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Abstract
Gambling Disorder is associated with elevated rates of suicidal thoughts and acts. However, virtually nothing is known about suicidality in people with subsyndromal forms of gambling disorder. A total of 174 non-treatment seeking subjects were recruited for a study of impulsivity and met criteria for a subsyndromal form of DSM-5 gambling disorder (31.0 % females; mean age = 21.7 ± 3.61 years). Subjects were categorized as being 'at risk of suicide' or 'no suicide risk' based on the Mini-International Neuropsychiatric Interview (MINI). Those with and without suicidality were compared on clinical and cognitive measures. 32 (18.4 %) met MINI criteria for suicidality. Suicidality was significantly associated with mood and anxiety disorders, greater rates of nicotine consumption, and relative impairments in decision-making and cognitive flexibility. These findings suggest that decision-making impairments may be implicated in the development of both gambling problems and suicidality. Future work should address causality, neural correlates, and tailored suicide prevention strategies for people with, or at risk for, disordered forms of gambling.
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102
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Keilp JG, Beers SR, Burke AK, Melhem NM, Oquendo MA, Brent DA, Mann JJ. Neuropsychological deficits in past suicide attempters with varying levels of depression severity. Psychol Med 2014; 44:2965-2974. [PMID: 25066266 PMCID: PMC5724375 DOI: 10.1017/s0033291714000786] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Our previous work identified deficits in interference processing and learning/memory in past suicide attempters who were currently depressed and medication-free. In this study, we extend this work to an independent sample studied at various stages of illness and treatment (mild symptoms, on average) to determine if these deficits in past suicide attempters are evident during a less severe clinical state. METHOD A total of 80 individuals with a past history of major depression and suicide attempt were compared with 81 individuals with a history of major depression and no lifetime suicide attempts on a battery of neurocognitive measures assessing attention, memory, abstract/contingent learning, working memory, language fluency and impulse control. RESULTS Past attempters performed more poorly in attention, memory and working memory domains, but also in an estimate of pre-morbid intelligence. After correction for this estimate, tests that had previously distinguished past attempters - a computerized Stroop task and the Buschke Selective Reminding Test - remained significantly worse in attempters. In a secondary analysis, similar differences were found among those with the lowest levels of depression (Hamilton Depression Rating Scale score <10), suggesting that these deficits may be trait markers independent of current symptomatology. CONCLUSIONS Deficits in interference processing and learning/memory constitute an enduring defect in information processing that may contribute to poor adaptation, other higher-order cognitive impairments and risk for suicidal behavior.
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Affiliation(s)
- J G Keilp
- Department of Molecular Imaging and Neuropathology,New York State Psychiatric Institute,New York, NY,USA
| | - S R Beers
- Department of Psychiatry,University of Pittsburgh School of Medicine,Pittsburgh, PA,USA
| | - A K Burke
- Department of Molecular Imaging and Neuropathology,New York State Psychiatric Institute,New York, NY,USA
| | - N M Melhem
- Department of Psychiatry,University of Pittsburgh School of Medicine,Pittsburgh, PA,USA
| | - M A Oquendo
- Department of Molecular Imaging and Neuropathology,New York State Psychiatric Institute,New York, NY,USA
| | - D A Brent
- Department of Psychiatry,University of Pittsburgh School of Medicine,Pittsburgh, PA,USA
| | - J J Mann
- Department of Molecular Imaging and Neuropathology,New York State Psychiatric Institute,New York, NY,USA
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103
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Intact alternation performance in high lethality suicide attempters. Psychiatry Res 2014; 219:129-36. [PMID: 24878299 PMCID: PMC4410782 DOI: 10.1016/j.psychres.2014.04.050] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 04/23/2014] [Accepted: 04/29/2014] [Indexed: 02/04/2023]
Abstract
Suicide attempters often perform poorly on tasks linked to ventral prefrontal cortical (VPFC) function. Object Alternation (OA) - a VPFC probe - has not been used in these studies. In this study, currently depressed medication-free past suicide attempters whose most severe attempt was of high (n=31) vs. low (n=64) lethality, 114 medication-free depressed non-attempters, and 86 non-patients completed a computerized OA task. Participants also completed comparison tasks assessing the discriminant validity of OA (Wisconsin Card Sort), its concurrent validity relative to tasks associated with past attempt status (computerized Stroop task, Buschke Selective Reminding Test), and its construct validity as a VPFC measure (Go-No Go and Iowa Gambling Task). Against expectations, high lethality suicide attempters - the majority of whom used non-violent methods in their attempts with some planning - outperformed other depressed groups on OA, with no group differences observed on Wisconsin Card Sort. Despite intact performance on OA, past attempters exhibited deficits on the Stroop and Buschke. OA performance was associated with performance on Go-No Go and Iowa Gambling, confirming that OA measures a similar construct. VPFC dysfunction may not be a characteristic of all suicide attempters, especially those who make more carefully planned, non-violent - though potentially lethal - attempts.
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104
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Pharmacological and non-pharmacological interventions to improve cognitive dysfunction and functional ability in clinical depression--a systematic review. Psychiatry Res 2014; 219:25-50. [PMID: 24863864 DOI: 10.1016/j.psychres.2014.05.013] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 04/12/2014] [Accepted: 05/05/2014] [Indexed: 01/11/2023]
Abstract
Cognitive dysfunction is of clinical significance and exerts longstanding implication on patients׳ function. Pharmacological and non-pharmacological treatments of cognitive dysfunction are emerging. This review evaluates pharmacological and non-pharmacological treatments of cognitive impairment primarily in the domains of memory, attention, processing speed and executive function in clinical depression. A total of 35 studies were retrieved from Pubmed, PsycInfo and Scopus after applying inclusion and exclusion criteria. Results show that various classes of antidepressants exert improving effects on cognitive function across several cognitive domains. Specifically, studies suggest that SSRIs, the SSRE tianeptine, the SNRI duloxetine, vortioxetine and other antidepressants such as bupropion and moclobemide may exert certain improving effects on cognitive function in depression, such as in learning and memory and executive function. Class-specific cognitive domains or specific dose-response relationships were not identified yet. The few non-pharmacological studies conducted employing cognitive orientated treatments and cognitive remediation therapy show promising results for the improvement of cognitive impairment in depression. However, several methodological constraints of studies limit generalizability of the results and caution the interpretation. Future direction should consider the development of a neuropsychological consensus cognitive battery to support the discovery, clinical assessment, comparison of studies and registration of new agents in clinical depression.
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105
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Cáceda R, Moskovciak T, Prendes-Alvarez S, Wojas J, Engel A, Wilker SH, Gamboa JL, Stowe ZN. Gender-specific effects of depression and suicidal ideation in prosocial behaviors. PLoS One 2014; 9:e108733. [PMID: 25259712 PMCID: PMC4178187 DOI: 10.1371/journal.pone.0108733] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 09/03/2014] [Indexed: 12/04/2022] Open
Abstract
Background Prosocial behaviors are essential to the ability to relate to others. Women typically display greater prosocial behavior than men. The impact of depression on prosocial behaviors and how gender interacts with those effects are not fully understood. We explored the role of gender in the potential effects of depression on prosocial behavior. Methods We examined prosocial behaviors using a modified version of the Trust Game in a clinical population and community controls. Study participants were characterized on the severity of depression and anxiety, presence of suicidal ideation, history of childhood trauma, recent stressful life events, and impulsivity. We correlated behavioral outcomes with gender and clinical variables using analysis of variance and multiple regression analysis. Results The 89 participants comprised four study groups: depressed women, depressed men, healthy women and healthy men (n = 16–36). Depressed men exhibited reciprocity more frequently than healthy men. Depression induced an inversion of the gender-specific pattern of self-centered behavior. Suicidal ideation was associated with increased reciprocity behavior in both genders, and enhancement of the effect of depression on gender-specific self-centered behavior. Conclusions Depression, particularly suicidal ideation, is associated with reversal of gender-specific patterns of prosocial behavior, suggesting abnormalities in sexual hormones regulation. This explanation is supported by known abnormalities in the hypothalamus-pituitary-adrenal and hypothalamus-pituitary-gonadal axes found in depression.
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Affiliation(s)
- Ricardo Cáceda
- Psychiatric Research Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
- * E-mail:
| | - Tori Moskovciak
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Stefania Prendes-Alvarez
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Justyna Wojas
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Anzhelika Engel
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Samantha H. Wilker
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Jorge L. Gamboa
- Department of Medicine, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Zachary N. Stowe
- Psychiatric Research Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
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106
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Beblo T, Mensebach C, Wingenfeld K, Rullkoetter N, Schlosser N, Driessen M. Subjective memory complaints and memory performance in patients with borderline personality disorder. BMC Psychiatry 2014; 14:255. [PMID: 25214199 PMCID: PMC4172827 DOI: 10.1186/s12888-014-0255-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 08/29/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND It is still a matter of debate as to whether patients with Borderline Personality Disorder (BPD) suffer from memory deficits. Existing studies indicate no or small impairments in memory test performance. However, it was shown in patients with related disorders, such as depression, that self-reported impairment exceeds test malfunction. In the present study we assessed memory performance of BPD patients through the use of memory tests and a questionnaire for subjective memory complaints (SMC) in everyday life. METHODS Thirty-two patients with BPD and 32 healthy control subjects were included in the study. The groups of subjects were comparable with respect to age, education, and gender. Subjects completed verbal and nonverbal memory tests, as well as the everyday memory questionnaire (EMQ). RESULTS BPD patients reported severe SMC but did not show memory test impairment. The results remained stable even when all BPD patients with acute or lifetime depression comorbidity were excluded from analyses. In both groups, SMC and test performances were not related but in BPD patients SMC were related to BPD symptoms. CONCLUSIONS Our data indicate memory impairment of BPD patients in everyday life. However, it cannot be ruled out that increased memory complaints result from patients' negative self-perception. Future research needs to clarify the reasons for memory complaints of BPD patients.
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Affiliation(s)
- Thomas Beblo
- Department of Research, Clinic of Psychiatry and Psychotherapy Bethel, Ev. Hospital Bielefeld, Remterweg 69-71, 33617 Bielefeld, Germany ,Department of Psychology, University of Bielefeld, Bielefeld, Germany
| | - Christoph Mensebach
- Department of Psychosomatic Medicine and Psychotherapy, University Duisburg-Essen, Essen, Germany
| | - Katja Wingenfeld
- Department of Psychiatry, Charité University Berlin, Campus Benjamin Franklin, Berlin, Germany
| | - Nina Rullkoetter
- Department of Research, Clinic of Psychiatry and Psychotherapy Bethel, Ev. Hospital Bielefeld, Remterweg 69-71, 33617 Bielefeld, Germany
| | - Nicole Schlosser
- Department of Research, Clinic of Psychiatry and Psychotherapy Bethel, Ev. Hospital Bielefeld, Remterweg 69-71, 33617 Bielefeld, Germany
| | - Martin Driessen
- Department of Research, Clinic of Psychiatry and Psychotherapy Bethel, Ev. Hospital Bielefeld, Remterweg 69-71, 33617 Bielefeld, Germany
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107
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Gujral S, Dombrovski AY, Butters M, Clark L, Reynolds CF, Szanto K. Impaired Executive Function in Contemplated and Attempted Suicide in Late Life. Am J Geriatr Psychiatry 2014; 22:811-819. [PMID: 23567385 PMCID: PMC3516623 DOI: 10.1016/j.jagp.2013.01.025] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 02/22/2012] [Accepted: 04/23/2012] [Indexed: 10/26/2022]
Abstract
OBJECTIVE: Executive deficits may play an important role in late-life suicide. Yet, current evidence in this area is inconclusive and does not indicate whether these deficits are broadly associated with suicidal ideation or are specific to suicidal behavior. This study examined global cognition and specifically executive function impairments as correlates of suicidal ideation and suicidal behavior in depressed older adults, with the goal of extending an earlier preliminary study. DESIGN: Case-control study. SETTING: University-affiliated psychiatric hospital. PARTICIPANTS: All participants were age 60+: 83 depressed suicide attempters, 43 depressed individuals having suicidal ideation with a specific plan, 54 nonsuicidal depressed participants, and 48 older adults with no history of psychiatric disorders. MEASUREMENTS: Global cognitive function was assessed with Dementia Rating Scale (DRS) and executive function with Executive Interview (EXIT). RESULTS: Both suicide attempters and suicide ideators performed worse than the two comparison groups on the EXIT, with no difference between suicide attempters and suicide ideators. On the DRS total score, as well as on Memory and Attention subscales, suicide attempters and ideators and nonsuicidal depressed subjects performed similarly and were impaired relative to nonpsychiatric control subjects. Controlling for education, substance use disorders, and medication exposure did not affect group differences in performance on either the EXIT or the DRS. CONCLUSIONS: Executive deficits, captured with a brief instrument, are associated broadly with suicidal ideation in older depressed adults but do not appear to directly facilitate suicidal behavior. Our data are consistent with the idea that different vulnerabilities may operate at different stages in the suicidal process.
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Affiliation(s)
- Swathi Gujral
- Western Psychiatric Institute and Clinic, Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA
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108
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Abstract
OBJECTIVE Despite identification of several risk factors, suicide prediction and prevention is still a clinical challenge. Suicide can be seen as a consequence of poor decision making triggered by overwhelming psychological pain. We examined the relationship of choice impulsivity and psychological pain in depressed patients with acute suicidality. METHODS Impulsive choice (delay discounting), psychological pain, and clinical characteristics were assessed in four groups of adults (N = 20-22): a) depressed patients within 72 hours after a suicide attempt, b) depressed patients with active suicidal ideation, c) nonsuicidal depressed patients, and d) healthy controls. RESULTS Impulsive choice was higher in the suicide attempt (0.114 [0.027]) and ideation (0.099 [0.020]) groups compared with nonsuicidal depressed (0.079 [0.020]) and healthy (0.066 [0.019]) individuals (F(3,79) = 3.06, p = .042). Psychological pain data showed a similar profile (F(3,78) = 43.48, p < .001), with 43.4 (2.9) rating of psychological pain for the suicide attempt, 54.3 (2.2) for suicide ideation, 37.0 (3.2) for nonsuicidal depressed, and 13.7 (0.5) for healthy groups. Within the suicide attempt group, persisting suicidal ideation was associated with more severe depression (36.6 [2.9] versus 21.5 [3.1], p = .007) and choice impulsivity (0.134 [0.03] versus 0.078 [0.04], p = .015). Both measures normalized within a week: depression (29.9 [2.6] versus 14.4 [3.0], p = .006) and choice impulsivity (0.114 [0.026] versus 0.066 [0.032], p = .019). CONCLUSIONS Transient impulsive choice abnormalities are found in a subset of those who attempt suicide. Both, suicidal ideation and behavior were associated with choice impulsivity and intense psychological pain.
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109
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Anestis MD, Soberay KA, Gutierrez PM, Hernández TD, Joiner TE. Reconsidering the link between impulsivity and suicidal behavior. PERSONALITY AND SOCIAL PSYCHOLOGY REVIEW 2014; 18:366-86. [PMID: 24969696 DOI: 10.1177/1088868314535988] [Citation(s) in RCA: 166] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
It is widely accepted that suicidal behavior often occurs with little planning. We propose, however, that suicidal behavior is rarely if ever impulsive-that it is too frightening and physically distressing to engage in without forethought-and that suicidal behavior in impulsive individuals is accounted for by painful and fearsome behaviors capable of enhancing their capacity for suicide. We conducted a meta-analysis of the association between trait impulsivity and suicidal behavior and a critical review of research considering the impulsiveness of specific suicide attempts. Meta-analytic results suggest the relationship between trait impulsivity and suicidal behavior is small. Furthermore, studies examining a mediating role of painful and provocative behaviors have uniformly supported our model. Results from our review suggest that researchers have been unable to adequately measure impulsivity of attempts and that measures sensitive to episodic planning must be developed to further our understanding of this phenomenon.
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Affiliation(s)
| | - Kelly A Soberay
- Military Suicide Research Consortium, Denver, CO, USA Denver VA Medical Center MIRECC, CO, USA
| | - Peter M Gutierrez
- Military Suicide Research Consortium, Denver, CO, USA Denver VA Medical Center MIRECC, CO, USA University of Colorado, Boulder, USA
| | | | - Thomas E Joiner
- Military Suicide Research Consortium, Denver, CO, USA Florida State University, Tallahassee, USA
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110
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Richard-Devantoy S, Berlim MT, Jollant F. A meta-analysis of neuropsychological markers of vulnerability to suicidal behavior in mood disorders. Psychol Med 2014; 44:1663-1673. [PMID: 24016405 DOI: 10.1017/s0033291713002304] [Citation(s) in RCA: 201] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND Suicidal behavior results from a complex interplay between stressful events and vulnerability factors, including cognitive deficits. However, it is not clear which cognitive tests may best reveal this vulnerability. The objective was to identify neuropsychological tests of vulnerability to suicidal acts in patients with mood disorders. METHOD A search was made of Medline, EMBASE and PsycINFO databases, and article references. A total of 25 studies (2323 participants) met the selection criteria. A total of seven neuropsychological tests [Iowa gambling task (IGT), Stroop test, trail making test part B, Wisconsin card sorting test, category and semantic verbal fluencies, and continuous performance test] were used in at least three studies to be analysed. RESULTS IGT and category verbal fluency performances were lower in suicide attempters than in patient controls [respectively, g = -0.47, 95% confidence interval (CI) -0.65 to -0.29 and g = -0.32, 95% CI -0.60 to -0.04] and healthy controls, with no difference between the last two groups. Stroop performance was lower in suicide attempters than in patient controls (g = 0.37, 95% CI 0.10-0.63) and healthy controls, with patient controls scoring lower than healthy controls. The four other tests were altered in both patient groups versus healthy controls but did not differ between patient groups. CONCLUSIONS Deficits in decision-making, category verbal fluency and the Stroop interference test were associated with histories of suicidal behavior in patients with mood disorders. Altered value-based and cognitive control processes may be important factors of suicidal vulnerability. These tests may also have the potential of guiding therapeutic interventions and becoming part of future systematic assessment of suicide risk.
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Affiliation(s)
- S Richard-Devantoy
- McGill University, Department of Psychiatry and Douglas Mental Health University Institute, McGill Group for Suicide Studies, Montréal (Québec), Canada
| | - M T Berlim
- McGill University, Department of Psychiatry and Douglas Mental Health University Institute, McGill Group for Suicide Studies, Montréal (Québec), Canada
| | - F Jollant
- McGill University, Department of Psychiatry and Douglas Mental Health University Institute, McGill Group for Suicide Studies, Montréal (Québec), Canada
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Saddichha S, Schuetz C. Impulsivity in remitted depression: a meta-analytical review. Asian J Psychiatr 2014; 9:13-6. [PMID: 24813029 DOI: 10.1016/j.ajp.2014.02.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 02/05/2014] [Indexed: 11/26/2022]
Abstract
AIM Depressive disorder and suicide have been associated with impulsivity in several studies. This paper aimed to review measures of trait impulsivity in remitted depressive disorder. METHODS We used keywords "impulsivity and depression"; "impulsivity and depressive disorder" to narrow down our search on Medline, EMBASE and Psychinfo to include those studies that had reported impulsivity scores using validated and reliable assessment measures in remitted depressive disorder. We searched all English language studies from 1990 to December 2012 with 9 reports meeting the inclusion criteria for depression, which were then reviewed by the two reviewers independently. We generated weighted mean differences (WMDs) for depression from the pooled data using RevManager 5.1 from Cochrane analysis. RESULTS The Barratt Impulsivity Scale (BIS) 11 was the instrument commonly used in depression. 9 studies met inclusion criteria in depression, which yielded a WMD of 10.12 on BIS 11 total scores. CONCLUSION There is a strong association of impulsivity and depression, which persists even in remission.
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Affiliation(s)
- Sahoo Saddichha
- Senior Registrar, NWMH, Melbourne Health, Victoria, Australia.
| | - Christian Schuetz
- Department of Psychiatry & Psychiatrist, Burnaby Centre for Addiction & Mental Health, University of British Columbia, Vancouver, Canada
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112
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Szanto K, Clark L, Hallquist M, Vanyukov P, Crockett M, Dombrovski AY. The cost of social punishment and high-lethality suicide attempts in the second half of life. Psychol Aging 2014; 29:84-94. [PMID: 24660798 PMCID: PMC4051315 DOI: 10.1037/a0035339] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Age-related cognitive changes may contribute to impairments in making complex social decisions. Interpersonal conflict is a key factor behind suicidal behavior in old age, with suicidal motivations ranging from escape to revenge. Such conflicts may prove catastrophic for people prone to suicide, in part because of their tendency to make disadvantageous decisions. Yet, little is known about social decision making in older suicidal individuals. We assessed economic bargaining behavior using the Ultimatum Game, where players decide whether to accept or punish (reject) unfair monetary offers from another player. Our sample included depressed older adults with a history of high-medical-lethality suicide attempts, low-medical-lethality suicide attempts, nonsuicidal depressed older adults, and those with no psychiatric history who served as control groups. Participants in all groups punished their counterparts in response to unfair offers. However, low-lethality attempters, nonsuicidal depressed, and nonpsychiatric controls punished less as the cost of punishment increased, accepting more unfair offers as the stakes grew large. High-lethality attempters did not adjust their choices based on stake magnitude, punishing unfair offers without regard to the cost. Two thirds of the difference between the high-lethality attempters and nonpsychiatric controls was explained by individual differences in fairness judgments: the comparison group judged offer fairness as a joint function of inequality and magnitude, whereas the high-lethality attempter participants judged offer fairness on the basis of inequality. In real life, high-lethality attempters' relative insensitivity to the cost of retaliation may lead to uncompromising, catastrophic responses to conflict.
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Affiliation(s)
| | - Luke Clark
- Department of Psychology, University of Cambridge
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113
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Richard-Devantoy S, Orsat M, Dumais A, Turecki G, Jollant F. Neurocognitive vulnerability: suicidal and homicidal behaviours in patients with schizophrenia. CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2014; 59:18-25. [PMID: 24444320 PMCID: PMC4079223 DOI: 10.1177/070674371405900105] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Schizophrenia is associated with an increase in the risk of both homicide and suicide. The objectives of this study were to systematically review all published articles that examined the relation between neurocognitive deficits and suicidal or homicidal behaviours in schizophrenia, and to identify vulnerabilities in suicidal and homicidal behaviour that may share a common pathway in schizophrenia. METHODS A systematic review of the literature was performed using MEDLINE to include all studies published up to August 31, 2012. RESULTS Among the 1760 studies, 7 neuropsychological and 12 brain imaging studies met the selection criteria and were included in the final analysis. The neuropsychological and functional neuroimaging studies were inconclusive. The structural imaging studies reported various alterations in patients with schizophrenia and a history of homicidal behaviour, including: reduced inferior frontal and temporal cortices, increased mediodorsal white matter, and increased amygdala volumes. Patients with a history of suicidal acts showed volumetric reductions in left orbitofrontal and superior temporal cortices, while right amygdala volume was increased, though, these findings have rarely been replicated. Finally, no study has directly compared neurocognitive markers of suicidal and homicidal risk. CONCLUSION These results suggest that brain alterations, in addition to those associated with schizophrenia, may predispose some patients to a higher risk of homicide or suicide in particular circumstances. Moreover, some of these alterations may be shared between homicidal and suicidal patients. However, owing to several limitations, including the small number of available studies, no firm conclusions can be drawn and further investigations are necessary.
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Affiliation(s)
- Stéphane Richard-Devantoy
- Psychiatrist, Postdoctoral Fellow in Neuroscience, Department of Psychiatry and Douglas Mental Health University Institute, McGill Group for Suicide Studies, McGill University, Montreal, Quebec; Associate Member, Laboratoire de Psychologie des Pays de la Loire, UPRES EA 4638, Université d'Angers, Angers, France
| | - Manuel Orsat
- Psychiatrist, Secteur 16 de Psychiatrie Adultes, Centre Hospitalier Spécialisé de la Sarthe, Allonnes, France
| | - Alexandre Dumais
- Psychiatrist, Assistant Professor, Department of Psychiatry and Research Centre-Pinel Institut, University of Montreal, Montreal, Quebec
| | - Gustavo Turecki
- Professor, Departments of Psychiatry, Human Genetics, and Neurology and Neurosurgery, McGill University, Montreal, Quebec; Vice-Chair, Research and Academic Affairs, Department of Psychiatry, McGill University, Montreal, Quebec; Director, McGill Group for Suicide Studies, Montreal, Quebec; Co-Director, Douglas-Bell Canada Brain Bank (suicide studies), Montreal, Quebec; Head, Depressive Disorders Program, Douglas Institute, Montreal, Quebec; Director, Réseau québécois de recherche sur le suicide, Montreal, Quebec
| | - Fabrice Jollant
- Assistant Professor, Department of Psychiatry and Douglas Mental Health University Institute, McGill Group for Suicide Studies, McGill University, Montreal, Quebec
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Richard-Devantoy S, Olié E, Guillaume S, Bechara A, Courtet P, Jollant F. Distinct alterations in value-based decision-making and cognitive control in suicide attempters: toward a dual neurocognitive model. J Affect Disord 2013; 151:1120-4. [PMID: 23876195 DOI: 10.1016/j.jad.2013.06.052] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 06/28/2013] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The literature suggests that many suicide attempters show impairment in both decision-making and cognitive control. However, it is not clear if these deficits are linked to each other, and if they may be related to more basic alterations in attention. This is a relevant question in the perspective of future interventions targeting cognitive deficits to prevent suicidal acts. METHOD Two different populations of patients with histories of suicide attempts were assessed (N=142 and 119). The Iowa Gambling Task (IGT) was used to measure decision-making in both populations. We used a D2 cancellation task and a verbal working memory task in population 1; the Stroop test, the N-Back task, the Trail Making Test, and the Hayling Sentence Completion test in population 2. RESULTS Regarding decision-making, we only found a small negative correlation between the Hayling test error score (r=-0.24; p=0.01), and the net score from the second half of the IGT. In contrast, working memory, cognitive flexibility and cognitive inhibition measures were largely inter-correlated. LIMITATION Most patients were medicated. Only patients with mood disorders. CONCLUSION These results add to previous findings suggesting that the neurocognitive vulnerability to suicidal behavior may rely on impairments in two distinct anatomical systems, one processing value-based decision-making (associated with ventral prefrontal cortex, among others) and one underlying cognitive control (associated with more dorsal prefrontal regions). This distinction may result in tailored-made cognitive interventions.
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Affiliation(s)
- Stéphane Richard-Devantoy
- McGill University, Department of Psychiatry & Douglas Mental Health University Institute McGill Group for Suicide Studies, Montréal, Québec, Canada; Laboratoire de Psychologie des Pays de la Loire EA 4638, Université de Nantes et Angers, France
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Dombrovski AY, Szanto K, Clark L, Reynolds CF, Siegle GJ. Reward signals, attempted suicide, and impulsivity in late-life depression. JAMA Psychiatry 2013; 70:1. [PMID: 23925710 PMCID: PMC3859132 DOI: 10.1001/jamapsychiatry.2013.75] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
IMPORTANCE—Suicide can be viewed as an escape from unendurable punishment at the cost of any future rewards. Could faulty estimation of these outcomes predispose to suicidal behavior? In behavioral studies, many of those who have attempted suicide misestimate expected rewards on gambling and probabilistic learning tasks.OBJECTIVES—To describe the neural circuit abnormalities that underlie disadvantageous choices in people at risk for suicide and to relate these abnormalities to impulsivity, which is one of the components of vulnerability to suicide.DESIGN—Case-control functional magnetic resonance imaging study of reward learning using are inforcement learning model.SETTING—University hospital and outpatient clinic.PATIENTS—Fifty-three participants 60 years or older, including 15 depressed patients who had attempted suicide, 18 depressed patients who had never attempted suicide (depressed control subjects), and 20 psychiatrically healthy controls.MAIN OUTCOMES AND MEASURES—Components of the cortical blood oxygenation level–dependent response tracking expected and unpredicted rewards.RESULTS—Depressed elderly participants displayed 2 distinct disruptions of control over reward-guided behavior. First, impulsivity and a history of suicide attempts (particularly poorly planned ones) were associated with a weakened expected reward signal in the paralimbic cortex,which in turn predicted the behavioral insensitivity to contingency change. Second, depression was associated with disrupted corticostriatothalamic encoding of unpredicted rewards, which in turn predicted the behavioral over sensitivity to punishment. These results were robust to the effects of possible brain damage from suicide attempts, depressive severity, co-occurring substance use and anxiety disorders, antidepressant and anticholinergic exposure, lifetime exposure to electroconvulsive therapy, vascular illness, and incipient dementia.CONCLUSIONS AND RELEVANCE—Altered paralimbic reward signals and impulsivity and/or carelessness may facilitate unplanned suicidal acts. This pattern, also seen in gambling and cocaine use, may reflect a primary deficit in the paralimbic cortex or in its mesolimbic input. The over reactivity to punishment in depression may be caused in part by a disruption of appetitive learning in the corticostriatothalamic circuits.
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Affiliation(s)
- Alexandre Y Dombrovski
- MD, Department of Psychiatry, University of Pittsburgh, 3811 O’Hara St, Pittsburgh, PA 15213, USA.
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116
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Richard-Devantoy S, Jollant F. [Suicide in the elderly: age-related specificities?]. SANTE MENTALE AU QUEBEC 2013; 37:151-73. [PMID: 23666286 DOI: 10.7202/1014949ar] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Suicide in the elderly raises the question of our relationship with aging and death. Suicide rate is relatively high in this group and is significantly related to depression widely under-diagnosed in the elderly. Suicidal behaviour in the elderly has clinical specificities including high intentionality and lethality, usually little personal history of suicidal behaviour and low levels of impulsivity-aggression. Suicidal vulnerability could rely on etiopathogenic mechanisms both common and different according to age; for example, a preponderance of early developmental factors and impulsivity-aggression in adolescents and young adults vs. pathological aging in older adults, but partly similar neurocognitive deficits leading individuals not to respond adequately to their environment (itself different with age). Direct comparisons between elderly and younger subjects would be required. The article concludes with a summary of the principles of recognition and management of suicide risk.
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Affiliation(s)
- Stéphane Richard-Devantoy
- McGill University, Department of Psychiatry & Douglas Mental Health University Institute, McGill Group for Suicide Studies, Montréal (Québec), Canada.
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117
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Patros CHG, Hudec KL, Alderson RM, Kasper LJ, Davidson C, Wingate LR. Symptoms of attention-deficit/hyperactivity disorder (ADHD) moderate suicidal behaviors in college students with depressed mood. J Clin Psychol 2013; 69:980-93. [PMID: 23775306 DOI: 10.1002/jclp.21994] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVE College students with attention-deficit/hyperactivity disorder-related hyperactive/impulsive (HI) and/or inattentive (IA) symptoms may be at greater risk for suicidal behavior due to core and secondary symptoms that increase their potential to engage in behaviors that put them at risk for suicidal behavior. Consequently, the current study examined the moderating effect of combined HI/IA symptoms, in addition to independent HI and IA symptoms on the relationship between depressed mood and suicidal thoughts and behavior. METHOD A sample of 1,056 undergraduate students (61.5% female, 96.4% aged 18-24 years) provided self-report ratings of mood, suicidal behavior (thoughts, self-harm, attempts, and need for medical attention), and current HI/IA symptoms. RESULTS Significant moderation effects were detected, such that greater HI/IA symptoms were associated with a stronger relationship between depressed mood and suicidal ideation and attempts, but not self-harm. Current HI and IA symptoms significantly moderated the relationship between depressed mood and suicidal thoughts and suicide attempts, but did not moderate the relationship between depressed mood and self-harm and need for medical attention. CONCLUSIONS The current findings suggest that the presence of combined HI/IA symptoms conveys increased suicide risk for depressed college students. Additionally, results suggest a complex relationship between independent HI and IA symptoms and severe suicidal outcomes.
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118
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Keilp JG, Gorlyn M, Russell M, Oquendo MA, Burke AK, Harkavy-Friedman J, Mann JJ. Neuropsychological function and suicidal behavior: attention control, memory and executive dysfunction in suicide attempt. Psychol Med 2013; 43:539-551. [PMID: 22781400 PMCID: PMC3767483 DOI: 10.1017/s0033291712001419] [Citation(s) in RCA: 212] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Executive dysfunction, distinct from other cognitive deficits in depression, has been associated with suicidal behavior. However, this dysfunction is not found consistently across samples. METHOD Medication-free subjects with DSM-IV major depressive episode (major depressive disorder and bipolar type I disorder) and a past history of suicidal behavior (n = 72) were compared to medication-free depressed subjects with no history of suicidal behavior (n = 80) and healthy volunteers (n = 56) on a battery of tests assessing neuropsychological functions typically affected by depression (motor and psychomotor speed, attention, memory) and executive functions reportedly impaired in suicide attempters (abstract/contingent learning, working memory, language fluency, impulse control). RESULTS All of the depressed subjects performed worse than healthy volunteers on motor, psychomotor and language fluency tasks. Past suicide attempters, in turn, performed worse than depressed non-attempters on attention and memory/working memory tasks [a computerized Stroop task, the Buschke Selective Reminding Task (SRT), the Benton Visual Retention Test (VRT) and an N-back task] but not on other executive function measures, including a task associated with ventral prefrontal function (Object Alternation). Deficits were not accounted for by current suicidal ideation or the lethality of past attempts. A small subsample of those using a violent method in their most lethal attempt showed a pattern of poor executive performance. CONCLUSIONS Deficits in specific components of attention control, memory and working memory were associated with suicidal behavior in a sample where non-violent attempt predominated. Broader executive dysfunction in depression may be associated with specific forms of suicidal behavior, rather than suicidal behavior per se.
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Affiliation(s)
- J G Keilp
- Department of Molecular Imaging and Neuropathology, New York State Psychiatric Institute, NY, USA.
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119
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Possible association between suicide committed under influence of ethanol and a variant in the AUTS2 gene. PLoS One 2013; 8:e57199. [PMID: 23437340 PMCID: PMC3577719 DOI: 10.1371/journal.pone.0057199] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Accepted: 01/23/2013] [Indexed: 12/30/2022] Open
Abstract
Background rs6943555 in AUTS2 has been shown to modulate ethanol consumption. We hypothesized that rs6943555 might be associated with completed suicide. Methods We genotyped rs6943555 in 625 completed suicides and 3861 controls using real-time TaqMan Allelic Discrimination Assay. All individuals were Polish Caucasians. Results We detected an association between suicide and rs6943555 A allele (OR = 1.17, P = 0.018 for allelic comparison, OR = 1.24, P = 0.013 for dominant, and OR = 1.18, P = 0.020 for co-dominant model of inheritance). The association remained significant after adjusting for age and gender (co-dominant: P = 0.002 and dominant model: P = 0.001). After stratifying suicides according to blood ethanol concentration (BAC≤ 20 mg/dl and BAC > 20 mg/dl) the association remained significant only for cases who committed suicide under influence of alcohol (co-dominant: OR = 1.37, P = 0.004 and dominant model: OR = 1.45, P = 0.006). To validate this finding we genotyped another cohort of 132 cases. We reproduced the association between rs6943555 A allele and suicide under influence of ethanol (allelic comparison: OR = 1.55, P = 0.023; co-dominant : OR = 1.54, P = 0.031; dominant model: OR = 1.84, P = 0.015). Analyzing pooled suicides with BAC >20 mg/dl (N = 300) we found the association of rs6943555 A allele not only vs. controls (allelic OR = 1.41, P = 0.00029) but also vs. cases with BAC ≤ 20 mg/dl (N = 449, allelic OR = 1.33, P = 0.019). Conclusions In our study rs6943555 A allele is associated with suicide committed after drinking ethanol shortly before death. The rs6943555 A allele may be linked to adverse emotional reaction to ethanol, which could explain the association with lower consumption in general population as well as the predisposition to suicide under influence of ethanol.
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120
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Kennedy AP, Binder EB, Bowman D, Harenski K, Ely T, Cisler JM, Tripathi SP, VanNess S, Kilts CD. A common TPH2 haplotype regulates the neural processing of a cognitive control demand. Am J Med Genet B Neuropsychiatr Genet 2012; 159B:829-40. [PMID: 22915309 DOI: 10.1002/ajmg.b.32090] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Accepted: 07/11/2012] [Indexed: 11/10/2022]
Abstract
The monoamine neurotransmitter, serotonin, critically regulates the function of the cerebral cortex and is involved in psychiatric disorders. Tryptophan hydroxylase (TPH) is the rate-limiting enzyme in the synthesis of serotonin with the neuron-specific TPH2 isoform present exclusively in the brain and encoded by the TPH2 gene on chromosome 12q21. The haplotype structure of TPH2 was defined for 16 single-nucleotide polymorphisms (SNPs) in a healthy subject population and a haplotype block analysis confirmed the presence of a six SNP haplotype in a yin configuration that has previously been associated with risk for suicidality, depression, and anxiety disorders. Functional magnetic resonance imaging (fMRI) was used to assess the influence of TPH2 variation on brain function related to cognitive control using the Multi-Source Interference Task (MSIT). The MSIT-related blood oxygen level-dependent (BOLD) response was increased with increasing copies of the TPH2 yin haplotype for the dorsal anterior cingulate cortex (dACC), right inferior frontal cortex (IFC), and anterior striatum. A functional connectivity analysis further revealed that increasing numbers of the TPH2 yin haplotype was associated with diminished functional coupling between the dACC and the right IFC, precentral gyrus, parietal cortex and dlPFC. A moderation analysis indicated that the relationship between neural processing networks and cognitive control was significantly modulated by allelic variation for the TPH2 yin haplotype. These findings suggest that the association of risk for psychiatric disorders with a common TPH2 yin haplotype is related to the inefficient functional engagement of cortical areas involved in cognitive control and alterations in the mode of functional connectivity of dACC pathways.
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Affiliation(s)
- Ashley P Kennedy
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, Georgia, USA
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121
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Impaired decision making in adolescent suicide attempters. J Am Acad Child Adolesc Psychiatry 2012; 51:394-403. [PMID: 22449645 PMCID: PMC3314230 DOI: 10.1016/j.jaac.2012.01.002] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 01/04/2012] [Accepted: 01/10/2012] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Decision-making deficits have been linked to suicidal behavior in adults. However, it remains unclear whether impaired decision making plays a role in the etiopathogenesis of youth suicidal behavior. The purpose of this study was to examine decision-making processes in adolescent suicide attempters and never-suicidal comparison subjects. METHOD Using the Iowa Gambling Task, the authors examined decision making in 40 adolescent suicide attempters, 13 to 18 years old, and 40 never-suicidal, demographically matched psychiatric comparison subjects. RESULTS Overall, suicide attempters performed significantly worse on the Iowa Gambling Task than comparison subjects. This difference in overall task performance between the groups persisted in an exact conditional logistic regression analysis that controlled for affective disorder, current psychotropic medication use, impulsivity, and hostility (adjusted odds ratio = 0.96, 95% confidence interval = 0.90-0.99, p < 0.05). A two-way repeated-measures analysis of variance revealed a significant group-by-block interaction, demonstrating that attempters failed to learn during the task, picking approximately the same proportion of disadvantageous cards in the first and final blocks of the task. In contrast, comparison subjects picked proportionately fewer cards from the disadvantageous decks as the task progressed. Within the attempter group, overall task performance did not correlate with any characteristic of the index attempt or with the personality dimensions of impulsivity, hostility, and emotional lability. CONCLUSIONS Similar to findings in adults, impaired decision making is associated with suicidal behavior in adolescents. Longitudinal studies are needed to elucidate the temporal relationship between decision-making processes and suicidal behavior and to help frame potential targets for early identification and preventive interventions to reduce youth suicide and suicidal behavior.
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122
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Richard-Devantoy S, Gorwood P, Annweiler C, Olié JP, Le Gall D, Beauchet O. Suicidal behaviours in affective disorders: a deficit of cognitive inhibition? CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2012; 57:254-62. [PMID: 22480591 DOI: 10.1177/070674371205700409] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Suicide has been related to affective disorders. We hypothesized that suicide could be associated with cognitive inhibition deficit. Our study aimed to systematically review all published articles that examined the relation between cognitive inhibition deficit and suicidal behaviours (that is, suicide attempt or suicidal ideation) in patients with affective disorders. METHOD We performed an English and French MEDLINE and EMBASE search, ranging from 1970 to 2010, indexed under the MeSH terms of suicide, neuropsychology, neuropsychological tests, and executive function, combined with the following title and abstract terms: neuropsychological functions, executive functioning, and executive performance. RESULTS Among the 164 selected studies, 9 observational studies met the selection criteria and were included in the final analysis. The number of participants ranged from 57 to 244 (28% to 66%, respectively, were men). Executive dysfunction was more frequently found among patients with suicidal behaviours. In particular, higher cognitive inhibition deficit was observed in depressed subjects with suicide behaviours, compared with depressed subjects without any suicidal behaviour. The results of the meta-analysis showed a higher impairment in inhibition score, according to the number of perseverations in the Wisconsin Card Sorting Test (Cohen d = 0.68) than in inhibition according to the time needed to perform the Trail-Making Test part B (d = 0.01) among patients with suicidal behaviour, compared with patients with no suicidal behaviour. CONCLUSION This systematic review and meta-analysis showed a positive association between cognitive inhibition deficit and suicide attempts in patients with affective disorders. Future research should examine whether cognitive inhibition deficit precedes the suicidal behaviour.
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Affiliation(s)
- Stéphane Richard-Devantoy
- McGill University, Department of Psychiatry and Douglas Mental Health University Institute, McGill Group for Suicide Studies, Montreal, Quebec.
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123
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Sinclair SJ, Bello I, Nyer M, Slavin-Mulford J, Stein MB, Renna M, Antonius D, Blais MA. The Suicide (SPI) and Violence Potential Indices (VPI) from the Personality Assessment Inventory: A Preliminary Exploration of Validity in an Outpatient Psychiatric Sample. JOURNAL OF PSYCHOPATHOLOGY AND BEHAVIORAL ASSESSMENT 2012. [DOI: 10.1007/s10862-012-9277-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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124
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Andover MS, Schatten HT, Crossman DM, Donovick PJ. NEUROPSYCHOLOGICAL FUNCTIONING IN PRISONERS WITH AND WITHOUT SELF-INJURIOUS BEHAVIORS: Implications for the Criminal Justice System. CRIMINAL JUSTICE AND BEHAVIOR 2011; 38:1103-1114. [PMID: 28503002 PMCID: PMC5426813 DOI: 10.1177/0093854811420670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Neuropsychological functioning has not yet been investigated among prisoners who engage in self-injurious behaviors, specifically attempted suicide and nonsuicidal self-injury (NSSI). The purpose of this study was to investigate neuropsychological functioning in prisoners with and without histories of NSSI and attempted suicide. The sample consisted of 173 male prisoners referred for neuropsychological evaluation. Of participants, 56% reported a history of self-injury. Performance on the neuropsychological domains of intelligence, memory, attention, motor functioning, and executive functioning was assessed. No group differences were found among those with NSSI, with NSSI and suicide attempts, and with no history of deliberate self-harm, although functioning was poor in all domains. Implications of the high prevalence of self-injury in this prison sample, as well as implications of impaired functioning on the treatment of self-injurious behaviors, are discussed.
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125
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Jollant F, Lawrence NL, Olié E, Guillaume S, Courtet P. The suicidal mind and brain: a review of neuropsychological and neuroimaging studies. World J Biol Psychiatry 2011; 12:319-39. [PMID: 21385016 DOI: 10.3109/15622975.2011.556200] [Citation(s) in RCA: 238] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES. We aimed at reviewing studies exploring dysfunctional cognitive processes, and their neuroanatomical basis, in suicidal behaviour, and to develop a neurocognitive working model. Methods. A literature search was conducted. RESULTS. Several limitations were found. The main reported neuropsychological findings are a higher attention to specific negative emotional stimuli, impaired decision-making, lower problem-solving abilities, reduced verbal fluency, and possible reduced non-specific attention and reversal learning in suicide attempters. Neuroimaging studies mainly showed the involvement of ventrolateral orbital, dorsomedial and dorsolateral prefrontal cortices, the anterior cingulate gyrus, and, to a lesser extent, the amygdala. In addition, alterations in white matter connections are suggested. CONCLUSIONS. These studies support the concept of alterations in suicidal behaviour distinct from those of comorbid disorders. We propose that a series of neurocognitive dysfunctions, some with trait-like characteristics, may facilitate the development of a suicidal crisis during stressful circumstances: (1) an altered modulation of value attribution, (2) an inadequate regulation of emotional and cognitive responses, and (3) a facilitation of acts in an emotional context. This preliminary model may represent a framework for the design of future studies on the pathophysiology, prediction and prevention of these complex human behaviours.
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Affiliation(s)
- Fabrice Jollant
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, Montreal, Québec, Canada.
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126
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Abstract
Suicide is common among individuals with psychiatric illness; executive functioning may be associated with suicide risk. The authors examined demographic, clinical, and executive-functioning variables in suicide ideators and suicide attempters, hypothesizing that attempters would demonstrate poorer executive-functioning skills. Seventy-seven participants with psychiatric illness completed a neuropsychological battery while hospitalized or residing in crisis-houses after expressing suicidal ideation (N=40) or making a suicide attempt (N=37). Logistic regression predicted suicide Ideator versus suicide Attempter status; suicide Attempters exhibited poorer inhibition but better problem-solving ability than suicide Ideators. Suicide attempt risk may be associated with better problem-solving skills, but worse inhibitory control.
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127
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Beblo T, Sinnamon G, Baune BT. Specifying the Neuropsychology of Affective Disorders: Clinical, Demographic and Neurobiological Factors. Neuropsychol Rev 2011; 21:337-59. [PMID: 21660503 DOI: 10.1007/s11065-011-9171-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Accepted: 05/24/2011] [Indexed: 12/30/2022]
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128
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Clark L, Dombrovski AY, Siegle GJ, Butters MA, Shollenberger CL, Sahakian BJ, Szanto K. Impairment in risk-sensitive decision-making in older suicide attempters with depression. Psychol Aging 2011; 26:321-330. [PMID: 21443349 PMCID: PMC3115442 DOI: 10.1037/a0021646] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Suicidal behavior is a potentially lethal complication of late-life depression. In younger adults, suicide has been linked to abnormal decision-making ability. Given that there are substantial age-related decreases in decision-making ability, and that older adults experience environmental stressors that require effective decision-making, we reasoned that impaired decision-making may be particularly relevant to suicidal behavior in the elderly. We thus compared performance on a probabilistic decision-making task that does not involve working memory ("Cambridge Gamble Task") in four groups of older adults: (1) individuals with major depression and a history of suicide attempt (n = 25), (2) individuals with major depression with active suicidal ideation but no suicide attempt (n = 13), (3) individuals with major depression without suicidality (n = 35), and (4) nondepressed control subjects (n = 22). There was a significant effect of group on quality of decision-making, whereby the suicide attempters exhibited poorer ability to choose the likely outcome, compared with the nonsuicidal depressed and nondepressed comparison subjects. There were no group differences in betting behavior. The suicide attempters differed in several aspects of social problem-solving on a self-report scale. Quality of decision-making was negatively correlated with the score on the impulsive/careless problem-solving subscale. These data suggest that older suicide attempters have a deficit in risk-sensitive decision-making, extending observations in younger adults. More specifically, older suicide attempters seem to neglect outcome probability and make poor choices. These impairments may precipitate and perpetuate suicidal crisis in depressed elders. Identification of decision-making impairment in suicidal elders may help with designing effective interventions.
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Affiliation(s)
- Luke Clark
- Department of Experimental Psychology, University of Cambridge
| | | | - Greg J Siegle
- Department of Psychiatry, University of Pittsburgh School of Medicine
| | - Meryl A Butters
- Department of Psychiatry, University of Pittsburgh School of Medicine
| | | | - Barbara J Sahakian
- Department of Psychiatry, University of Cambridge School of Clinical Medicine, Addenbrooke's Hospital
| | - Katalin Szanto
- Department of Psychiatry, University of Pittsburgh School of Medicine
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129
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Suicidal ideation, parent-child relationships, and adverse childhood experiences: a cross-validation study using a Graphical Markov Model. Child Psychiatry Hum Dev 2011; 42:119-33. [PMID: 20953830 DOI: 10.1007/s10578-010-0203-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Suicide is one of the leading causes of death in many Western countries. An exploration of factors associated with suicidality may help to understand the mechanisms that lead to suicide. Two samples in Germany (n = 500 and n = 477) were examined via Internet regarding suicidality, depression, alcohol abuse, adverse childhood experiences, and parent-child relationships. A Graphical Markov Model was constructed from the first subsample, testing for main, quadratic and interaction effects. All effects in the model were cross-validated using the second subsample. Depression was found to be a strong predictor of suicidality; alcohol abuse was not a predictor. Both maternal and paternal love also predicted suicidality; the former had an indirect effect via depression and the latter a direct effect. Early experiences with violence showed both a direct and indirect association with suicidality. In addition to depression being a predictor for suicidality, various pathways connect suicidality with early childhood experiences.
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130
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Neurocognitive functioning and suicidality in schizophrenia spectrum disorders. Compr Psychiatry 2011; 52:156-63. [PMID: 21295222 DOI: 10.1016/j.comppsych.2010.06.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 04/09/2010] [Accepted: 06/11/2010] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate whether suicide attempters had higher IQ, better executive functioning, or were more impulsive as measured by neuropsychological tests than non-attempters in a group of patients with schizophrenia spectrum disorders. METHOD One hundred seventy-four patients with schizophrenia spectrum disorders were assessed with a clinical interview for diagnosis, suicidality, symptoms and function, and underwent an extensive neurocognitive test battery. RESULTS There were no statistically significant differences in any neurocognitive domains between lifetime suicide attempters and non-attempters, or between patients with different rates of suicide attempts. Currently suicidal patients were significantly more impulsive (had poorer inhibitory control) than currently non-suicidal patients, but this difference was mediated by positive psychotic symptoms. CONCLUSION The findings indicate that among patients with schizophrenia spectrum disorders, there are no significant differences in IQ or neurocognitive functioning between suicide attempters and non-attempters.
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131
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Burton CZ, Vella L, Weller JA, Twamley EW. Differential effects of executive functioning on suicide attempts. J Neuropsychiatry Clin Neurosci 2011; 23:173-9. [PMID: 21677246 PMCID: PMC3626287 DOI: 10.1176/jnp.23.2.jnp173] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Suicide is common among individuals with psychiatric illness; executive functioning may be associated with suicide risk. The authors examined demographic, clinical, and executive-functioning variables in suicide ideators and suicide attempters, hypothesizing that attempters would demonstrate poorer executive-functioning skills. Seventy-seven participants with psychiatric illness completed a neuropsychological battery while hospitalized or residing in crisis-houses after expressing suicidal ideation (N=40) or making a suicide attempt (N=37). Logistic regression predicted suicide Ideator versus suicide Attempter status; suicide Attempters exhibited poorer inhibition but better problem-solving ability than suicide Ideators. Suicide attempt risk may be associated with better problem-solving skills, but worse inhibitory control.
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Affiliation(s)
- Cynthia Z Burton
- San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA
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132
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Hwang JP, Lee TW, Tsai SJ, Chen TJ, Yang CH, Lirng JF, Tsai CF. Cortical and subcortical abnormalities in late-onset depression with history of suicide attempts investigated with MRI and voxel-based morphometry. J Geriatr Psychiatry Neurol 2010; 23:171-84. [PMID: 20430976 DOI: 10.1177/0891988710363713] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Late-onset major depression is thought to have a biological (vascular) basis, which could be a result of brain structure change. Vascular lesions can affect both the gray matter (GM) and white matter (WM), while most previous studies addressed WM abnormality. This study explored the disease- and symptom (history of suicide attempt) -related GM morphometry in elderly male patients with late-onset depression. A total of 70 patients with depression admitted to our geriatric psychiatric ward were investigated, and 26 age-matched males were recruited as controls. We used T1-weighted magnetic resonance imaging (MRI) to obtain cerebral structural information and adopted voxel-based morphometry (VBM) to investigate brain volume change related to disease (depression vs control) and symptom (depression with history of suicide attempt vs depression without history of suicide attempt). Late-onset depression was associated with smaller volumes in several regions of GM (insula and the posterior cingulate region) and WM (subcallosal cingulate cortex, floor of lateral ventricles, parahippocampal region, insula, and the cerebellum). Compared with nonsuicidal counterpart, suicidal depression was associated with decreased GM and WM volume in the frontal, parietal, and temporal regions, and the insula, lentiform nucleus, midbrain, and the cerebellum. Marked regional volume reduction was noticed at dorsal medial prefrontal cortex. Our results demonstrate that the development of suicidal behaviors in major depression is related to widespread but discrete volume reduction in several cortical and subcortical structures, fitting with the hypothesis that decreased cerebral volume in certain regions renders biological susceptibility to attempt suicide during depressive states.
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Affiliation(s)
- Jen-Ping Hwang
- Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
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133
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Abstract
OBJECTIVE To assess the frequency of suicidal ideation and suicide attempts in patients with Parkinson's disease. METHODS The Mini International Neuropsychiatric Interview (MINI), Beck Depression Inventory (BDI), and Hamilton Rating Scale for Depression (HAM-D) were administered to 90 consecutive, non-demented Parkinson's disease patients. They were also submitted to a complete neurologic examination which included brief cognitive batteries, the Mini Mental Status Exam, and Frontal Assessment Battery. We analyzed the scores of the section of the MINI related to the risk of suicide as well as the specific questions of BDI and HAM-D concerning suicidal ideation. RESULTS No patient had ever attempted suicide. According to MINI, suicidal ideation was present in 13 patients (14.4%) with Parkinson's disease. All instruments assessed the risk of suicide in a similar way. Suicidal ideation was associated only with lower age (P=.022), lower age of Parkinson's disease onset (P=.021), panic disorder (P=.004), social anxiety disorder (P=.007), and major depression (P<.001). Logistic regression analysis indicated that major depression was the main predictor of suicidal ideation. CONCLUSION Suicide attempts seem to be uncommon in Parkinson's disease, despite the fact that the rates of suicidal ideation are possibly elevated. Depression seems to be the most important predictor of suicidal ideation in Parkinson's disease.
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134
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Mann JJ, Arango VA, Avenevoli S, Brent DA, Champagne FA, Clayton P, Currier D, Dougherty DM, Haghighi F, Hodge SE, Kleinman J, Lehner T, McMahon F, Mościcki EK, Oquendo MA, Pandey GN, Pearson J, Stanley B, Terwilliger J, Wenzel A. Candidate endophenotypes for genetic studies of suicidal behavior. Biol Psychiatry 2009; 65:556-63. [PMID: 19201395 PMCID: PMC3271953 DOI: 10.1016/j.biopsych.2008.11.021] [Citation(s) in RCA: 263] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Revised: 10/21/2008] [Accepted: 11/12/2008] [Indexed: 12/12/2022]
Abstract
Twin, adoption, and family studies have established the heritability of suicide attempts and suicide. Identifying specific suicide diathesis-related genes has proven more difficult. As with psychiatric disorders in general, methodological difficulties include complexity of the phenotype for suicidal behavior and distinguishing suicide diathesis-related genes from genes associated with mood disorders and other suicide-associated psychiatric illness. Adopting an endophenotype approach involving identification of genes associated with heritable intermediate phenotypes, including biological and/or behavioral markers more proximal to genes, is an approach being used for other psychiatric disorders. Therefore, a workshop convened by the American Foundation for Suicide Prevention, the Department of Psychiatry at Columbia University, and the National Institute of Mental Health sought to identify potential target endophenotypes for genetic studies of suicidal behavior. The most promising endophenotypes were trait aggression/impulsivity, early-onset major depression, neurocognitive function, and cortisol social stress response. Other candidate endophenotypes requiring further investigation include serotonergic neurotransmission, second messenger systems, and borderline personality disorder traits.
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Affiliation(s)
- J John Mann
- Department of Psychiatry, NewYork State Psychiatric Institute/ColumbiaUniversity, 1051 Riverside Drive, New York, NY 10032, USA.
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