegreBrazil
- National Institute of Developmental Psychiatry for Children and Adolescents & National Center for Innovation and Research in Mental HealthSão PauloBrazil
| | - Luis A. Rohde
- National Institute of Developmental Psychiatry for Children and Adolescents & National Center for Innovation and Research in Mental HealthSão PauloBrazil
- ADHD Outpatient Program & Developmental Psychiatry ProgramHospital de Clínicas de Porto AlegreFederal University of Rio Grande Do SulPorto AlegreBrazil
- Medical Council UniEduKSão PauloBrazil
| | - Ary Gadelha
- National Institute of Developmental Psychiatry for Children and Adolescents & National Center for Innovation and Research in Mental HealthSão PauloBrazil
- Universidade Federal de São Paulo (UNIFESP)São PauloBrazil
- Laboratório de Neurociências Integrativas (Linc)Universidade Federal de São Paulo (UNIFESP)São PauloBrazil
| | - Pedro M. Pan
- National Institute of Developmental Psychiatry for Children and Adolescents & National Center for Innovation and Research in Mental HealthSão PauloBrazil
- Laboratório de Neurociências Integrativas (Linc)Universidade Federal de São Paulo (UNIFESP)São PauloBrazil
| | - Eurípedes C. Miguel
- National Institute of Developmental Psychiatry for Children and Adolescents & National Center for Innovation and Research in Mental HealthSão PauloBrazil
- Universidade de São Paulo (USP)São PauloBrazil
| | - Gail Tripp
- Okinawa Institute of Science and Technology (OIST) Graduate UniversityOnna‐sonOkinawaJapan
| | - Emi Furukawa
- Okinawa Institute of Science and Technology (OIST) Graduate UniversityOnna‐sonOkinawaJapan
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Sloan ME, Sanches M, Tanabe J, Gowin JL. Delay discounting and family history of psychopathology in children ages 9-11. Sci Rep 2023; 13:21977. [PMID: 38081908 PMCID: PMC10713649 DOI: 10.1038/s41598-023-49148-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/05/2023] [Indexed: 12/18/2023] Open
Abstract
Delay discounting is a tendency to devalue delayed rewards compared to immediate rewards. Evidence suggests that steeper delay discounting is associated with psychiatric disorders across diagnostic categories, but it is unclear whether steeper delay discounting is a risk factor for these disorders. We examined whether children at higher risk for psychiatric disorders, based on family history, would demonstrate steeper delay discounting behavior using data from the Adolescent Brain Cognitive Development (ABCD) study, a nationally representative sample of 11,878 children. We looked at associations between delay discounting behavior and family history of alcohol problems, drug problems, depression, mania, schizophrenia, and suicidal behavior. Correlations between family history of psychopathology and delay discounting behavior were small, ranging from ρ = - 0.02 to 0.04. In mixed effects models controlled for sociodemographic factors, family history of psychopathology was not associated with steeper delay discounting behavior. Sociodemographic factors played a larger role in predicting delay discounting behavior than family history of psychopathology. These results do not support the hypothesis that children with greater risk for psychopathology display steeper delay discounting behavior.
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Affiliation(s)
- Matthew E Sloan
- Addictions Division, Centre for Addiction and Mental Health, 100 Stokes Street, Toronto, ON, M6J 1H4, Canada.
- Division of Neurosciences and Clinical Translation, Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.
- Department of Psychological Clinical Science, University of Toronto Scarborough, Toronto, ON, Canada.
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, ON, Canada.
| | - Marcos Sanches
- Biostatistics Core, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Jody Tanabe
- Department of Radiology, University of Colorado Anschutz Medical Campus, 12700 E. 19th Ave., MSC 279, Aurora, CO, 80045, USA
| | - Joshua L Gowin
- Department of Radiology, University of Colorado Anschutz Medical Campus, 12700 E. 19th Ave., MSC 279, Aurora, CO, 80045, USA.
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Wenzel JM, Zlebnik NE, Patton MH, Smethells JR, Ayvazian VM, Dantrassy HM, Zhang LY, Mathur BN, Cheer JF. Selective chemogenetic inactivation of corticoaccumbal projections disrupts trait choice impulsivity. Neuropsychopharmacology 2023; 48:1821-1831. [PMID: 37208501 PMCID: PMC10579332 DOI: 10.1038/s41386-023-01604-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 05/02/2023] [Accepted: 05/05/2023] [Indexed: 05/21/2023]
Abstract
Impulsive choice has enduring trait-like characteristics and is defined by preference for small immediate rewards over larger delayed ones. Importantly, it is a determining factor in the development and persistence of substance use disorder (SUD). Emerging evidence from human and animal studies suggests frontal cortical regions exert influence over striatal reward processing areas during decision-making in impulsive choice or delay discounting (DD) tasks. The goal of this study was to examine how these circuits are involved in decision-making in animals with defined trait impulsivity. To this end, we trained adolescent male rats to stable behavior on a DD procedure and then re-trained them in adulthood to assess trait-like, conserved impulsive choice across development. We then used chemogenetic tools to selectively and reversibly target corticostriatal projections during performance of the DD task. The prelimbic region of the medial prefrontal cortex (mPFC) was injected with a viral vector expressing inhibitory designer receptors exclusively activated by designer drugs (Gi-DREADD), and then mPFC projections to the nucleus accumbens core (NAc) were selectively suppressed by intra-NAc administration of the Gi-DREADD actuator clozapine-n-oxide (CNO). Inactivation of the mPFC-NAc projection elicited a robust increase in impulsive choice in rats with lower vs. higher baseline impulsivity. This demonstrates a fundamental role for mPFC afferents to the NAc during choice impulsivity and suggests that maladaptive hypofrontality may underlie decreased executive control in animals with higher levels of choice impulsivity. Results such as these may have important implications for the pathophysiology and treatment of impulse control, SUDs, and related psychiatric disorders.
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Affiliation(s)
- Jennifer M Wenzel
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
- Department of Psychological Sciences, University of San Diego, San Diego, CA, 92110, USA.
| | - Natalie E Zlebnik
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
- Division of Biomedical Sciences, University of California, Riverside School of Medicine, Riverside, CA, 92521, USA.
| | - Mary H Patton
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - John R Smethells
- Hennepin Healthcare Research Institute, Minneapolis, MN, 55404, USA
| | - Victoria M Ayvazian
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Hannah M Dantrassy
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Lan-Yuan Zhang
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Brian N Mathur
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Joseph F Cheer
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
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4
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Martínez-Loredo V. Critical appraisal of the discussion on delay discounting by Bailey et al. and Stein et al.: A scientific proposal for a reinforcer pathology theory 3.0. NEW IDEAS IN PSYCHOLOGY 2023. [DOI: 10.1016/j.newideapsych.2022.101006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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5
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Qi H, Bi C, Kang Q, Wu Q, Wu D. Far from the Future: Internet Addiction Association with Delay Discounting Among Adolescence. Int J Ment Health Addict 2022. [DOI: 10.1007/s11469-022-00951-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Defoe IN, Khurana A, Betancourt LM, Hurt H, Romer D. Cascades From Early Adolescent Impulsivity to Late Adolescent Antisocial Personality Disorder and Alcohol Use Disorder. J Adolesc Health 2022; 71:579-586. [PMID: 35934585 PMCID: PMC11184504 DOI: 10.1016/j.jadohealth.2022.06.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 06/01/2022] [Accepted: 06/08/2022] [Indexed: 10/31/2022]
Abstract
PURPOSE The behavioral disinhibition model (BDM) posits that a liability toward impulsivity evident by early adolescence underlies the coemergence of antisocial behavior and alcohol use (i.e., problem behaviors) in early-adolescence to mid-adolescence, but that the subsequent development of these problem behaviors (rather than impulsivity itself) predicts the emergence of antisocial personality disorder (APD) and alcohol use disorder (AUD) in late adolescence. The present study was designed to test these predictions of the BDM from early to late adolescence. METHODS We used five-year longitudinal self-report data from the Philadelphia Trajectory Study that was collected from 2006-2012. Mediational analyses were performed using the Random Intercept Cross-lagged Panel Model, which enables the detection of within-person predictions of changes in problem behaviors during adolescence. The sample was ethnically and socioeconomically diverse, including 364 urban US community youth (at baseline: Mage = 13.51(.95); 49.1% female). RESULTS Consistent with the BDM, mediational analyses revealed that changes in early adolescent impulsivity predicted late adolescent APD and AUD criteria, mediated by changes in mid-adolescent alcohol use and conduct problems. DISCUSSION Interventions targeting impulsivity in early adolescence could potentially halt the cascading chain of events leading to both late adolescent APD and AUD by decelerating growth in antisocial behavior and alcohol use during early-adolescence to mid-adolescence. From mid-adolescence to late-adolescence, the consequences of early impulsivity, especially involvement in antisocial behaviors, become a more relevant predictor of both APD and AUD rather than impulsivity itself.
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Affiliation(s)
- Ivy N Defoe
- Forensic Child and Youth Care Sciences, University of Amsterdam, Amsterdam, The Netherlands.
| | - Atika Khurana
- Counseling Psychology and Human Services Department, University of Oregon, Eugene, Oregon
| | - Laura M Betancourt
- Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Hallam Hurt
- Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Daniel Romer
- Annenberg Public Policy Center, The University of Pennsylvania, Philadelphia, Pennsylvania
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7
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Tunney RJ. Economic and social deprivation predicts impulsive choice in children. Sci Rep 2022; 12:8942. [PMID: 35624120 PMCID: PMC9142580 DOI: 10.1038/s41598-022-12872-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/10/2022] [Indexed: 01/01/2023] Open
Abstract
Impulsivity is an individual difference in decision-making that is a risk factor for a number of health concerns including addiction and obesity. Although impulsivity has a large heritable component, the health concerns associated with impulsivity are not uniformly distributed across society. For example, people from poorer backgrounds are more likely to be overweight, and be dependent on tobacco or alcohol. This suggests that the environmental component of impulsivity might be related to economic circumstances and the availability of resources. This paper provides evidence that children aged 4 to 12 from the most deprived areas in England show greater impulsivity in the form of delay discounting than do children from the least deprived areas. The data are discussed with reference to scarcity-based models of decision-making and to public health inequalities.
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8
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Reed DD, Strickland JC, Gelino BW, Hursh SR, Jarmolowicz DP, Kaplan BA, Amlung M. Applied Behavioral Economics and Public Health Policies: Historical Precedence and Translational Promise. Behav Processes 2022; 198:104640. [DOI: 10.1016/j.beproc.2022.104640] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/11/2022] [Accepted: 04/05/2022] [Indexed: 12/14/2022]
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9
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Keidel K, Rramani Q, Weber B, Murawski C, Ettinger U. Individual Differences in Intertemporal Choice. Front Psychol 2021; 12:643670. [PMID: 33935897 PMCID: PMC8085593 DOI: 10.3389/fpsyg.2021.643670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/08/2021] [Indexed: 11/23/2022] Open
Abstract
Intertemporal choice involves deciding between smaller, sooner and larger, later rewards. People tend to prefer smaller rewards that are available earlier to larger rewards available later, a phenomenon referred to as temporal or delay discounting. Despite its ubiquity in human and non-human animals, temporal discounting is subject to considerable individual differences. Here, we provide a critical narrative review of this literature and make suggestions for future work. We conclude that temporal discounting is associated with key socio-economic and health-related variables. Regarding personality, large-scale studies have found steeper temporal discounting to be associated with higher levels of self-reported impulsivity and extraversion; however, effect sizes are small. Temporal discounting correlates negatively with future-oriented cognitive styles and inhibitory control, again with small effect sizes. There are consistent associations between steeper temporal discounting and lower intelligence, with effect sizes exceeding those of personality or cognitive variables, although socio-demographic moderator variables may play a role. Neuroimaging evidence of brain structural and functional correlates is not yet consistent, neither with regard to areas nor directions of effects. Finally, following early candidate gene studies, recent Genome Wide Association Study (GWAS) approaches have revealed the molecular genetic architecture of temporal discounting to be more complex than initially thought. Overall, the study of individual differences in temporal discounting is a maturing field that has produced some replicable findings. Effect sizes are small-to-medium, necessitating future hypothesis-driven work that prioritizes large samples with adequate power calculations. More research is also needed regarding the neural origins of individual differences in temporal discounting as well as the mediating neural mechanisms of associations of temporal discounting with personality and cognitive variables.
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Affiliation(s)
- Kristof Keidel
- Department of Psychology, University of Bonn, Bonn, Germany
- Department of Finance, The University of Melbourne, Melbourne, VIC, Australia
| | - Qëndresa Rramani
- Center for Economics and Neuroscience, University of Bonn, Bonn, Germany
- Institute of Experimental Epileptology and Cognition Research, University of Bonn, Bonn, Germany
| | - Bernd Weber
- Center for Economics and Neuroscience, University of Bonn, Bonn, Germany
- Institute of Experimental Epileptology and Cognition Research, University of Bonn, Bonn, Germany
| | - Carsten Murawski
- Department of Finance, The University of Melbourne, Melbourne, VIC, Australia
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Onland-Moret NC, Buizer-Voskamp JE, Albers MEWA, Brouwer RM, Buimer EEL, Hessels RS, de Heus R, Huijding J, Junge CMM, Mandl RCW, Pas P, Vink M, van der Wal JJM, Hulshoff Pol HE, Kemner C. The YOUth study: Rationale, design, and study procedures. Dev Cogn Neurosci 2020; 46:100868. [PMID: 33075722 PMCID: PMC7575850 DOI: 10.1016/j.dcn.2020.100868] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 12/16/2022] Open
Abstract
Behavioral development in children shows large inter-individual variation, and is driven by the interplay between biological, psychological, and environmental processes. However, there is still little insight into how these processes interact. The YOUth cohort specifically focuses on two core characteristics of behavioral development: social competence and self-regulation. Social competence refers to the ability to engage in meaningful interactions with others, whereas self-regulation is the ability to control one's emotions, behavior, and impulses, to balance between reactivity and control of the reaction, and to adjust to the prevailing environment. YOUth is an accelerated population-based longitudinal cohort study with repeated measurements, centering on two groups: YOUth Baby & Child and YOUth Child & Adolescent. YOUth Baby & Child aims to include 3,000 pregnant women, their partners and children, wheras YOUth Child & Adolescent aims to include 2,000 children aged between 8 and 10 years old and their parents. All participants will be followed for at least 6 years, and potentially longer. In this paper we describe in detail the design of this study, the population included, the determinants, intermediate neurocognitive measures and outcomes included in the study. Furthermore, we describe in detail the procedures of inclusion, informed consent, and study participation.
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Affiliation(s)
- N Charlotte Onland-Moret
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
| | | | - Maria E W A Albers
- Division of Woman and Baby, University Medical Center Utrecht, Utrecht University, the Netherlands; Division of Biomedical Genetics, University Medical Center Utrecht, Utrecht University, the Netherlands
| | - Rachel M Brouwer
- UMC Utrecht Brain Center, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Elizabeth E L Buimer
- UMC Utrecht Brain Center, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Roy S Hessels
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, the Netherlands; Developmental Psychology, Utrecht University, Utrecht, the Netherlands
| | - Roel de Heus
- Division of Woman and Baby, University Medical Center Utrecht, Utrecht University, the Netherlands
| | - Jorg Huijding
- Dept. Clinical Child and Family Studies, Social and Behavioral Sciences, Utrecht Univerity, Utrecht, the Netherlands
| | - Caroline M M Junge
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, the Netherlands; Developmental Psychology, Utrecht University, Utrecht, the Netherlands
| | - René C W Mandl
- UMC Utrecht Brain Center, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Pascal Pas
- UMC Utrecht Brain Center, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Matthijs Vink
- UMC Utrecht Brain Center, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands; Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, the Netherlands; Developmental Psychology, Utrecht University, Utrecht, the Netherlands
| | | | - Hilleke E Hulshoff Pol
- UMC Utrecht Brain Center, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Chantal Kemner
- UMC Utrecht Brain Center, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands; Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, the Netherlands; Developmental Psychology, Utrecht University, Utrecht, the Netherlands
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Steep Discounting of Future Rewards as an Impulsivity Phenotype: A Concise Review. Curr Top Behav Neurosci 2020; 47:113-138. [PMID: 32236897 DOI: 10.1007/7854_2020_128] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This chapter provides an overview over the behavioral economic index of impulsivity known as delay discounting. Specifically, delay discounting refers to an individual's preference for smaller immediate rewards over a larger delayed rewards. The more precipitously an individual discounts future rewards, the more impulsive they are considered to be. First, the chapter reviews the nature of delay discounting as a psychological process and juxtaposes it with nominally similar processes, including other facets of impulsivity. Second, the chapter reviews the links between delay discounting and numerous health behaviors, including addiction, attention deficit/hyperactivity disorder, and obesity. Third, the determinants of individual variation in delay discounting are discussed, including both genetic and environmental contributions. Finally, the chapter evaluates delay discounting as a potentially modifiable risk factor and the status of clinical interventions designed to reduce delay discounting to address deficits in self-control in a variety of maladaptive behaviors.
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12
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Kan C, Herle M, Treasure J, Jones A, Rijsdijk F, Llewellyn C. Common etiological architecture underlying reward responsiveness, externally driven eating behaviors, and BMI in childhood: findings from the Gemini twin cohort. Int J Obes (Lond) 2020; 44:2064-2074. [PMID: 32467612 PMCID: PMC7610375 DOI: 10.1038/s41366-020-0605-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 04/15/2020] [Accepted: 05/14/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND Studies have reported that impulsivity predicts childhood BMI and that the association is mediated by eating behaviors. One aspect of impulsivity-potentially crucial in the obesity context-is reward responsiveness, which may predispose to responsiveness to palatable food cues. The behavioral susceptibility theory hypothesizes that genetic susceptibility to obesity operates partly via genetically determined differences in appetite regulation. Reward responsiveness may therefore be one of the neuro-endophenotypes that mediates genetic susceptibility to obesity. OBJECTIVE To test whether reward responsiveness, eating behaviors, and child BMI share common genetic architecture. METHODS We examined reward responsiveness, eating behaviors, and BMI in 5-year-old children from Gemini, a UK birth cohort of 2402 twin pairs born in 2007. All measures were collected by parent report. Reward responsiveness was derived from the Behavioral Approach System. Compulsion to eat and eating for pleasure was measured with the "food responsiveness" scale of the Child Eating Behavior Questionnaire. Wanting to eat in response to environmental food cues was measured with the "external eating" scale of the Dutch Eating Behavior Questionnaire. Maximum-likelihood structural equation modeling was used to establish underlying common genetic and environmental influences. RESULTS There were significant positive phenotypic correlations between all traits except for reward responsiveness and BMI. Genetic factors explained the majority of the association between food responsiveness and external eating (74%, 95% CI: 61, 87), whereas common shared environmental factors explained the majority of the associations between reward responsiveness with both food responsiveness (55%, 95% CI: 20, 90) and external eating (70%, 95% CI: 39, 100). CONCLUSIONS Our study demonstrates the importance of common environmental factors in the shared etiology between reward responsiveness and childhood eating behaviors. However, the common etiology underlying both reward responsiveness and BMI is unclear, as there was no phenotypic correlation between reward responsiveness and BMI at this age. Further longitudinal research needs to detangle this complex relationship throughout development.
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Affiliation(s)
- Carol Kan
- Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.
| | - Moritz Herle
- Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Janet Treasure
- Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Andrew Jones
- Institute of Population Health Sciences, University of Liverpool, Liverpool, UK
| | - Frühling Rijsdijk
- Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Clare Llewellyn
- Research Department of Behavioral Science and Health, University College London, London, UK
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13
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Temple JL, Ziegler AM, Crandall AK, Mansouri T, Epstein LH. Sensitization of the reinforcing value of food: a novel risk factor for overweight in adolescents. Int J Obes (Lond) 2020; 44:1918-1927. [PMID: 32665612 PMCID: PMC7484379 DOI: 10.1038/s41366-020-0641-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 06/03/2020] [Accepted: 07/06/2020] [Indexed: 12/23/2022]
Abstract
Background and Objectives The relative reinforcing value (RRV) of food is associated with increased energy intake and obesity and increases in RRV of food after repeated intake (sensitization) are related cross-sectionally and prospectively to higher BMI in adults. We examined the factors, such as delay discounting (DD), associated with sensitization of RRV of high energy density (HED) and low energy density (LED) food and how sensitization relates to zBMI in adolescents. We hypothesized that sensitization to HED food would be positively associated with zBMI, that sensitization to LED food would be negatively associated with zBMI, that DD would be associated with HED sensitization, and that LED sensitization and DD would moderate the relationships between HED sensitization and zBMI. Subjects and Methods A population-based sample of 207 adolescents without obesity, aged 12 – 14 years was studied from June 2016 – March 2019. The RRV of LED and HED foods were measured before and after two weeks of daily consumption along with zBMI and other potential factors related to eating and weight, including dietary restraint, hunger, food liking, and delay discounting (DD). Hierarchical regression models were used to determine the associations between these factors and sensitization and zBMI. We also examined LED sensitization and DD as potential moderators of the relationship between sensitization and zBMI. Results As hypothesized, dietary restraint and sensitization to HED food were associated with greater zBMI. Contrary to our original hypotheses, DD was not associated with sensitization, there was no relationship between sensitization to LED food and zBMI and neither LED sensitization or DD moderated the relationship between HED sensitization and zBMI. Conclusions Sensitization to repeated intake of HED food was associated with higher zBMI in adolescents without obesity. Sensitization may be a novel behavioral phenotype that may relate to overweight in youth.
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Affiliation(s)
- Jennifer L Temple
- Departments of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY, 14214, USA. .,Community Health and Health Behavior, University at Buffalo, Buffalo, NY, 14214, USA. .,School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, USA.
| | - Amanda M Ziegler
- Departments of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY, 14214, USA.,Community Health and Health Behavior, University at Buffalo, Buffalo, NY, 14214, USA.,School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, USA
| | - Amanda K Crandall
- Community Health and Health Behavior, University at Buffalo, Buffalo, NY, 14214, USA.,School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, USA
| | - Tegan Mansouri
- Departments of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY, 14214, USA.,School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, USA
| | - Leonard H Epstein
- Department of Pediatrics, University at Buffalo, Buffalo, NY, 14214, USA.,The Jacobs School of Medicine, University at Buffalo, Buffalo, NY, 14214, USA
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14
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Protzko J. Kids These Days! Increasing delay of gratification ability over the past 50 years in children. INTELLIGENCE 2020. [DOI: 10.1016/j.intell.2020.101451] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Cassidy RN, Aston ER, Tidey JW, Colby SM. Behavioral economic demand and delay discounting are differentially associated with cigarette dependence and use in adolescents. Addict Behav 2020; 103:106225. [PMID: 31838441 PMCID: PMC6938733 DOI: 10.1016/j.addbeh.2019.106225] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 12/27/2022]
Abstract
INTRODUCTION The Reinforcer Pathology Model describes how two behavioral economic processes, increased sensitivity to immediate rewards (delay discounting) and excessive reward derived from a substance (demand), both contribute to problematic patterns of substance use. In a novel application of this model, the current cross-sectional study examined how these distinct processes relate to different facets of cigarette use in adolescents. METHODS Adolescent daily cigarette smokers ages 15 to 19 (Mean age 17.7, N = 50) completed a laboratory assessment of demand using a Cigarette Purchase Task for their usual brand cigarettes and an adjusting-amount delay discounting task. Demand was conceptualized as two factors (Amplitude and Persistence) and delay discounting was calculated as Area Under the Curve (log AUC). The two factors of demand and discounting AUC were included as statistical predictors of level of cigarette dependence and average number of cigarettes smoked per day in linear regression models. RESULTS Amplitude of demand was marginally significant predictor (p = .06) of cigarettes smoked per day whereas neither Persistence of demand nor delay discounting significantly predicted this outcome. Both Amplitude of demand and delay discounting, but not Persistence, were associated with level of cigarette dependence. The effects of amplitude of demand and delay discounting on cigarette dependence or use did not significantly interact. CONCLUSIONS Results of this study suggest that amplitude of cigarette demand may be a risk factor for both cigarette consumption and dependence, while discounting - a known risk factor for cigarette initiation - may relate specifically to level of dependence.
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Affiliation(s)
- Rachel N Cassidy
- Center for Alcohol and Addiction Studies, Brown University, United States.
| | - Elizabeth R Aston
- Center for Alcohol and Addiction Studies, Brown University, United States
| | - Jennifer W Tidey
- Center for Alcohol and Addiction Studies, Brown University, United States
| | - Suzanne M Colby
- Center for Alcohol and Addiction Studies, Brown University, United States
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16
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Odum AL, Becker RJ, Haynes JM, Galizio A, Frye CCJ, Downey H, Friedel JE, Perez DM. Delay discounting of different outcomes: Review and theory. J Exp Anal Behav 2020; 113:657-679. [PMID: 32147840 DOI: 10.1002/jeab.589] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 12/12/2019] [Accepted: 02/05/2020] [Indexed: 02/02/2023]
Abstract
Steep delay discounting is characterized by a preference for small immediate outcomes relative to larger delayed outcomes and is predictive of drug abuse, risky sexual behaviors, and other maladaptive behaviors. Nancy M. Petry was a pioneer in delay discounting research who demonstrated that people discount delayed monetary gains less steeply than they discount substances with abuse liability. Subsequent research found steep discounting for not only drugs, but other nonmonetary outcomes such as food, sex, and health. In this systematic review, we evaluate the hypotheses proposed to explain differences in discounting as a function of the type of outcome and explore the trait- and state-like nature of delay discounting. We found overwhelming evidence for the state-like quality of delay discounting: Consistent with Petry and others' work, nonmonetary outcomes are discounted more steeply than monetary outcomes. We propose two hypotheses that together may account for this effect: Decreasing Future Preference and Decreasing Future Worth. We also found clear evidence that delay discounting has trait-like qualities: People who steeply discount monetary outcomes steeply discount nonmonetary outcomes as well. The implication is that changing delay discounting for one outcome could change discounting for other outcomes.
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17
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Walshe EA, Winston FK, Betancourt LM, Khurana A, Arena K, Romer D. Working Memory Development and Motor Vehicle Crashes in Young Drivers. JAMA Netw Open 2019; 2:e1911421. [PMID: 31517969 PMCID: PMC6745049 DOI: 10.1001/jamanetworkopen.2019.11421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
IMPORTANCE Adolescent drivers have the highest rate of motor vehicle crashes, and among equally novice drivers, crash risk is inversely age graded. Working memory (WM), crucial to driving hazard awareness, is also age graded, with ongoing development into late adolescence. Variability in WM capacity and growth trajectory positions WM as a candidate crash risk factor for study, clinical screening, and possible preventative intervention. OBJECTIVE To test the association between crashes and differential WM development. DESIGN, SETTING, AND PARTICIPANTS This prospective cohort study used data from a longitudinal cohort of 118 community youth in Philadelphia, Pennsylvania. Working memory and other risk factors were measured annually from age 11 to 13 years (prelicensure, in 2005) to 14 to 16 years (in 2009), and again at 18 to 20 years (in 2013). In 2015, a follow-up survey of driving experience identified 84 participants who had started driving. Latent growth curve modeling was used to examine the association between variability in the baseline (intercept) and developmental trajectory (slope) of WM and the crash outcome. MAIN OUTCOMES AND MEASURES Self-reported crashes were the primary outcome. Variability in the relative growth of WM development along with traits and behaviors associated with risky driving were assessed. RESULTS Of 84 participants (39 [46%] male; mean [SD] age, 20.46 [1.09] years), 25 (29.8%) reported they had been involved in at least 1 crash. Controlling for other crash risk factors, the model indicated that variation in the linear slope of WM growth was inversely associated with reporting a crash (b = -6.41; SE = 2.64; P = .02). Crashes were also associated with reckless driving behavior (b = 0.40; SE = 0.18; P = .03). Variation in the intercept of WM was not associated with crashes (b = -0.245; SE = 0.67; P = .72). CONCLUSIONS AND RELEVANCE The results suggest that a relatively slower WM growth trajectory is associated with young driver crashes. Routine assessment of WM across adolescence may help to identify at-risk teen drivers and opportunities for providing adaptive interventions (eg, driving aids or training) that can address limitations in WM-related skills that are critical for safe driving.
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Affiliation(s)
- Elizabeth A. Walshe
- The Annenberg Public Policy Center at the University of Pennsylvania, Philadelphia
- The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Flaura K. Winston
- The Annenberg Public Policy Center at the University of Pennsylvania, Philadelphia
- The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | | | | | - Kristin Arena
- The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Daniel Romer
- The Annenberg Public Policy Center at the University of Pennsylvania, Philadelphia
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18
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Mitchell SH. Linking Delay Discounting and Substance Use Disorders: Genotypes and Phenotypes. Perspect Behav Sci 2019; 42:419-432. [PMID: 31976442 PMCID: PMC6768927 DOI: 10.1007/s40614-019-00218-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Research supports the idea that "delay discounting," also known as temporal discounting, intertemporal choice, or impulsive choice, is a transdisease process with a strong connection to substance use disorders (SUDs) and other psychopathologies, like attention deficit hyperactivity disorder and depression. This article briefly reviews the evidence used to conclude that delay discounting is heritable and should be considered to be an endophenotype, as well as evidence of its behavioral and genetic associations with SUDs. It also discusses the limitations that should be considered when evaluating the strength of these associations. Finally, this article briefly describes research examining relationships among delay discounting and SUD-associated intermediate phenotypes to better understand the conceptual relationships underlying the links between SUDs and delay discounting, and identifies research gaps that should be addressed.
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Affiliation(s)
- Suzanne H. Mitchell
- Behavioral Neuroscience, Psychiatry, the Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239 USA
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19
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Abram SV, Redish AD, MacDonald AW. Learning From Loss After Risk: Dissociating Reward Pursuit and Reward Valuation in a Naturalistic Foraging Task. Front Psychiatry 2019; 10:359. [PMID: 31231252 PMCID: PMC6561235 DOI: 10.3389/fpsyt.2019.00359] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 05/08/2019] [Indexed: 11/13/2022] Open
Abstract
A fundamental feature of addiction is continued use despite high-cost losses. One possible driver of this feature is a dissociation between reward pursuit and reward valuation. To test for this dissociation, we employed a foraging paradigm with real-time delays and video rewards. Subjects made stay/skip choices on risky and non-risky offers; risky losses were operationalized as receipt of the longer delay after accepting a risky deal. We found that reward likability following risky losses predicted reward pursuit (i.e., subsequent choices), while there was no effect on reward valuation or reward pursuit in the absence of such losses. Individuals with high trait externalizing, who may be vulnerable to addiction, showed a dissociation between these phenomena: they liked videos more after risky losses but showed no decrease in choosing to stay on subsequent risky offers. This suggests that the inability to learn from mistakes is a potential component of risk for addiction.
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Affiliation(s)
- Samantha V. Abram
- Department of Psychology, University of Minnesota Twin Cities, Minneapolis, MN, United States
- Sierra Pacific Mental Illness Research Education and Clinical Centers, San Francisco VA Medical Center, and the University of California, San Francisco, San Francisco, CA, United States
| | - A. David Redish
- Department of Neuroscience, University of Minnesota Twin Cities, Minneapolis, MN, United States
| | - Angus W. MacDonald
- Department of Psychology, University of Minnesota Twin Cities, Minneapolis, MN, United States
- Department of Psychiatry, University of Minnesota Twin Cities, Minneapolis, MN, United States
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20
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Genomic basis of delayed reward discounting. Behav Processes 2019; 162:157-161. [PMID: 30876880 DOI: 10.1016/j.beproc.2019.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 03/04/2019] [Accepted: 03/09/2019] [Indexed: 02/07/2023]
Abstract
Delayed reward discounting (DRD) is a behavioral economic measure of impulsivity, reflecting how rapidly a reward loses value based on its temporal distance. In humans, more impulsive DRD is associated with susceptibility to a number of psychiatric diseases (e.g., addiction, ADHD), health outcomes (e.g., obesity), and lifetime outcomes (e.g., educational attainment). Although the determinants of DRD are both genetic and environmental, this review focuses on its genetic basis. Both rodent studies using inbred strains and human twin studies indicate that DRD is moderately heritable, a conclusion that was further supported by a recent human genome-wide association study (GWAS) that used single nucleotide polymorphisms (SNP) to estimate heritability. The GWAS of DRD also identified genetic correlations with psychiatric diagnoses, health outcomes, and measures of cognitive performance. Future research priorities include rodent studies probing putative genetic mechanisms of DRD and human GWASs using larger samples and non-European cohorts. Continuing to characterize genomic influences on DRD has the potential to yield important biological insights with implications for a variety of medically and socially important outcomes.
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21
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Lopez-Guzman S, Konova AB, Glimcher PW. Computational psychiatry of impulsivity and risk: how risk and time preferences interact in health and disease. Philos Trans R Soc Lond B Biol Sci 2019; 374:20180135. [PMID: 30966919 PMCID: PMC6335456 DOI: 10.1098/rstb.2018.0135] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2018] [Indexed: 12/11/2022] Open
Abstract
Choice impulsivity is an important subcomponent of the broader construct of impulsivity and is a key feature of many psychiatric disorders. Choice impulsivity is typically quantified as temporal discounting, a well-documented phenomenon in which a reward's subjective value diminishes as the delay to its delivery is increased. However, an individual's proclivity to-or more commonly aversion to- risk can influence nearly all of the standard experimental tools available for measuring temporal discounting. Despite this interaction, risk preference is a behaviourally and neurobiologically distinct construct that relates to the economic notion of utility or subjective value. In this opinion piece, we discuss the mathematical relationship between risk preferences and time preferences, their neural implementation, and propose ways that research in psychiatry could, and perhaps should, aim to account for this relationship experimentally to better understand choice impulsivity and its clinical implications. This article is part of the theme issue 'Risk taking and impulsive behaviour: fundamental discoveries, theoretical perspectives and clinical implications'.
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Affiliation(s)
- Silvia Lopez-Guzman
- Center for Neural Science, New York University, New York, NY 10003, USA
- Grupo de Investigación en Neurociencias (NeURos), Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111221, Colombia
| | - Anna B. Konova
- Center for Neural Science, New York University, New York, NY 10003, USA
- Department of Psychiatry, University Behavioral Health Care (UBHC), and the Brain Health Institute, Rutgers University-New Brunswick, Piscataway, NJ 08854, USA
| | - Paul W. Glimcher
- Center for Neural Science, New York University, New York, NY 10003, USA
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22
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MacKillop J, Gray JC, Weafer J, Sanchez-Roige S, Palmer AA, de Wit H. Genetic influences on delayed reward discounting: A genome-wide prioritized subset approach. Exp Clin Psychopharmacol 2019; 27:29-37. [PMID: 30265060 PMCID: PMC6908809 DOI: 10.1037/pha0000227] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Delayed reward discounting (DRD) is a behavioral economic measure of impulsivity that has been consistently associated with addiction. It has also been identified as a promising addiction endophenotype, linking specific sources of genetic variation to individual risk. A challenge in the studies to date is that levels of DRD are often confounded with prior drug use, and previous studies have also had limited genomic scope. The current investigation sought to address these issues by studying DRD in healthy young adults with low levels of substance use (N = 986; 62% female, 100% European ancestry) and investigating genetic variation genome-wide. The genome-wide approach used a prioritized subset design, organizing the tests into theoretically and empirically informed categories and apportioning power accordingly. Three subsets were used: (a) a priori loci implicated by previous studies; (b) high-value addiction (HVA) markers from the recently developed SmokeScreen array; and (c) an atheoretical genome-wide scan. Among a priori loci, a nominally significant association was present between DRD and rs521674 in ADRA2A. No significant HVA loci were detected. One statistically significant genome-wide association was detected (rs13395777, p = 2.8 × 10-8), albeit in an intergenic region of unknown function. These findings are generally not supportive of the previous candidate gene studies and suggest that DRD has a complex genetic architecture that will require considerably larger samples to identify genetic associations more definitively. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
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Affiliation(s)
- James MacKillop
- Peter Boris Centre for Addictions Research, McMaster University/St. Joseph’s Healthcare Hamilton, Hamilton, ON L8P 3R2, Canada,Homewood Research Institute, Homewood Health Centre, Guelph, ON N1E 4J3 Canada
| | - Joshua C. Gray
- Department of Psychology, University of Georgia Athens, GA 30602, USA,Department of Psychiatry and Human Behavior, Brown University, Providence, RI 02912
| | - Jessica Weafer
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, IL 60637, USA
| | - Sandra Sanchez-Roige
- Department of Psychiatry, University of California, San Diego, San Diego, CA 92093, USA
| | - Abraham A. Palmer
- Department of Psychiatry, University of California, San Diego, San Diego, CA 92093, USA,Institute for Genomic Medicine, University of California San Diego, La Jolla, CA 92103, USA
| | - Harriet de Wit
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, IL 60637, USA
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23
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Rung JM, Madden GJ. Experimental reductions of delay discounting and impulsive choice: A systematic review and meta-analysis. J Exp Psychol Gen 2018; 147:1349-1381. [PMID: 30148386 DOI: 10.1037/xge0000462] [Citation(s) in RCA: 176] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Many behaviors posing significant risks to public health are characterized by repeated decisions to forego better long-term outcomes in the face of immediate temptations. Steeply discounting the value of delayed outcomes often underlies a pattern of impulsive choice. Steep delay discounting is correlated with addictions (e.g., substance abuse, obesity) and behaviors such as seatbelt use and risky sexual activity. As evidence accumulates suggesting steep delay discounting plays a causal role in these maladaptive behaviors, researchers have begun testing methods for reducing discounting. In this first systematic and comprehensive review of this literature, the findings of 92 articles employing different methodologies to reduce discounting are evaluated narratively and meta-analytically. Although most of the methods reviewed produced significant reductions in discounting, they varied in effect sizes. Most methods were ideal for influencing one-off choices (e.g., framing and priming manipulations), although other successful manipulations, such as episodic future thinking, could be incorporated into existing therapies designed to produce longer-lasting changes in decision-making. The largest and longest-lasting effects were produced by learning-based manipulations, although translational research is needed to determine the generality and clinical utility of these methods. Methodological shortcomings in the existing literature and suggestions for ameliorating these issues are discussed. This review reveals a variety of methods with translational potential, which, through continued refinement, may prove effective in reducing impulsive choice and its associated maladaptive decisions that negatively impact quality of life. (PsycINFO Database Record
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24
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Fernández-Artamendi S, Martínez-Loredo V, Grande-Gosende A, Simpson IC, Fernández-Hermida JR. What Predicts What? Self-Reported and Behavioral Impulsivity and High-Risk Patterns of Alcohol Use in Spanish Early Adolescents: A 2-Year Longitudinal Study. Alcohol Clin Exp Res 2018; 42:2022-2032. [DOI: 10.1111/acer.13852] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 07/25/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Sergio Fernández-Artamendi
- Department of Psychology; Universidad Loyola Andalucía; Sevilla Andalucía Spain
- Department of Psychology; Addictive Behaviors Research Group; Universidad de Oviedo; Oviedo Asturias Spain
| | - Víctor Martínez-Loredo
- Department of Psychology; Addictive Behaviors Research Group; Universidad de Oviedo; Oviedo Asturias Spain
| | - Aris Grande-Gosende
- Department of Psychology; Addictive Behaviors Research Group; Universidad de Oviedo; Oviedo Asturias Spain
| | - Ian C. Simpson
- Department of Psychology; Universidad Loyola Andalucía; Sevilla Andalucía Spain
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25
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The utility of twins in developmental cognitive neuroscience research: How twins strengthen the ABCD research design. Dev Cogn Neurosci 2017; 32:30-42. [PMID: 29107609 PMCID: PMC5847422 DOI: 10.1016/j.dcn.2017.09.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/31/2017] [Accepted: 09/05/2017] [Indexed: 02/01/2023] Open
Abstract
The ABCD twin study will elucidate the genetic and environmental contributions to a wide range of mental and physical health outcomes in children, including substance use, brain and behavioral development, and their interrelationship. Comparisons within and between monozygotic and dizygotic twin pairs, further powered by multiple assessments, provide information about genetic and environmental contributions to developmental associations, and enable stronger tests of causal hypotheses, than do comparisons involving unrelated children. Thus a sub-study of 800 pairs of same-sex twins was embedded within the overall Adolescent Brain and Cognitive Development (ABCD) design. The ABCD Twin Hub comprises four leading centers for twin research in Minnesota, Colorado, Virginia, and Missouri. Each site is enrolling 200 twin pairs, as well as singletons. The twins are recruited from registries of all twin births in each State during 2006-2008. Singletons at each site are recruited following the same school-based procedures as the rest of the ABCD study. This paper describes the background and rationale for the ABCD twin study, the ascertainment of twin pairs and implementation strategy at each site, and the details of the proposed analytic strategies to quantify genetic and environmental influences and test hypotheses critical to the aims of the ABCD study.
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26
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Age and impulsive behavior in drug addiction: A review of past research and future directions. Pharmacol Biochem Behav 2017; 164:106-117. [PMID: 28778737 DOI: 10.1016/j.pbb.2017.07.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 07/10/2017] [Accepted: 07/31/2017] [Indexed: 11/20/2022]
Abstract
Impulsive behavior is implicated in the initiation, maintenance, and relapse of drug-seeking behaviors involved in drug addiction. Research shows that changes in impulsive behavior across the lifespan contribute to drug use and addiction. The goal of this review is to examine existing research on the relationship between impulsive behavior and drug use across the lifespan and to recommend directions for future research. Three domains of impulsive behavior are explored in this review: impulsive behavior-related personality traits, delay discounting, and prepotent response inhibition. First, we present previous research on these three domains of impulsive behavior and drug use across developmental stages. Then, we discuss how changes in impulsive behavior across the lifespan are implicated in the progression of drug use and addiction. Finally, we discuss the relatively limited attention given to middle-to-older adults in the current literature, consider the validity of the measures used to assess impulsive behavior in middle-to-older adulthood, and suggest recommendations for future research.
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27
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Scott JC, Wolf DH, Calkins ME, Bach EC, Weidner J, Ruparel K, Moore TM, Jones JD, Jackson CT, Gur RE, Gur RC. Cognitive functioning of adolescent and young adult cannabis users in the Philadelphia Neurodevelopmental Cohort. PSYCHOLOGY OF ADDICTIVE BEHAVIORS 2017; 31:423-434. [PMID: 28414475 DOI: 10.1037/adb0000268] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cannabis use in youth is rising and has been linked to deficits in cognitive functioning. However, cognitive findings have primarily been based on small samples of users seeking treatment, and few studies have evaluated cognition in occasional cannabis users. Here, we examined 4,568 adolescents and young adults (ages 14-21 years) drawn from the Philadelphia Neurodevelopmental Cohort, a prospective, population-based study. Participants were classified as cannabis Non-Users (n = 3,401), Occasional Users (twice per week or less; n = 940), or Frequent Users (>3 times per week; n = 227). Mixed-model analyses examined main effects of cannabis use and interactions between age and cannabis use on cognitive functioning. There was a significant interaction between cannabis group and age such that adolescent (but not young adult) Frequent Users performed worse than Non-Users on measures of executive control (p = .002). Earlier age of cannabis use was associated with worse performance in executive control in Occasional Users (p = .04). Unexpectedly, Occasional Users exhibited better executive control, memory, and social cognition than Non-Users (ps < .05). Although mild executive control deficits in adolescent frequent users and a relation between early cannabis initiation and cognitive performance are partially consistent with prior research, cognitive deficits were not found in other hypothesized domains in this community-based sample. Moreover, occasional cannabis users displayed equivalent or even slightly better executive control, social-cognitive, and memory abilities compared with nonusers, suggesting complex relationships between cannabis use and cognition in youth. Longitudinal studies with community samples are needed to identify variables affecting risk and resilience to cognitive deficits associated with cannabis. (PsycINFO Database Record
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Affiliation(s)
- J Cobb Scott
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Daniel H Wolf
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Monica E Calkins
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Emily C Bach
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Jennifer Weidner
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Kosha Ruparel
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Tyler M Moore
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Jason D Jones
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Chad T Jackson
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Raquel E Gur
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
| | - Ruben C Gur
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania
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Bulley A, Gullo MJ. The influence of episodic foresight on delay discounting and demand for alcohol. Addict Behav 2017; 66:1-6. [PMID: 27837662 DOI: 10.1016/j.addbeh.2016.11.003] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 09/13/2016] [Accepted: 11/01/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND There is a near-universal tendency to discount the value of delayed rewards relative to those available in the here and now. The rate at which future rewards become devalued over time, delay discounting, is an important individual difference variable related to impulsivity and is elevated in externalising disorders, including alcohol use disorders. Recent research suggests that vividly imagining personally relevant future events (episodic foresight) during an intertemporal choice task can attenuate the rate at which delayed rewards are discounted. OBJECTIVES The present study sought to extend these findings by examining the effect of episodic foresight on both delay discounting and alcohol-related decision-making. METHODS Forty-eight college students were administered both modified intertemporal choice and hypothetical alcohol purchase tasks during which personally relevant episodic future event cues or control imagery cues were presented. RESULTS Engaging in episodic foresight reduced both the rate at which delayed monetary rewards were discounted and initial alcohol demand intensity (but not other demand indices) relative to control imagery. CONCLUSIONS Findings suggest that the attenuating effect of episodic foresight on impulsivity may be limited to particular aspects of impulsive choice.
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29
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Sullivan EV, Brumback T, Tapert SF, Fama R, Prouty D, Brown SA, Cummins K, Thompson WK, Colrain IM, Baker FC, De Bellis MD, Hooper SR, Clark DB, Chung T, Nagel BJ, Nichols BN, Rohlfing T, Chu W, Pohl KM, Pfefferbaum A. Cognitive, emotion control, and motor performance of adolescents in the NCANDA study: Contributions from alcohol consumption, age, sex, ethnicity, and family history of addiction. Neuropsychology 2016; 30:449-73. [PMID: 26752122 DOI: 10.1037/neu0000259] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE To investigate development of cognitive and motor functions in healthy adolescents and to explore whether hazardous drinking affects the normal developmental course of those functions. METHOD Participants were 831 adolescents recruited across 5 United States sites of the National Consortium on Alcohol and NeuroDevelopment in Adolescence 692 met criteria for no/low alcohol exposure, and 139 exceeded drinking thresholds. Cross-sectional, baseline data were collected with computerized and traditional neuropsychological tests assessing 8 functional domains expressed as composite scores. General additive modeling evaluated factors potentially modulating performance (age, sex, ethnicity, socioeconomic status, and pubertal developmental stage). RESULTS Older no/low-drinking participants achieved better scores than younger ones on 5 accuracy composites (general ability, abstraction, attention, emotion, and balance). Speeded responses for attention, motor speed, and general ability were sensitive to age and pubertal development. The exceeds-threshold group (accounting for age, sex, and other demographic factors) performed significantly below the no/low-drinking group on balance accuracy and on general ability, attention, episodic memory, emotion, and motor speed scores and showed evidence for faster speed at the expense of accuracy. Delay Discounting performance was consistent with poor impulse control in the younger no/low drinkers and in exceeds-threshold drinkers regardless of age. CONCLUSIONS Higher achievement with older age and pubertal stage in general ability, abstraction, attention, emotion, and balance suggests continued functional development through adolescence, possibly supported by concurrently maturing frontal, limbic, and cerebellar brain systems. Determination of whether low scores by the exceeds-threshold group resulted from drinking or from other preexisting factors requires longitudinal study. (PsycINFO Database Record
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Affiliation(s)
- Edith V Sullivan
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine
| | - Ty Brumback
- Department of Psychiatry, University of California, San Diego
| | - Susan F Tapert
- Psychology Service, Veterans Affairs San Diego Healthcare System
| | - Rosemary Fama
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine
| | | | - Sandra A Brown
- Department of Psychiatry, University of California, San Diego
| | - Kevin Cummins
- Department of Psychiatry, University of California, San Diego
| | | | | | | | - Michael D De Bellis
- Healthy Childhood Brain Development Research Program, Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine
| | - Stephen R Hooper
- Department of Allied Health Sciences, University of North Carolina School of Medicine
| | | | - Tammy Chung
- Department of Psychiatry, University of Pittsburgh
| | - Bonnie J Nagel
- Departments of Psychiatry and Behavioral Neuroscience, Oregon Health and Sciences University
| | - B Nolan Nichols
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine
| | | | | | - Kilian M Pohl
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine
| | - Adolf Pfefferbaum
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine
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MacKillop J, Gray JC, Bidwell LC, Bickel WK, Sheffer CE, McGeary JE. Genetic influences on delay discounting in smokers: examination of a priori candidates and exploration of dopamine-related haplotypes. Psychopharmacology (Berl) 2015; 232. [PMID: 26220612 PMCID: PMC4845660 DOI: 10.1007/s00213-015-4029-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
RATIONALE Delay discounting is a behavioral economic index of impulsivity that reflects a person's relative preference for small immediate rewards versus larger delayed rewards. Elevated delay discounting is robustly linked to addictive disorders and has been increasingly investigated as a viable endophenotype for genetic influences on addiction. OBJECTIVE The aim of this study is to examine associations between delay discounting and two a priori loci, rs4680 in COMT and rs1800497 in ANKK1, and three exploratory haplotypes proximal to rs1800497 in a sample of daily smokers. METHODS Participants were 713 (60.2 % male) daily smokers of European ancestry who completed a delay discounting assessment and provided a DNA sample. RESULTS Significant associations were detected between greater discounting of medium magnitude rewards (~$55) and the G allele of rs4680, as well as the T allele of rs1800497. Exploratory haplotype analyses identified two haplotypes (rs1160467/rs1800497; rs6277/rs1079597) significantly associated with delay discounting rates. However, the rs1160467/rs1800497 haplotype associations appeared to be entirely attributable to variation in rs1800497, suggesting that the association of rs1800497 with discounting is best understood at the individual SNP level. Similarly, the rs6277/rs1079597 haplotype findings suggested that the association was specific to rs1079597. CONCLUSIONS This study provides further evidence that rs4680 and rs1800497 genotypes are significantly associated with delay discounting preferences and does so among smokers for the first time. The study also provides evidence of specificity for the rs1800497 association and identifies a novel locus, rs1079597, as a genetic contributor to higher delay discounting rates.
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Affiliation(s)
- James MacKillop
- Peter Boris Centre for Addictions Research, Department of Psychiatry and Behavioural Neurosciences, McMaster University/St. Joseph's Healthcare Hamilton, Hamilton, ON, Canada,
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Gray JC, MacKillop J. Impulsive delayed reward discounting as a genetically-influenced target for drug abuse prevention: a critical evaluation. Front Psychol 2015; 6:1104. [PMID: 26388788 PMCID: PMC4554956 DOI: 10.3389/fpsyg.2015.01104] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 07/17/2015] [Indexed: 12/22/2022] Open
Abstract
This review evaluates the viability of delayed reward discounting (DRD), an index of how much an individual devalues a future reward based on its delay in time, for genetically-informed drug abuse prevention. A review of the literature suggests that impulsive DRD is robustly associated with drug addiction and meets most of the criteria for being an endophenotype, albeit with mixed findings for specific molecular genetic influences. Several modes of experimental manipulation have been demonstrated to reduce DRD acutely. These include behavioral strategies, such as mindfulness, reward bundling, and episodic future thinking; pharmacological interventions, including noradrenergic agonists, adrenergic agonists, and multiple monoamine agonists; and neuromodulatory interventions, such as transcranial magnetic stimulation and transcranial direct current stimulation. However, the generalization of these interventions to positive clinical outcomes remains unclear and no studies to date have examined interventions on DRD in the context of prevention. Collectively, these findings suggest it would be premature to target DRD for genetically-informed prevention. Indeed, given the evidence of environmental contributions to impulsive DRD, whether genetically-informed secondary prevention would ever be warranted is debatable. Progress in identifying polymorphisms associated with DRD profiles could further clarify the underlying biological systems for pharmacological and neuromodulatory interventions, and, as a qualitatively different risk factor from existing prevention programs, impulsive DRD is worthy of investigation at a more general level as a novel and promising drug abuse prevention target.
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Affiliation(s)
- Joshua C Gray
- Department of Psychology, University of Georgia , Athens, GA, USA
| | - James MacKillop
- Department of Psychology, University of Georgia , Athens, GA, USA ; Peter Boris Centre for Addictions Research, McMaster University/St. Joseph's Healthcare Hamilton , Hamilton, ON, Canada
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Lopez AA, Skelly JM, White TJ, Higgins ST. Does impulsiveness moderate response to financial incentives for smoking cessation among pregnant and newly postpartum women? Exp Clin Psychopharmacol 2015; 23:97-108. [PMID: 25730417 PMCID: PMC4388785 DOI: 10.1037/a0038810] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We examined whether impulsiveness moderates response to financial incentives for cessation among pregnant smokers. Participants were randomized to receive financial incentives delivered contingent on smoking abstinence or to a control condition wherein incentives were delivered independent of smoking status. The study was conducted in two steps: First, we examined associations between baseline impulsiveness and abstinence at late pregnancy and 24-weeks-postpartum as part of a planned prospective study of this topic using data from a recently completed, randomized controlled clinical trial (N = 118). Next, to increase statistical power, we conducted a second analysis collapsing results across that recent trial and two prior trials involving the same study conditions (N = 236). Impulsivity was assessed using a delay discounting (DD) of hypothetical monetary rewards task in all three trials and Barratt Impulsiveness Scale (BIS) in the most recent trial. Neither DD nor BIS predicted smoking status in the single or combined trials. Receiving abstinence-contingent incentives, lower baseline smoking rate, and a history of quit attempts prepregnancy predicted greater odds of antepartum abstinence across the single and combined trials. No variable predicted postpartum abstinence across the single and combined trials, although a history of antepartum quit attempts and receiving abstinence-contingent incentives predicted in the single and combined trials, respectively. Overall, this study provides no evidence that impulsiveness as assessed by DD or BIS moderates response to this treatment approach while underscoring a substantial association of smoking rate and prior quit attempts with abstinence across the contingent incentives and control treatment conditions.
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Affiliation(s)
- Alexa A. Lopez
- Vermont Center on Behavior & Health, University of Vermont,Department of Psychiatry, University of Vermont,Department of Psychology, University of Vermont
| | - Joan M. Skelly
- Department of Medical Biostatistics, University of Vermont
| | - Thomas J. White
- Vermont Center on Behavior & Health, University of Vermont,Department of Psychiatry, University of Vermont
| | - Stephen T. Higgins
- Vermont Center on Behavior & Health, University of Vermont,Department of Psychiatry, University of Vermont,Department of Psychology, University of Vermont
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