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Estimated verbal IQ and the odds of problem gambling: a population-based study

  • D. Rai (a1) (a2), W. Hall (a3) (a4), P. Bebbington (a5), P. Skapinakis (a1), A. Hassiotis (a5), S. Weich (a6), H. Meltzer (a7), P. Moran (a8), T. Brugha (a7), A. Strydom (a5) and M. Farrell (a9)...



The neurocognitive deficits and other correlates of problem gambling are also observable in individuals with lower cognitive abilities, suggesting that a low IQ may be a determinant of problem gambling. There has been very little research into this possibility. This study aimed to investigate the characteristics associated with problem gambling in a large population-based study in England, with a particular focus on IQ.


The Adult Psychiatric Morbidity Survey (APMS) 2007 comprised detailed interviews with 7403 individuals living in private households in England. Problem gambling was ascertained using a questionnaire based on DSM-IV criteria. Verbal IQ was estimated using the National Adult Reading Test (NART). Confounders included socio-economic and demographic factors, common mental disorders, impulsivity, smoking, and hazardous drug and alcohol use.


More than two-thirds of the population reported engaging in some form of gambling in the previous year, but problem gambling was rare [prevalence 0.7%, 95% confidence interval (CI) 0.5–1.0]. The odds of problem gambling doubled with each standard deviation drop in estimated verbal IQ [adjusted odds ratio (OR) 2.1, 95% CI 1.3–3.4, p = 0.003], after adjusting for other characteristics associated with problem gambling including age, sex, socio-economic factors, drug and alcohol dependence, smoking, impulsivity and common mental disorders. There was no strong relationship observed between IQ and non-problem gambling.


People with lower IQs may be at a higher risk of problem gambling. Further work is required to replicate and study the mechanisms behind these findings, and may aid the understanding of problem gambling and inform preventative measures and interventions.


Corresponding author

* Address for correspondence: Dr D. Rai, Centre for Mental Health, Addiction and Suicide Research, School of Social and Community Medicine, University of Bristol, Oakfield House, Oakfield Grove, Clifton, Bristol BS8 2BN, UK. (Email:


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Afifi, TO, Cox, BJ, Martens, PJ, Sareen, J, Enns, MW (2010). Demographic and social variables associated with problem gambling among men and women in Canada. Psychiatry Research 178, 395400.
Ali, A, Ambler, G, Strydom, A, Rai, D, Cooper, C, McManus, S, Weich, S, Meltzer, H, Dein, S, Hassiotis, A (2013). The relationship between happiness and intelligent quotient: the contribution of socio-economic and clinical factors. Psychological Medicine 43, 13031312.
APA (2000). Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision. DSM-IV-TR. American Psychiatric Association: Washington, DC.
Bakken, IJ, Gotestam, KG, Grawe, RW, Wenzel, HG, Oren, A (2009). Gambling behavior and gambling problems in Norway 2007. Scandinavian Journal of Psychology 50, 333339.
Bondolfi, G, Jermann, F, Ferrero, F, Zullino, D, Osiek, C (2008). Prevalence of pathological gambling in Switzerland after the opening of casinos and the introduction of new preventive legislation. Acta Psychiatrica Scandinavica 117, 236239.
Bowden-Jones, H, George, S (2011). Gambling addiction. British Medical Journal 343, d7789.
Brewer, JA, Potenza, MN, Desai, RA (2010). Differential associations between problem and pathological gambling and psychiatric disorders in individuals with and without alcohol abuse or dependence. CNS Spectrums 15, 3344.
Bright, P, Jaldow, E, Kopelman, MD (2002). The National Adult Reading Test as a measure of premorbid intelligence: a comparison with estimates derived from demographic variables. Journal of the International Neuropsychological Society 8, 847854.
Cox, BJ, Yu, N, Afifi, TO, Ladouceur, R (2005). A national survey of gambling problems in Canada. Canadian Journal of Psychiatry 50, 213217.
Crawford, JR, Deary, IJ, Starr, J, Whalley, LJ (2001). The NART as an index of prior intellectual functioning: a retrospective validity study covering a 66-year interval. Psychological Medicine 31, 451458.
Dixon, MR, Marley, J, Jacobs, EA (2003). Delay discounting by pathological gamblers. Journal of Applied Behavioral Analysis 36, 449458.
Emond, A, Doerner, R, Griffiths, MD (2011). Avon Longitudinal Study of Parents and Children (ALSPAC). Gambling behaviour in adolescents aged 17 years: summary of findings ( Accessed 1 December 2012.
Forbush, KT, Shaw, M, Graeber, MA, Hovick, L, Meyer, VJ, Moser, DJ, Bayless, J, Watson, D, Black, DW (2008). Neuropsychological characteristics and personality traits in pathological gambling. CNS Spectrums 13, 306315.
Gotestam, KG, Johansson, A (2003). Characteristics of gambling and problematic gambling in the Norwegian context: a DSM-IV-based telephone interview study. Addictive Behaviors 28, 189197.
Goudriaan, AE, Oosterlaan, J, deBeurs, E, van den Brink, W (2004). Pathological gambling: a comprehensive review of biobehavioral findings. Neuroscience and Biobehavioral Reviews 28, 123141.
Goudriaan, AE, Oosterlaan, J, deBeurs, E, van den Brink, W (2005). Decision making in pathological gambling: a comparison between pathological gamblers, alcohol dependents, persons with Tourette syndrome, and normal controls. Cognitive Brain Research 23, 137151.
Goudriaan, AE, Oosterlaan, J, deBeurs, E, van den Brink, W (2006). Neurocognitive functions in pathological gambling: a comparison with alcohol dependence, Tourette syndrome and normal controls. Addiction 101, 534547.
Kaare, PR, Mottus, R, Konstabel, K (2009). Pathological gambling in Estonia: relationships with personality, self-esteem, emotional states and cognitive ability. Journal of Gambling Studies 25, 377390.
Kessler, RC, Hwang, I, LaBrie, R, Petukhova, M, Sampson, NA, Winters, KC, Shaffer, HJ (2008). DSM-IV pathological gambling in the National Comorbidity Survey Replication. Psychological Medicine 38, 13511360.
Lewis, G, Pelosi, AJ, Araya, R, Dunn, G (1992). Measuring psychiatric disorder in the community: a standardized assessment for use by lay interviewers. Psychological Medicine 22, 465486.
Lobbestael, J, Leurgans, M, Arntz, A (2011). Inter-rater reliability of the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID I) and Axis II Disorders (SCID II). Clinical Psychology and Psychotherapy 18, 7579.
Lorains, FK, Cowlishaw, S, Thomas, SA (2011). Prevalence of comorbid disorders in problem and pathological gambling: systematic review and meta-analysis of population surveys. Addiction 106, 490498.
Lubinski, D (2009). Cognitive epidemiology: with emphasis on untangling cognitive ability and socioeconomic status. Intelligence 37, 625633.
Malgady, RG, Rogler, LH, Tryon, WW (1992). Issues of validity in the Diagnostic Interview Schedule. Journal of Psychiatric Research 26, 5967.
Mathias, JL, Bowden, SC, Barrett-Woodbridge, M (2007). Accuracy of the Wechsler Test of Adult Reading (WTAR) and National Adult Reading Test (NART) when estimating IQ in a healthy Australian sample. Australian Psychologist 42, 4956.
McManus, S, Meltzer, H, Brugha, T, Bebbington, P, Jenkins, R (eds) (2009). Adult Psychiatric Morbidity in England 2007: Results of a Household Survey. The NHS Information Centre: Leeds, UK.
Morasco, BJ, Petry, NM (2006). Gambling problems and health functioning in individuals receiving disability. Disability and Rehabilitation 28, 619623.
Nelson, HE (1991). National Adult Reading Test (NART). NFER-NELSON: Windsor.
Petry, NM, Stinson, FS, Grant, BF (2005). Comorbidity of DSM-IV pathological gambling and other psychiatric disorders: results from the National Epidemiologic Survey on Alcohol and Related Conditions. Journal of Clinical Psychiatry 66, 564574.
Reith, G (2006). Research on the Social Impacts of Gambling. Scottish Executive Social Research (ScotCen), Edinburgh.
Saunders, JB, Aasland, OG, Babor, TF, de la Fuente, JR, Grant, M (1993). Development of the Alcohol Use Disorders Identification Test (AUDIT): WHO Collaborative Project on Early Detection of Persons with Harmful Alcohol Consumption – II. Addiction 88, 791804.
Shaffer, HJ, Martin, R (2011). Disordered gambling: etiology, trajectory, and clinical considerations. Annual Review of Clinical Psychology 7, 483510.
Shamosh, NA, Deyoung, CG, Green, AE, Reis, DL, Johnson, MR, Conway, AR, Engle, RW, Braver, TS, Gray, JR (2008). Individual differences in delay discounting: relation to intelligence, working memory, and anterior prefrontal cortex. Psychological Science 19, 904911.
Spinks, R, McKirgan, LW, Arndt, S, Caspers, K, Yucuis, R, Pfalzgraf, CJ (2009). IQ estimate smackdown: comparing IQ proxy measures to the WAIS-III. Journal of the International Neuropsychological Society 15, 590596.
Stockwell, T, Sitharthan, T, McGrath, D, Lang, E (1994). The measurement of alcohol dependence and impaired control in community samples. Addiction 89, 167174.
Tavares, H, Carneiro, E, Sanches, M, Pinsky, I, Caetano, R, Zaleski, M, Laranjeira, R (2010). Gambling in Brazil: lifetime prevalences and socio-demographic correlates. Psychiatry Research 180, 3541.
Tourangeau, R, Rips, LJ, Rasinski, KA (2000). The Psychology of Survey Response. Cambridge University Press: Cambridge, U.K.
Verdejo-Garcia, A, Lawrence, AJ, Clark, L (2008). Impulsivity as a vulnerability marker for substance-use disorders: review of findings from high-risk research, problem gamblers and genetic association studies. Neuroscience and Biobehavioral Reviews 32, 777810.
Victorian Competition and Efficiency Commission (2012). Counting the Cost: Inquiry into the Costs of Problem Gambling: a draft report for further consultation and input. Victorian Competition and Efficiency Commission: Melbourne.
Walker, DM (2007). Problems in quantifying the social costs and benefits of gambling. American Journal of Economics and Sociology 66, 609645.
Wardle, H, Moody, A, Spence, S, Orford, J, Volberg, R, Jotangia, D, Griffiths, M, Hussey, D, Dobbie, F; National Centre for Social Research, Gambling Commission (2011). British Gambling Prevalence Survey 2010. National Centre for Social Research. The Stationery Office: London.
Welte, JW, Barnes, GM, Wieczorek, WF, Tidwell, MC, Parker, JC (2004). Risk factors for pathological gambling. Addictive Behaviors 29, 323335.
WHO (1993). The ICD-10 Classification of Mental and Behavioural Disorders: Diagnostic Criteria for Research. World Health Organization: Geneva.
Xian, H, Shah, KR, Phillips, SM, Scherrer, JF, Volberg, R, Eisen, SA (2008). Association of cognitive distortions with problem and pathological gambling in adult male twins. Psychiatry Research 160, 300307.


Estimated verbal IQ and the odds of problem gambling: a population-based study

  • D. Rai (a1) (a2), W. Hall (a3) (a4), P. Bebbington (a5), P. Skapinakis (a1), A. Hassiotis (a5), S. Weich (a6), H. Meltzer (a7), P. Moran (a8), T. Brugha (a7), A. Strydom (a5) and M. Farrell (a9)...


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