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Curry I, Trim RS, Brown SA, Hopfer CJ, Stallings MC, Wall TL. Positive expectancies mediate the association between sensation seeking and marijuana outcomes in at-risk young adults: A test of the acquired preparedness model. Am J Addict 2018; 27:10.1111/ajad.12754. [PMID: 29873863 PMCID: PMC6281840 DOI: 10.1111/ajad.12754] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 05/01/2018] [Accepted: 05/17/2018] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND OBJECTIVES The acquired preparedness model (APM) integrates personality trait research and psychosocial learning, which are theorized to ultimately increase risk for problematic substance use outcomes. METHODS The present study uses the APM to examine the potential mediational role of positive and negative expectancies on the relationship between impulsivity and two marijuana outcomes (ie, frequency of use and marijuana use disorder [MUD] symptom count) among an at-risk sample of young adults with history of antisocial behavior and substance use in adolescence and their siblings (n = 312). RESULTS Results suggest a significant indirect effect of sensation seeking on recent marijuana use through positive marijuana expectancies. There also was a significant indirect effect of sensation seeking on past-year MUD symptoms through positive expectancies. No significant indirect effects through negative expectancies were found for either outcome. DISCUSSION AND CONCLUSIONS Our findings are consistent with the APM and suggest that higher sensation seeking is related to increased positive beliefs about marijuana outcomes, which is related to higher marijuana use and more MUD symptoms. SCIENTIFIC SIGNIFICANCE These findings suggest that positive expectancies are an important risk factor for marijuana use and misuse, particularly for at-risk individuals with elevated rates of sensation seeking. Positive marijuana expectancies may be important to address in interventions for at-risk individuals. (Am J Addict 2018;XX:1-6).
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Affiliation(s)
- Inga Curry
- V.A. San Diego Healthcare System, La Jolla, United States
- Department of Psychiatry, University of California, San Diego, United States
| | - Ryan S. Trim
- V.A. San Diego Healthcare System, La Jolla, United States
- Department of Psychiatry, University of California, San Diego, United States
| | - Sandra A. Brown
- Department of Psychiatry, University of California, San Diego, United States
| | | | - Michael C. Stallings
- Institute for Behavioral Genetics, University of Colorado, Boulder, United States
| | - Tamara L. Wall
- V.A. San Diego Healthcare System, La Jolla, United States
- Department of Psychiatry, University of California, San Diego, United States
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Sadeh N, Wolf EJ, Logue MW, Lusk J, Hayes JP, McGlinchey RE, Milberg WP, Stone A, Schichman SA, Miller MW. Polygenic Risk for Externalizing Psychopathology and Executive Dysfunction in Trauma-Exposed Veterans. Clin Psychol Sci 2016; 4:545-558. [PMID: 27453802 PMCID: PMC4951156 DOI: 10.1177/2167702615613310] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The frequent co-occurrence of antisocial behavior and other disinhibited phenotypes reflects a highly heritable externalizing spectrum. We examined the molecular genetic basis of this spectrum by testing polygenic associations with psychopathology symptoms, impulsive traits, and cognitive functions in two samples of primarily military veterans (n =537, n =194). We also investigated whether polygenic risk for externalizing moderated the effects of trauma on these phenotypes. As hypothesized, polygenic risk positively predicted externalizing psychopathology and negatively predicted performance on inhibitory control tasks. Gene-by-environment effects were also evident, with trauma exposure predicting greater impulsivity and less working memory capacity, but only at high levels of genetic liability. As expected, polygenic risk was not associated with internalizing psychopathology or episodic memory performance. This is the first independent replication of the polygenic score as a measure of genetic predispositions for externalizing and provides preliminary evidence that executive dysfunction is a heritable vulnerability for externalizing psychopathology.
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Affiliation(s)
- Naomi Sadeh
- National Center for PTSD, Behavioral Science Division, VA Boston Healthcare System
- Department of Psychiatry, Boston University School of Medicine
| | - Erika J. Wolf
- National Center for PTSD, Behavioral Science Division, VA Boston Healthcare System
- Department of Psychiatry, Boston University School of Medicine
| | - Mark W. Logue
- Research Service, VA Boston Healthcare System, Boston, MA; Biomedical Genetics, Boston University School of Medicine, Boston, MA; Department of Biostatistics, Boston University School of Public Health
| | - Joanna Lusk
- National Center for PTSD, Behavioral Science Division, VA Boston Healthcare System
| | - Jasmeet P. Hayes
- National Center for PTSD, Behavioral Science Division, VA Boston Healthcare System
- Department of Psychiatry, Boston University School of Medicine
| | - Regina E. McGlinchey
- Translational Research Center for TBI and Stress Disorders and Geriatric Research, Educational and Clinical Center, VA Boston Healthcare System; Department of Psychiatry, Harvard Medical School
| | - William P. Milberg
- Translational Research Center for TBI and Stress Disorders and Geriatric Research, Educational and Clinical Center, VA Boston Healthcare System; Department of Psychiatry, Harvard Medical School
| | - Annjanette Stone
- Pharmacogenomics Analysis Laboratory, Research Service, Central Arkansas Veterans Healthcare System
| | - Steven A. Schichman
- Pharmacogenomics Analysis Laboratory, Research Service, Central Arkansas Veterans Healthcare System
| | - Mark W. Miller
- National Center for PTSD, Behavioral Science Division, VA Boston Healthcare System
- Department of Psychiatry, Boston University School of Medicine
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Brown MRG, Benoit JRA, Juhás M, Dametto E, Tse TT, MacKay M, Sen B, Carroll AM, Hodlevskyy O, Silverstone PH, Dolcos F, Dursun SM, Greenshaw AJ. fMRI investigation of response inhibition, emotion, impulsivity, and clinical high-risk behavior in adolescents. Front Syst Neurosci 2015; 9:124. [PMID: 26483645 PMCID: PMC4586270 DOI: 10.3389/fnsys.2015.00124] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 08/20/2015] [Indexed: 12/27/2022] Open
Abstract
High-risk behavior in adolescents is associated with injury, mental health problems, and poor outcomes in later life. Improved understanding of the neurobiology of high-risk behavior and impulsivity shows promise for informing clinical treatment and prevention as well as policy to better address high-risk behavior. We recruited 21 adolescents (age 14–17) with a wide range of high-risk behavior tendencies, including medically high-risk participants recruited from psychiatric clinics. Risk tendencies were assessed using the Adolescent Risk Behavior Screen (ARBS). ARBS risk scores correlated highly (0.78) with impulsivity scores from the Barratt Impulsivity scale (BIS). Participants underwent 4.7 Tesla functional magnetic resonance imaging (fMRI) while performing an emotional Go/NoGo task. This task presented an aversive or neutral distractor image simultaneously with each Go or NoGo stimulus. Risk behavior and impulsivity tendencies exhibited similar but not identical associations with fMRI activation patterns in prefrontal brain regions. We interpret these results as reflecting differences in response inhibition, emotional stimulus processing, and emotion regulation in relation to participant risk behavior tendencies and impulsivity levels. The results are consistent with high impulsivity playing an important role in determining high risk tendencies in this sample containing clinically high-risk adolescents.
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Affiliation(s)
- Matthew R G Brown
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada ; Department of Computing Science, University of Alberta Edmonton, AB, Canada
| | - James R A Benoit
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - Michal Juhás
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - Ericson Dametto
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - Tiffanie T Tse
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - Marnie MacKay
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - Bhaskar Sen
- Department of Computing Science, University of Alberta Edmonton, AB, Canada
| | - Alan M Carroll
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | | | | | - Florin Dolcos
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada ; Psychology Department, Neuroscience Program, and the Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign Urbana, IL, USA
| | - Serdar M Dursun
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
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O’Leary-Barrett M, Pihl RO, Artiges E, Banaschewski T, Bokde ALW, Büchel C, Flor H, Frouin V, Garavan H, Heinz A, Ittermann B, Mann K, Paillère-Martinot ML, Nees F, Paus T, Pausova Z, Poustka L, Rietschel M, Robbins TW, Smolka MN, Ströhle A, Schumann G, Conrod PJ. Personality, Attentional Biases towards Emotional Faces and Symptoms of Mental Disorders in an Adolescent Sample. PLoS One 2015; 10:e0128271. [PMID: 26046352 PMCID: PMC4457930 DOI: 10.1371/journal.pone.0128271] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 04/23/2015] [Indexed: 01/03/2023] Open
Abstract
Objective To investigate the role of personality factors and attentional biases towards emotional faces, in establishing concurrent and prospective risk for mental disorder diagnosis in adolescence. Method Data were obtained as part of the IMAGEN study, conducted across 8 European sites, with a community sample of 2257 adolescents. At 14 years, participants completed an emotional variant of the dot-probe task, as well two personality measures, namely the Substance Use Risk Profile Scale and the revised NEO Personality Inventory. At 14 and 16 years, participants and their parents were interviewed to determine symptoms of mental disorders. Results Personality traits were general and specific risk indicators for mental disorders at 14 years. Increased specificity was obtained when investigating the likelihood of mental disorders over a 2-year period, with the Substance Use Risk Profile Scale showing incremental validity over the NEO Personality Inventory. Attentional biases to emotional faces did not characterise or predict mental disorders examined in the current sample. Discussion Personality traits can indicate concurrent and prospective risk for mental disorders in a community youth sample, and identify at-risk youth beyond the impact of baseline symptoms. This study does not support the hypothesis that attentional biases mediate the relationship between personality and psychopathology in a community sample. Task and sample characteristics that contribute to differing results among studies are discussed.
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Affiliation(s)
| | - Robert O. Pihl
- Department of Psychology McGill University, Montreal, Quebec, Canada
| | - Eric Artiges
- Institut National de la Santé et de la Recherche Médicale, INSERM CEA Unit 1000 “Imaging & Psychiatry”, University Paris Sud, Orsay, Paris, France
- AP-HP Department of Adolescent Psychopathology and Medicine, Maison de Solenn, University Paris Descartes, Paris, France
| | - Tobias Banaschewski
- Department of Child and Adolescent Psychiatry and Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Arun L. W. Bokde
- Trinity College Institute of Neuroscience and Discipline of Psychiatry, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | | | - Herta Flor
- Central Institute of Mental Health, Mannheim, Germany
- Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Vincent Frouin
- Neurospin, Commissariat à l'Energie Atomique et aux Energies Alternatives, Paris, France
| | - Hugh Garavan
- Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- Departments of Psychiatry and Psychology, University of Vermont, Burlington, Vermont, United States of America
| | - Andreas Heinz
- Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charité –Universitätsmedizin Berlin, Berlin, Germany
| | - Bernd Ittermann
- Physikalisch-Technische Bundesanstalt (PTB), Braunschweig und Berlin, Berlin, Germany
| | - Karl Mann
- Central Institute of Mental Health, Mannheim, Germany
- Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Marie-Laure Paillère-Martinot
- Institut National de la Santé et de la Recherche Médicale, INSERM CEA Unit 1000 “Imaging & Psychiatry”, University Paris Sud, Orsay, Paris, France
- AP-HP Department of Adolescent Psychopathology and Medicine, Maison de Solenn, University Paris Descartes, Paris, France
| | - Frauke Nees
- Central Institute of Mental Health, Mannheim, Germany
- Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Tomas Paus
- Rotman Research Institute, University of Toronto, Toronto, Ontario, Canada
- School of Psychology, University of Nottingham, Nottingham, United Kingdom
- Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Zdenka Pausova
- The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Luise Poustka
- Department of Child and Adolescent Psychiatry and Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Marcella Rietschel
- Central Institute of Mental Health, Mannheim, Germany
- Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Trevor W. Robbins
- Behavioural and Clinical Neurosciences Institute, Department of Experimental Psychology, University of Cambridge, Cambridge, United Kingdom
| | - Michael N. Smolka
- Department of Psychiatry and Psychotherapy, and Neuroimaging Center, Technische Universität Dresden, Dresden, Germany
| | - Andreas Ströhle
- Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charité –Universitätsmedizin Berlin, Berlin, Germany
| | - Gunter Schumann
- MRC Social, Genetic and Developmental Psychiatry (SGDP) Centre, Institute of Psychiatry, King’s College London, London, United Kingdom
| | - Patricia J. Conrod
- Department of Psychological Medicine and Psychiatry, Institute of Psychiatry, King’s College London, United Kingdom
- Department of Psychiatry, Université de Montreal, CHU Ste Justine Hospital, Montreal, Quebec, Canada
- * E-mail:
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Brown MRG, Benoit JRA, Juhás M, Lebel RM, MacKay M, Dametto E, Silverstone PH, Dolcos F, Dursun SM, Greenshaw AJ. Neural correlates of high-risk behavior tendencies and impulsivity in an emotional Go/NoGo fMRI task. Front Syst Neurosci 2015; 9:24. [PMID: 25805975 PMCID: PMC4354310 DOI: 10.3389/fnsys.2015.00024] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 02/12/2015] [Indexed: 11/13/2022] Open
Abstract
Improved neuroscientific understanding of high-risk behaviors such as alcohol binging, drug use, and unsafe sex will lead to therapeutic advances for high-risk groups. High-risk behavior often occurs in an emotionally-charged context, and behavioral inhibition and emotion regulation play important roles in risk-related decision making. High impulsivity is an important potential contributor to high-risk behavior tendencies. We explored the relationships between high-risk behavior tendencies, impulsivity, and fMRI brain activations in an emotional Go/NoGo task. This task presented emotional distractor pictures (aversive vs. neutral) simultaneously with Go/NoGo stimuli (square vs. circle) that required a button press or withholding of the press, respectively. Participants' risk behavior tendencies were assessed with the Cognitive Appraisal of Risky Events (CARE) scale. The Barratt Impulsivity Scale 11 (BIS) was used to assess participant impulsivity. Individuals with higher CARE risk scores exhibited reduced activation related to response inhibition (NoGo-Go) in right orbital frontal cortex (OFC) and ventromedial prefrontal cortex. These regions did not show a significant relationship with impulsivity scores. Conversely, more impulsive individuals showed reduced emotion-related activity (aversive-neutral distractors) in dorsomedial prefrontal cortex, perigenual anterior cingulate cortex, and right posterior OFC. There were distinct neural correlates of high-risk behavior tendency and impulsivity in terms of brain activity in the emotional Go/NoGo task. This dissociation supports the conception of high-risk behavior tendency as a distinct construct from that of impulsivity. Our results suggest that treatment for high-risk behavior may be more effective with a nuanced approach that does not conflate high impulsivity necessarily with high-risk behavior tendencies.
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Affiliation(s)
- Matthew R G Brown
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - James R A Benoit
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - Michal Juhás
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - R M Lebel
- Department of Biomedical Engineering, University of Alberta Edmonton, AB, Canada
| | - Marnie MacKay
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - Ericson Dametto
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | | | - Florin Dolcos
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada ; Department of Psychology, Neuroscience Program, and the Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign Urbana-Champaign, IL, USA
| | - Serdar M Dursun
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
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Farr OM, Hu S, Zhang S, Li CSR. Decreased saliency processing as a neural measure of Barratt impulsivity in healthy adults. Neuroimage 2012; 63:1070-7. [PMID: 22885245 DOI: 10.1016/j.neuroimage.2012.07.049] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 06/27/2012] [Accepted: 07/23/2012] [Indexed: 11/13/2022] Open
Abstract
Cognitive control is necessary to navigating through an uncertain world. With the stop signal task (SST), we measure how cognitive control functions in a controlled environment. There has been conflicting evidence on whether trait impulsivity might reflect differences in cognitive control during the SST. While some studies find that trait impulsivity relates to measures of response inhibition, such as the stop signal reaction time (SSRT), other studies do not. Here, in 92 young adult participants (58 females; age 25 ± 4 years), we examined whether trait impulsivity, measured by the Barratt impulsivity scale (BIS-11), is associated with differences in performance and regional brain activations for the component processes of cognitive control during the SST. Across participants, trait impulsivity showed a trend-level correlation with SSRT (F(1.90)=3.18, p<.07; Pearson regression). In simple regressions, activation of the right anterior dorsal insula and middle frontal cortex (MFC) during stop as compared to go trials negatively correlated with motor and non-planning impulsivity score. Using the generalized form of psychophysiological interaction (gPPI), we showed that functional connectivity of the right insula and MFC with the left dorsolateral prefrontal cortex and bilateral visual areas were also negatively correlated with impulsivity. None of the other component processes of cognitive control, including response inhibition, error processing, post-error slowing, were significantly related to Barratt impulsivity. These results suggest that trait impulsivity as measured by BIS-11 may have distinct effects on saliency processing in adult individuals.
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Affiliation(s)
- Olivia M Farr
- Interdepartmental Neuroscience Program, Yale University School of Medicine, New Haven, CT 06520, USA.
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Swann AC. Antisocial personality and bipolar disorder: interactions in impulsivity and course of illness. ACTA ACUST UNITED AC 2011; 1:599-610. [PMID: 22235235 DOI: 10.2217/npy.11.69] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antisocial personality disorder (ASPD) and bipolar disorder are both characterized by impulsive behavior, increased incarceration or arrest, addictive disorders and suicidal behavior. These characteristics appear more severe in the combined disorders. Individuals with ASPD who also have bipolar disorder have higher rates of addictive disorders and suicidal behavior and are more impulsive, as measured by questionnaires or behavioral laboratory tests. Those with bipolar disorder who have ASPD have higher rates of addictive, criminal and suicidal behavior, earlier onset of bipolar disorder with a more recurrent and predominately manic course and increased laboratory-measured, but not questionnaire-rated, impulsivity. These characteristics may result in part from differential impulsivity mechanisms in the two disorders, with bipolar disorder driven more by excessive catecholamine sensitivity and ASPD by deficient serotonergic function.
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Affiliation(s)
- Alan C Swann
- Department of Psychiatry, Houston Health Science Center, 1300 Moursund Street, Room 270, Houston, TX 77030, USA
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Eisenberg DTA, MacKillop J, Modi M, Beauchemin J, Dang D, Lisman SA, Lum JK, Wilson DS. Examining impulsivity as an endophenotype using a behavioral approach: a DRD2 TaqI A and DRD4 48-bp VNTR association study. Behav Brain Funct 2007; 3:2. [PMID: 17214892 PMCID: PMC1781951 DOI: 10.1186/1744-9081-3-2] [Citation(s) in RCA: 196] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2006] [Accepted: 01/10/2007] [Indexed: 01/26/2023] Open
Abstract
Background Research on the genetic basis for impulsivity has revealed an array of ambiguous findings. This may be a result of limitations to self-report assessments of impulsivity. Behavioral measures that assess more narrowly defined aspects of impulsivity may clarify genetic influences. This study examined the relationship between possession of the DRD2 TaqI A and DRD4 48 bp VNTR genetic polymorphisms and performance on a behavioral measure of impulsivity, the delay discounting task (DDT), and three traditional self-report measures. Methods 195 individuals (42% male) were recruited from a university campus and were assessed in small group sessions using personal computers. Genotyping was conducted using previously established protocols. For the DRD2 TaqI A locus, individuals were designated as possessing at least one copy of the A1 allele (A1+) or not (A1-), and for the DRD4 48-bp VNTR locus, individuals were designated as having at least one long allele (7 repeats or longer, L+) or not (L-). Principal analyses used multiple univariate factorial 2 (A1+/A1-) × 2 (L+/L-) analyses of variance. Results A significant main effect of A1+ status on DDT performance was evident (p = .006) as well as a significant interaction effect (p = .006) between both genes. No other significant effects were evident on the self-report measures, with the exception of a trend toward an interaction effect on the Sensation Seeking Scale. Exploratory analyses suggested that the significant effects were not a function of population stratification or gender. Discussion These data suggest that the DRD2 TaqI A and DRD4 VNTR polymorphisms influence impulsivity as measured with a delay discounting task. Specifically, these findings suggest that an interaction between the functional effects of the two unlinked genotypes results in significant difference in the balance of mesolimbic dopaminergic activation relative to frontal-parietal activation. However, these findings are also the first in this area and must be replicated. Conclusion These findings suggest a meaningful interaction between the DRD2 TaqI A and DRD4 VNTR polymorphisms in the expression of impulsivity and provide initial support for the utility of using behavioral measures for clarifying genetic influences on impulsivity.
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Affiliation(s)
- Dan TA Eisenberg
- State University of New York at Binghamton, Biology Department, Binghamton, NY, USA
- State University of New York at Binghamton, Anthropology Department, Binghamton, NY, USA
- State University of New York at Binghamton, Laboratory of Evolutionary Anthropology and Health, Binghamton, NY, USA
| | - James MacKillop
- State University of New York at Binghamton, Psychology Department, Binghamton, NY, USA
- Center for Alcohol and Addiction Studies, Brown University, Providence, RI, USA
| | - Meera Modi
- State University of New York at Binghamton, Biology Department, Binghamton, NY, USA
| | - Joshua Beauchemin
- State University of New York at Binghamton, Laboratory of Evolutionary Anthropology and Health, Binghamton, NY, USA
| | - David Dang
- State University of New York at Binghamton, Laboratory of Evolutionary Anthropology and Health, Binghamton, NY, USA
| | - Stephen A Lisman
- State University of New York at Binghamton, Psychology Department, Binghamton, NY, USA
| | - J Koji Lum
- State University of New York at Binghamton, Biology Department, Binghamton, NY, USA
- State University of New York at Binghamton, Anthropology Department, Binghamton, NY, USA
- State University of New York at Binghamton, Laboratory of Evolutionary Anthropology and Health, Binghamton, NY, USA
| | - David S Wilson
- State University of New York at Binghamton, Biology Department, Binghamton, NY, USA
- State University of New York at Binghamton, Anthropology Department, Binghamton, NY, USA
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