Symptomatology and neuropsychological functioning in cannabis using subjects at ultra-high risk for developing psychosis and healthy controls

References

• Yung AR, Philips LJ, Yuen HP . Psychosis prediction: 12-month follow up of a high-risk (“prodromal”) group. Schizophr Res 2003;60:21–32.
   PubMed Web of Science ®Google Scholar
• Murray RM, Morrison PD, Henquet C, Di Forti M. Cannabis, the mind and society: the hash realities. Neuroscience 2007;8:885–894.
   PubMed Web of Science ®Google Scholar
• Linszen DH, Dingemans PM, Lenior ME. Cannabis abuse and the course of recent-onset schizophrenic disorders. Arch Gen Psychiatry 1994;51:273–279.
   PubMed Web of Science ®Google Scholar
• Kristenen K, Cadenhead KS. Cannabis abuse and risk for psychosis in a prodromal sample. Psychiatr Res 2007;151:151–154.
   PubMed Web of Science ®Google Scholar
• Philips LJ, Curry C, Yung AR, Yuen HP, Adlard S, McGorry PD. Cannabis use is not associated with the development of psychosis in an ‘ultra’ high risk group. Aust N Z J Psychiatry 2002;36:800–806.
   PubMed Web of Science ®Google Scholar
• Moore THM, Zammit S, Lingford-Hughes A . Cannabis use and risk of psychotic or affective mental health outcomes: a systematic review. Lancet 2007;370:319–328.
   PubMed Web of Science ®Google Scholar
• Hall W, Degenhardt L, Teesson M. Cannabis use and psychotic disorders: an update. Drug Alcohol Rev 2004;23:433–443.
   PubMed Web of Science ®Google Scholar
• Henquet C, Krabbendam L, Spauwen J . Prospective cohort study of cannabis use, predisposition for psychosis, and psychotic symptoms in young people. Br Med J 2005;330:11.
   PubMed Web of Science ®Google Scholar
• Caton CLM, Drake RE, Hasin DS . Differences between early phase primary psychotic disorders with concurrent substance use and substance induced psychoses. Arch Gen Psychiatry 2005;62:137–145.
   PubMed Web of Science ®Google Scholar
• Margolese HC, Malchy L, Negrete JC, Tempier R, Gill K. Drug and alcohol use among patients with schizophrenia and related psychoses: levels and consequences. Schizophr Res 2004;67:157–166.
   PubMed Web of Science ®Google Scholar
• Stefanis NC, Delespaul P, Henquet C, Bakoula C, Stefanis CN, Van Os J. Early adolescent cannabis exposure and positive and nega tive dimensions of psychosis. Addiction 2004;99:1333–1341.
   PubMed Web of Science ®Google Scholar
• Aleman A, Hijman R, de Haan EHF, Kahn RS. Memory impairment in schizophrenia: a meta-analysis. Am J Psychiatry 1999;156:1358–1366.
   PubMed Web of Science ®Google Scholar
• Banaschewski T, Schulz E, Martin M, Remschmidt H. Cognitive functions and psychopathological symptoms in early-onset schizophrenia. Eur Child Adolesc Psychiatry 2000;9:11–20.
   PubMed Web of Science ®Google Scholar
• Hijman R, Scheepers F, Staal W. (2003). Het Schizofrenisyndroom. In: Eling P, de Haan E, Hijman R, Schmand (eds). Cognitive Neuropsychiatrie (pp. 214–250). Boom, Amsterdam. The Schizophrenia syndrome: Symptomatology, cognitive, neurobiological and neurochemical correlates. Dutch.
   Google Scholar
• Nieuwenstein MR, Aleman A, de Haan EHF. Relationship between symptom dimensions and neurocognitive functioning in schizophrenia: a meta-analysis of WCST and CPT studies. J Psychiatr Res 2001;35:119–125.
   PubMed Web of Science ®Google Scholar
• Block RI, Ghoneim MM. Effects of chronic marijuana use on human cognition. Psychopharmacology 1993;110:219–228.
   PubMed Web of Science ®Google Scholar
• Solowij N, Stephens RS, Roffman RA . Cognitive functioning of long term heavy cannabis users seeking treatment. JAMA 2002;287:1123–1131.
   PubMed Web of Science ®Google Scholar
• Jockers-Scherubl MC, Wolf T, Radzei N . Cannabis induces different cognitive changes in schizophrenic patients and in healthy controls. Prog Neuropsychopharmacol Biol Psychiatry 2007;31:1054–1063.
   PubMed Web of Science ®Google Scholar
• Pukrop R, Ruhrmann S, Schultze-Lutter F, Bechdolf A, Brockhaus-Dumke A, Klosterkotter J. Neurocognitive indicators for a conversion to psychosis: comparison of patients in a potentially initial prodromal state who did or did not convert to a psychosis. Schizophr Res 2007;92:116–125.
   PubMed Web of Science ®Google Scholar
• Klosterkotter J, Hellmich M, Eckhard M, Steinmeyer EM, Schultze-Lutter F. Diagnosing schizophrenia in the initial prodromal phase. Arch Gen Psychiatry 2001;58:158–164.
   PubMed Web of Science ®Google Scholar
• Kessler RC, Ustun TB. The World Mental Health (WMH) Survey Initiative Version of the World Health Organization (WHO) Composite International Diagnostic Interview (CIDI). Int J Methods Psychiatr Res 2004;13:93–121.
   PubMed Web of Science ®Google Scholar
• Miller TJ, McGlashan TH, Rosen JL, Somjee L, Markovich PJ, Stein K. Prospective diagnosis of the initial prodrome for schizophrenia based on the structured interview for prodromal syndromes: preliminary evidence of interrater reliability and predictive validity. Am J Psychiatry 2003;159:863–865.
   Web of Science ®Google Scholar
• Lezak MD. Neuropsychological assessment. New York: Oxford University Press, 1995.
   Google Scholar
• Morrison G, Sharkey V, Allardyce J, Kelly RC, McCreadie RG. Nithsdale Schizophrenia Surveys 21: a longitudinal study of National Adult Reading Test stability. Psychol Med 2000;30:717–720.
   PubMed Web of Science ®Google Scholar