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Huang Y, Luan S, Wu B, Li Y, Wu J, Chen W, Hertwig R. Impulsivity is a stable, measurable, and predictive psychological trait. Proc Natl Acad Sci U S A 2024; 121:e2321758121. [PMID: 38830093 PMCID: PMC11181114 DOI: 10.1073/pnas.2321758121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 04/12/2024] [Indexed: 06/05/2024] Open
Abstract
Impulsivity is a personality construct frequently employed to explain and predict important human behaviors. Major inconsistencies in its definition and measurement, however, have led some researchers to call for an outright rejection of impulsivity as a psychological construct. We address this highly unsatisfactory state with a large-scale, preregistered study (N = 1,676) in which each participant completed 48 measures of impulsivity derived from 10 self-report scales and 10 behavioral tasks and reported frequencies of seven impulsivity-related behaviors (e.g., impulsive buying and social media usage); a subsample (N = 196) then completed a retest session 3 mo later. We found that correlations between self-report measures were substantially higher than those between behavioral tasks and between self-report measures and behavioral tasks. Bifactor analysis of these measures exacted one general factor of impulsivity I, akin to the general intelligence factor g, and six specific factors. Factor I was related mainly to self-report measures, had high test-retest reliability, and could predict impulsivity-related behaviors better than existing measures. We further developed a scale named the adjustable impulsivity scale (AIMS) to measure I. AIMS possesses excellent psychometric properties that are largely retained in shorter versions and could predict impulsivity-related behaviors equally well as I. These findings collectively support impulsivity as a stable, measurable, and predictive trait, indicating that it may be too early to reject it as a valid and useful psychological construct. The bifactorial structure of impulsivity and AIMS, meanwhile, significantly advance the conceptualization and measurement of construct impulsivity.
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Affiliation(s)
- Yuqi Huang
- Key Laboratory for Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing100101, China
- Department of Psychology, University of the Chinese Academy of Sciences, Beijing101408, China
| | - Shenghua Luan
- Key Laboratory for Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing100101, China
- Department of Psychology, University of the Chinese Academy of Sciences, Beijing101408, China
| | - Baizhou Wu
- Key Laboratory for Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing100101, China
- Department of Psychology, University of the Chinese Academy of Sciences, Beijing101408, China
| | - Yugang Li
- Key Laboratory for Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing100101, China
- Department of Psychology, University of the Chinese Academy of Sciences, Beijing101408, China
| | - Junhui Wu
- Key Laboratory for Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing100101, China
- Department of Psychology, University of the Chinese Academy of Sciences, Beijing101408, China
| | - Wenfeng Chen
- Department of Psychology, Renmin University of China, Beijing100872, China
| | - Ralph Hertwig
- Center for Adaptive Rationality, Max Planck Institute for Human Development, Berlin14195, Germany
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Baker C, Fairclough S, Ogden RS, Barnes R, Tootill J. Trait impulsivity influences behavioural and physiological responses to threat in a virtual environment. Sci Rep 2024; 14:9484. [PMID: 38664505 PMCID: PMC11045749 DOI: 10.1038/s41598-024-60300-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 04/21/2024] [Indexed: 04/28/2024] Open
Abstract
Trait impulsivity represents a tendency to take action without forethought or consideration of consequences. This trait is multifaceted and can be decomposed into attentional, motor and non-planning subtypes of impulsivity. The purpose of the current study was to investigate how subtypes of trait impulsivity responded to different degrees of threat within room-scale virtual reality (VR) with respect to behaviour and level of physiological activation. Thirty-four participants were required to negotiate a virtual environment (VE) where they walked at height with the continuous threat of a virtual 'fall.' Behavioural measures related to the speed of movement, interaction frequency and risk were collected. Participants also wore ambulatory sensors to collect data from electrocardiogram (ECG) and electrodermal activity (EDA). Our results indicated that participants who scored highly on non-planning impulsivity exhibited riskier behaviour and higher skin conductance level (SCL). Participants with higher motor impulsivity interacted with more objects in the VE when threat was high, they also exhibited contradictory indicators of physiological activation. Attentional impulsivity was associated with a greater number of falls across the VE. The results demonstrate that subtypes of trait impulsivity respond to threats via different patterns of behaviour and levels of physiological activation, reinforcing the multifaceted nature of the trait.
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Affiliation(s)
- Christopher Baker
- School of Computer Science & Mathematics, Liverpool John Moores University, Liverpool, UK.
| | | | - Ruth S Ogden
- School of Psychology, Liverpool John Moores University, Liverpool, UK
| | - Rachel Barnes
- School of Psychology, Liverpool John Moores University, Liverpool, UK
| | - Jessica Tootill
- School of Psychology, Liverpool John Moores University, Liverpool, UK
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3
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Lee SH, Song MS, Oh MH, Ahn WY. Bridging the Gap Between Self-Report and Behavioral Laboratory Measures: A Real-Time Driving Task With Inverse Reinforcement Learning. Psychol Sci 2024; 35:345-357. [PMID: 38407962 DOI: 10.1177/09567976241228503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Abstract
A major challenge in assessing psychological constructs such as impulsivity is the weak correlation between self-report and behavioral task measures that are supposed to assess the same construct. To address this issue, we developed a real-time driving task called the "highway task," in which participants often exhibit impulsive behaviors mirroring real-life impulsive traits captured by self-report questionnaires. Here, we show that a self-report measure of impulsivity is highly correlated with performance in the highway task but not with traditional behavioral task measures of impulsivity (47 adults aged 18-33 years). By integrating deep neural networks with an inverse reinforcement learning (IRL) algorithm, we inferred dynamic changes of subjective rewards during the highway task. The results indicated that impulsive participants attribute high subjective rewards to irrational or risky situations. Overall, our results suggest that using real-time tasks combined with IRL can help reconcile the discrepancy between self-report and behavioral task measures of psychological constructs.
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Affiliation(s)
- Sang Ho Lee
- Department of Psychology, Seoul National University
- Department of Brain and Cognitive Sciences, Seoul National University
| | | | - Min-Hwan Oh
- Graduate School of Data Science, Seoul National University
| | - Woo-Young Ahn
- Department of Psychology, Seoul National University
- Department of Brain and Cognitive Sciences, Seoul National University
- AI Institute, Seoul National University
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Tiego J, Verdejo-Garcia A, Anderson A, Koutoulogenis J, Bellgrove MA. Mechanisms of cognitive disinhibition explain individual differences in adult attention deficit hyperactivity disorder traits. Cortex 2023; 167:178-196. [PMID: 37567053 DOI: 10.1016/j.cortex.2023.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/12/2023] [Accepted: 06/08/2023] [Indexed: 08/13/2023]
Abstract
BACKGROUND Attention deficit hyperactivity disorder (ADHD) in adults is strongly associated with psychiatric comorbidity and functional impairment. Here, we aimed to use a newly developed online cognitive battery with strong psychometric properties for measuring individual differences in three cognitive mechanisms proposed to underlie ADHD traits in adults: 1) attentional control - the ability to mobilize cognitive resources to stop a prepotent motor response; 2) information sampling/gathering - adequate sampling of information in a stimulus detection task prior to making a decision; and 3) shifting - the ability to adapt behavior in response to positive and negative contingencies. METHODS This cross-sectional and correlational study recruited 650 adults (330 males) aged 18-69 years (M = 33.06; MD = 31.00; SD = 10.50), with previously diagnosed ADHD (n = 329) and those from the general community without a history of ADHD (n = 321). Self-report measures of ADHD traits (i.e., inattention/disorganization, impulsivity, hyperactivity) and the cognitive battery were completed online. RESULTS Latent class analysis, exploratory structural equation modeling and factor mixture modeling revealed self-reported ADHD traits formed a unidimensional and approximately normally distributed phenotype. Bayesian structural equation modeling demonstrated that all three mechanisms measured by the cognitive battery, explained unique, incremental variance in ADHD traits, with a total of 15.9% explained in the ADHD trait factor. CONCLUSIONS Attentional control and shifting, as well as the less researched cognitive process of information gathering, explain individual difference variance in self-reported ADHD traits with potential to yield genetic and neurobiological insights into adult ADHD.
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Affiliation(s)
- Jeggan Tiego
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Level 5, 18 Innovation Walk, Monash University, Clayton, Victoria, Australia 3800.
| | - Antonio Verdejo-Garcia
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Level 5, 18 Innovation Walk, Monash University, Clayton, Victoria, Australia 3800.
| | - Alexandra Anderson
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Level 5, 18 Innovation Walk, Monash University, Clayton, Victoria, Australia 3800.
| | - Julia Koutoulogenis
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Level 5, 18 Innovation Walk, Monash University, Clayton, Victoria, Australia 3800.
| | - Mark A Bellgrove
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Level 5, 18 Innovation Walk, Monash University, Clayton, Victoria, Australia 3800.
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Lee RSC, Albertella L, Christensen E, Suo C, Segrave RA, Brydevall M, Kirkham R, Liu C, Fontenelle LF, Chamberlain SR, Rotaru K, Yücel M. A Novel, Expert-Endorsed, Neurocognitive Digital Assessment Tool for Addictive Disorders: Development and Validation Study. J Med Internet Res 2023; 25:e44414. [PMID: 37624635 PMCID: PMC7615064 DOI: 10.2196/44414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/16/2023] [Accepted: 07/22/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND Many people with harmful addictive behaviors may not meet formal diagnostic thresholds for a disorder. A dimensional approach, by contrast, including clinical and community samples, is potentially key to early detection, prevention, and intervention. Importantly, while neurocognitive dysfunction underpins addictive behaviors, established assessment tools for neurocognitive assessment are lengthy and unengaging, difficult to administer at scale, and not suited to clinical or community needs. The BrainPark Assessment of Cognition (BrainPAC) Project sought to develop and validate an engaging and user-friendly digital assessment tool purpose-built to comprehensively assess the main consensus-driven constructs underpinning addictive behaviors. OBJECTIVE The purpose of this study was to psychometrically validate a gamified battery of consensus-based neurocognitive tasks against standard laboratory paradigms, ascertain test-retest reliability, and determine their sensitivity to addictive behaviors (eg, alcohol use) and other risk factors (eg, trait impulsivity). METHODS Gold standard laboratory paradigms were selected to measure key neurocognitive constructs (Balloon Analogue Risk Task [BART], Stop Signal Task [SST], Delay Discounting Task [DDT], Value-Modulated Attentional Capture [VMAC] Task, and Sequential Decision-Making Task [SDT]), as endorsed by an international panel of addiction experts; namely, response selection and inhibition, reward valuation, action selection, reward learning, expectancy and reward prediction error, habit, and compulsivity. Working with game developers, BrainPAC tasks were developed and validated in 3 successive cohorts (total N=600) and a separate test-retest cohort (N=50) via Mechanical Turk using a cross-sectional design. RESULTS BrainPAC tasks were significantly correlated with the original laboratory paradigms on most metrics (r=0.18-0.63, P<.05). With the exception of the DDT k function and VMAC total points, all other task metrics across the 5 tasks did not differ between the gamified and nongamified versions (P>.05). Out of 5 tasks, 4 demonstrated adequate to excellent test-retest reliability (intraclass correlation coefficient 0.72-0.91, P<.001; except SDT). Gamified metrics were significantly associated with addictive behaviors on behavioral inventories, though largely independent of trait-based scales known to predict addiction risk. CONCLUSIONS A purpose-built battery of digitally gamified tasks is sufficiently valid for the scalable assessment of key neurocognitive processes underpinning addictive behaviors. This validation provides evidence that a novel approach, purported to enhance task engagement, in the assessment of addiction-related neurocognition is feasible and empirically defensible. These findings have significant implications for risk detection and the successful deployment of next-generation assessment tools for substance use or misuse and other mental disorders characterized by neurocognitive anomalies related to motivation and self-regulation. Future development and validation of the BrainPAC tool should consider further enhancing convergence with established measures as well as collecting population-representative data to use clinically as normative comparisons.
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Affiliation(s)
- Rico S. C. Lee
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
- Melbourne School of Psychological Sciences, University of Melbourne, Melbourne, Australia
| | - Lucy Albertella
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Erynn Christensen
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Chao Suo
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Rebecca A. Segrave
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Maja Brydevall
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Rebecca Kirkham
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Chang Liu
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Leonardo F. Fontenelle
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
- Obsessive, Compulsive, and Anxiety Spectrum Research Program, Institute of Psychiatry, Federal University of Rio de Janeiro (UFRJ)
- D’Or Institute for Research and Education, Rio de Janeiro, Brazil
| | - Samuel R. Chamberlain
- Department of Psychiatry, University of Southampton, Southampton, United Kingdom; and Southern Health NHS Foundation Trust, Southampton, UK
| | - Kristian Rotaru
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
- Monash Business School, Monash University, Melbourne, Australia
| | - Murat Yücel
- BrainPark, Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
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Zorowitz S, Niv Y. Improving the Reliability of Cognitive Task Measures: A Narrative Review. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2023; 8:789-797. [PMID: 36842498 PMCID: PMC10440239 DOI: 10.1016/j.bpsc.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/26/2023] [Accepted: 02/03/2023] [Indexed: 02/28/2023]
Abstract
Cognitive tasks are capable of providing researchers with crucial insights into the relationship between cognitive processing and psychiatric phenomena. However, many recent studies have found that task measures exhibit poor reliability, which hampers their usefulness for individual differences research. Here, we provide a narrative review of approaches to improve the reliability of cognitive task measures. Specifically, we introduce a taxonomy of experiment design and analysis strategies for improving task reliability. Where appropriate, we highlight studies that are exemplary for improving the reliability of specific task measures. We hope that this article can serve as a helpful guide for experimenters who wish to design a new task, or improve an existing one, to achieve sufficient reliability for use in individual differences research.
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Affiliation(s)
- Samuel Zorowitz
- Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey.
| | - Yael Niv
- Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey; Department of Psychology, Princeton University, Princeton, New Jersey.
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7
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Cognitive inflexibility and repetitive habitual actions are associated with problematic use of the internet. Addict Behav 2023; 139:107600. [PMID: 36608592 DOI: 10.1016/j.addbeh.2022.107600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 11/21/2022] [Accepted: 12/22/2022] [Indexed: 12/25/2022]
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Anderson AC, Robinson AH, Giddens E, Hartshorn B, Allan E, Rowe C, Lawrence T, Chong TTJ, Lubman DI, Verdejo-Garcia A. Proof-of-concept trial of Goal Management Training + to improve executive functions and treatment outcomes in methamphetamine use disorder. Drug Alcohol Depend 2023; 246:109846. [PMID: 37004463 DOI: 10.1016/j.drugalcdep.2023.109846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/30/2023] [Accepted: 03/13/2023] [Indexed: 04/04/2023]
Abstract
BACKGROUND Deficits in executive function are common in methamphetamine use disorder (MUD), likely contributing to difficulties in sustained treatment success. Cognitive remediation interventions are designed to treat such deficits but have not been adapted to the needs of people with MUD. This study presents a proof-of-concept trial to evaluate a new cognitive remediation program for MUD, Goal Management Training+ (GMT+). METHODS This was a cluster-randomised crossover trial comparing GMT+ with a psychoeducation-based control (Brain Health Workshop; BHW). GMT+ is a therapist-administered group-based cognitive remediation for executive dysfunction comprising four 90-minute weekly sessions and daily journal activities. BHW is a lifestyle psychoeducation program matched to GMT+ for therapist involvement, format, and duration. Participants (n = 36; GMT n = 17; BHW n = 19) were recruited from therapeutic communities in Victoria, Australia. Primary outcomes included intervention acceptability, feasibility, and improvements in self-reported executive function. Secondary outcomes included cognitive tests of executive function, severity of methamphetamine dependence, craving, and quality of life. We performed mixed linear modelling and calculated Hedges' g effect sizes. RESULTS GMT+ participant ratings and program retention indicated high acceptability. There was no difference between GMT+ and BHW on self-reported executive function (g = 0.06). Cognitive tasks suggested benefits of GMT+ on information gathering (g = 0.88) and delay-discounting (g = 0.80). Severity of methamphetamine dependence decreased more in GMT+ (g = 1.47). CONCLUSIONS GMT+ was well-accepted but did not improve self-reported executive functioning. Secondary outcomes suggested GMT+ was beneficial for objective cognitive performance and severity of dependence.
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Affiliation(s)
- Alexandra C Anderson
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Melbourne, Victoria, Australia; Monash Addiction Research Centre, Monash University, Victoria, Australia
| | - Alex H Robinson
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Melbourne, Victoria, Australia; Monash Addiction Research Centre, Monash University, Victoria, Australia
| | - Emily Giddens
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Melbourne, Victoria, Australia
| | - Breanna Hartshorn
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Melbourne, Victoria, Australia
| | - Eric Allan
- Odyssey House Victoria, Melbourne, Victoria, Australia
| | - Carol Rowe
- Odyssey House Victoria, Melbourne, Victoria, Australia
| | | | - Trevor T-J Chong
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Melbourne, Victoria, Australia
| | - Dan I Lubman
- Turning Point, Eastern Health, Victoria, Australia; Monash Addiction Research Centre, Monash University, Victoria, Australia
| | - Antonio Verdejo-Garcia
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Melbourne, Victoria, Australia; Monash Addiction Research Centre, Monash University, Victoria, Australia.
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Russell A, Jansen E, Burnett AJ, Lee J, Russell CG. Children's eating behaviours and related constructs: conceptual and theoretical foundations and their implications. Int J Behav Nutr Phys Act 2023; 20:19. [PMID: 36793039 PMCID: PMC9933409 DOI: 10.1186/s12966-023-01407-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 01/06/2023] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND There is a substantial body of research on children's eating behaviours (e.g., food responsiveness and fussiness) and related constructs (e.g., eating in the absence of hunger, appetite self-regulation). This research provides a foundation for understanding children's dietary intakes and healthy eating behaviours, as well as efforts at intervention, whether in relation to food avoidance, overeating and/or trajectories to excess weight gain. The success of these efforts and their associated outcomes is dependent on the theoretical foundation and conceptual clarity of the behaviours and constructs. This, in turn contributes to the coherence and precision of the definitions and measurement of these behaviours and constructs. Limited clarity in these areas ultimately creates uncertainty around the interpretation of findings from research studies and intervention programs. At present there does not appear to be an overarching theoretical framework of children's eating behaviours and associated constructs, or for separate domains of children's eating behaviours/constructs. The main purpose of the present review was to examine the possible theoretical foundations of some of the main current questionnaire and behavioural measures of children's eating behaviours and related constructs. METHODS We reviewed the literature on the most prominent measures of children's eating behaviours for use with children aged ~ 0-12 years. We focused on the explanations and justifications for the original design of the measures and whether these included theoretical perspectives, as well as current theoretical interpretations (and difficulties) of the behaviours and constructs. RESULTS We found that the most commonly used measures had their foundations in relatively applied or practical concerns rather than theoretical perspectives. CONCLUSIONS We concluded, consistent with Lumeng & Fisher (1), that although existing measures have served the field well, to advance the field as a science, and better contribute to knowledge development, increased attention should be directed to the conceptual and theoretical foundations of children's eating behaviours and related constructs. Suggestions for future directions are outlined.
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Affiliation(s)
- Alan Russell
- grid.1014.40000 0004 0367 2697College of Education, Psychology and Social Work, Flinders University, Bedford Park, South Australia Australia
| | - Elena Jansen
- grid.21107.350000 0001 2171 9311Division of Child & Adolescent Psychiatry, Department of Psychiatry & Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Alissa J. Burnett
- grid.1021.20000 0001 0526 7079Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Jookyeong Lee
- grid.1021.20000 0001 0526 7079Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia ,grid.1021.20000 0001 0526 7079CASS Food Research Centre, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Catherine G. Russell
- grid.1021.20000 0001 0526 7079Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
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10
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Protocol for a cluster randomised crossover pilot trial of Goal Management Training + (GMT +) for methamphetamine use disorder. Contemp Clin Trials Commun 2022; 29:100969. [PMID: 36033363 PMCID: PMC9399476 DOI: 10.1016/j.conctc.2022.100969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/07/2022] [Indexed: 11/23/2022] Open
Abstract
Background Methamphetamine use disorder (MUD) is associated with executive dysfunctions, which are linked with poorer treatment outcomes. However, current treatments for MUD do not directly address cognition. We recently modified Goal Management Training (now Goal Management Training+; GMT+), a group-based intervention originally designed to improve executive functions after brain injury, to enhance suitability for MUD. Here, we describe the rationale and design of a trial which aims to determine the acceptability and feasibility of GMT+ during residential rehabilitation for MUD, and its impact on executive functions and clinical outcomes. Methods We used a cluster randomised crossover design: participants are randomised at the cluster level to receive either GMT+ or psychoeducation-control (Brain Health Workshop; BHW). GMT+ is delivered in four 90-min weekly sessions and includes a between-session journal with 10-min daily activities. The program targets attention, impulse control, goal-setting, and decision-making. BHW is a health-oriented intervention that delivers information about the brain and promotes healthy exercise, diet, and sleep. It is matched to GMT+ on program format, length, and time with therapists. We will recruit forty-eight participants with MUD from residential treatment services. Our primary outcomes are acceptability, feasibility, and self-reported executive functioning. Secondary outcomes include craving, quality of life and cognitive performance. Outcome assessments are performed at baseline, post-interventions, 4-week follow-up, and 12-week follow-up. Conclusions This study will provide GMT+ feasibility and acceptability data and will indicate initial efficacy on executive functions and clinical outcomes in residential treatment for MUD. Information from this pilot trial will inform a powered RCT.
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Friedman NP, Gustavson DE. Do Rating and Task Measures of Control Abilities Assess the Same Thing? CURRENT DIRECTIONS IN PSYCHOLOGICAL SCIENCE 2022; 31:262-271. [PMID: 35928929 PMCID: PMC9347699 DOI: 10.1177/09637214221091824] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
The ability to control our thoughts and actions is broadly associated with health and success, so it is unsurprising that measuring self-control abilities is a common goal across many areas of psychology. Puzzlingly, however, different measures of control - questionnaire ratings and computerized cognitive tasks - show only weak relationships to each other. We review evidence that this discrepancy is not just a result of poor reliability or validity of ratings or tasks. Rather, ratings and tasks seem to assess different aspects of control, distinguishable along six main dimensions. To improve the psychological science surrounding self-control, it will be important for future work to investigate the relative importance of these dimensions to the dissociations between self-control measures, and for researchers to motivate and explain which aspects of control they are studying when one or both types of measures are deployed. Keywords: cognitive control, executive function, self-regulation, self-control, impulsivity.
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Affiliation(s)
- Naomi P. Friedman
- Institute for Behavioral Genetics and Department of Psychology and Neuroscience, University of Colorado Boulder
| | - Daniel E. Gustavson
- Department of Medicine and Vanderbilt Genetics Institute, Vanderbilt University Medical Center
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van Baal ST, Moskovsky N, Hohwy J, Verdejo-García A. State impulsivity amplifies urges without diminishing self-control. Addict Behav 2022; 133:107381. [PMID: 35659692 DOI: 10.1016/j.addbeh.2022.107381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/19/2022] [Accepted: 05/26/2022] [Indexed: 11/01/2022]
Abstract
A disproportionate amount of research on impulsivity has focused on trait-related aspects rather than state fluctuations. As a result, the relationship between state impulsivity and moment-to-moment behaviour is unclear. Impulsivity is assumed to negatively affect self-control, but an alternative explanation, yet to be tested, could be that changes in state impulsivity and its homeostatic drivers influence the intensity of urges. We tested whether state impulsivity and hunger affected behaviour through a dual-process model, affecting both the experience of various urges, and self-control, using a smartphone-based experience sampling approach. We found that state impulsivity is associated with stronger urges, but we found no evidence of an association with diminished self-control. Being hungry amplifies urges across different types of urges, and both hunger and late hours are negatively related to the likelihood of controlling urges. These findings imply that the influence of hunger is not limited to the food domain, and provide new insight into the role of state impulsivity in daily life.
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Freis SM, Morrison CL, Smolker HR, Banich MT, Kaiser RH, Hewitt JK, Friedman NP. Executive Functions and Impulsivity as Transdiagnostic Correlates of Psychopathology in Childhood: A Behavioral Genetic Analysis. Front Hum Neurosci 2022; 16:863235. [PMID: 35431847 PMCID: PMC9012075 DOI: 10.3389/fnhum.2022.863235] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/01/2022] [Indexed: 11/16/2022] Open
Abstract
Executive functions (EFs) and impulsivity are dimensions of self-regulation that are both related to psychopathology. However, self-report measures of impulsivity and laboratory EF tasks typically display small correlations, and existing research indicates that impulsivity and EFs may tap separate aspects of self-regulation that independently statistically predict psychopathology in adulthood. However, relationships between EFs, impulsivity, and psychopathology may be different in childhood compared to adulthood. Here, we examine whether these patterns hold in the baseline assessment of the Adolescent Brain and Cognitive Development (ABCD) sample, a national sample of over 11,000 children (including 749 twin pairs) ages 9-10 years. We examine the phenotypic and genetic relationships among latent variables for different components of EFs and multiple facets of impulsivity. Additionally, we assess how EFs and impulsivity relate to composite measures and latent variables of psychopathology derived from parent report. EFs were weakly correlated with impulsivity, and the strength varied by impulsivity facet, emphasizing their separability. We did not identify significant genetic and environmental correlations between EFs and impulsivity. Moreover, controlling for their small relationships with each other, both EFs and some facets of impulsivity statistically predicted an Externalizing factor, attention problems, and social problems, and twin analyses suggested these relationships were genetic in origin. These findings indicate that EFs and impulsivity represent phenotypically and genetically separable aspects of self-regulation that are both transdiagnostic correlates of psychopathology in childhood.
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Affiliation(s)
- Samantha M. Freis
- Institute for Behavioral Genetics, University of Colorado, Boulder, Boulder, CO, United States
- Department of Psychology and Neuroscience, University of Colorado, Boulder, Boulder, CO, United States
| | - Claire L. Morrison
- Institute for Behavioral Genetics, University of Colorado, Boulder, Boulder, CO, United States
- Department of Psychology and Neuroscience, University of Colorado, Boulder, Boulder, CO, United States
| | - Harry R. Smolker
- Institute of Cognitive Science, University of Colorado, Boulder, Boulder, CO, United States
| | - Marie T. Banich
- Department of Psychology and Neuroscience, University of Colorado, Boulder, Boulder, CO, United States
- Institute of Cognitive Science, University of Colorado, Boulder, Boulder, CO, United States
| | - Roselinde H. Kaiser
- Department of Psychology and Neuroscience, University of Colorado, Boulder, Boulder, CO, United States
- Institute of Cognitive Science, University of Colorado, Boulder, Boulder, CO, United States
- Renee Crown Wellness Institute, University of Colorado, Boulder, Boulder, CO, United States
| | - John K. Hewitt
- Institute for Behavioral Genetics, University of Colorado, Boulder, Boulder, CO, United States
- Department of Psychology and Neuroscience, University of Colorado, Boulder, Boulder, CO, United States
| | - Naomi P. Friedman
- Institute for Behavioral Genetics, University of Colorado, Boulder, Boulder, CO, United States
- Department of Psychology and Neuroscience, University of Colorado, Boulder, Boulder, CO, United States
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14
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Hanegraaf L, Hohwy J, Verdejo-Garcia A. Latent classes of maladaptive personality traits exhibit differences in social processing. J Pers 2021; 90:615-630. [PMID: 34714935 PMCID: PMC9545362 DOI: 10.1111/jopy.12686] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/22/2021] [Accepted: 10/24/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Social processing (SP) deficits manifest across numerous mental disorders. However, this research has been plagued by heterogeneity and a piecemeal approach whereby skills are examined in isolation rather than as part of an integrated cognitive system. Here, we combined two dimensional frameworks of psychopathology to address these limitations. METHOD We utilized the Alternative Model for Personality Disorders (AMPD) to distill trait-related heterogeneity within a community sample (n = 200), and the Research Domain Criteria (RDoC) 'Systems for Social Processes' to comprehensively assess SP. We first applied latent class analyses (LCA) to derive AMPD-based groups and subsequently contrasted the performance of these groups on a SP test battery that we developed to align with the RDoC SP constructs. RESULTS Our LCA yielded four distinct subgroups. The recognizable trait profiles and psychopathological symptoms of these classes suggested they were clinically meaningful. The subgroups differed in their SP profiles: one displayed deficits regarding the self, a second displayed deficits in understanding others, a third displayed more severe deficits including affiliation problems, whilst the fourth showed normal performance. CONCLUSIONS Our results support the link between clusters of maladaptive personality traits and distinctive profiles of SP deficits, which may inform research on disorders involving SP dysfunctions.
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Affiliation(s)
- Lauren Hanegraaf
- Turner Institute for Brain and Mental Health, Monash University, Clayton, Victoria, Australia
| | - Jakob Hohwy
- Cognition and Philosophy Lab, Philosophy Department, Monash University, Clayton, Victoria, Australia
| | - Antonio Verdejo-Garcia
- Turner Institute for Brain and Mental Health, Monash University, Clayton, Victoria, Australia
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15
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Voigt K, Giddens E, Stark R, Frisch E, Moskovsky N, Kakoschke N, Stout JC, Bellgrove MA, Andrews ZB, Verdejo-Garcia A. The Hunger Games: Homeostatic State-Dependent Fluctuations in Disinhibition Measured with a Novel Gamified Test Battery. Nutrients 2021; 13:nu13062001. [PMID: 34200678 PMCID: PMC8230368 DOI: 10.3390/nu13062001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 05/28/2021] [Accepted: 06/04/2021] [Indexed: 11/16/2022] Open
Abstract
Food homeostatic states (hunger and satiety) influence the cognitive systems regulating impulsive responses, but the direction and specific mechanisms involved in this effect remain elusive. We examined how fasting, and satiety, affect cognitive mechanisms underpinning disinhibition using a novel framework and a gamified test-battery. Thirty-four participants completed the test-battery measuring three cognitive facets of disinhibition: attentional control, information gathering and monitoring of feedback, across two experimental sessions: one after overnight fasting and another after a standardised meal. Homeostatic state was assessed using subjective self-reports and biological markers (i.e., blood-derived liver-expressed antimicrobial protein 2 (LEAP-2), insulin and leptin). We found that participants who experienced greater subjective hunger during the satiety session were more impulsive in the information gathering task; results were not confounded by changes in mood or anxiety. Homeostatic state did not significantly influence disinhibition mechanisms linked to attentional control or feedback monitoring. However, we found a significant interaction between homeostatic state and LEAP-2 on attentional control, with higher LEAP-2 associated with faster reaction times in the fasted condition only. Our findings indicate lingering hunger after eating increases impulsive behaviour via reduced information gathering. These findings identify a novel mechanism that may underpin the tendency to overeat and/or engage in broader impulsive behaviours.
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Affiliation(s)
- Katharina Voigt
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Clayton, VIC 3800, Australia; (K.V.); (E.G.); (E.F.); (N.M.); (N.K.); (J.C.S.); (M.A.B.)
| | - Emily Giddens
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Clayton, VIC 3800, Australia; (K.V.); (E.G.); (E.F.); (N.M.); (N.K.); (J.C.S.); (M.A.B.)
| | - Romana Stark
- Department of Physiology and Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (R.S.); (Z.B.A.)
| | - Emma Frisch
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Clayton, VIC 3800, Australia; (K.V.); (E.G.); (E.F.); (N.M.); (N.K.); (J.C.S.); (M.A.B.)
| | - Neda Moskovsky
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Clayton, VIC 3800, Australia; (K.V.); (E.G.); (E.F.); (N.M.); (N.K.); (J.C.S.); (M.A.B.)
| | - Naomi Kakoschke
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Clayton, VIC 3800, Australia; (K.V.); (E.G.); (E.F.); (N.M.); (N.K.); (J.C.S.); (M.A.B.)
| | - Julie C. Stout
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Clayton, VIC 3800, Australia; (K.V.); (E.G.); (E.F.); (N.M.); (N.K.); (J.C.S.); (M.A.B.)
| | - Mark A. Bellgrove
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Clayton, VIC 3800, Australia; (K.V.); (E.G.); (E.F.); (N.M.); (N.K.); (J.C.S.); (M.A.B.)
| | - Zane B. Andrews
- Department of Physiology and Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (R.S.); (Z.B.A.)
| | - Antonio Verdejo-Garcia
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Clayton, VIC 3800, Australia; (K.V.); (E.G.); (E.F.); (N.M.); (N.K.); (J.C.S.); (M.A.B.)
- Correspondence: ; Tel.: +61-3-9905-5374
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