Sindrome amotivacional: • Himmelstein, J.L. The Strange Career of Marihuana: Politics and Ideology of Drug Control in America. Westport, CT: Greenwood Press, 1983. * Mellinger, G.D. et al. “Drug Use, Academic Performance, and Career Indecision: Longitudinal Data in Search of a Model.” Longitudinal Research on Drug Use: Empirical Findings and Methodological Issues. Ed. D.B. Kandel. Washington, DC: Psychological Association, 1978. 157-177. * Pope, H.G. et al., “Drug Use and Life Style Among College Undergraduates in 1989: A Comparison With 1969 and 1978,” American Journal of Psychiatry 147 (1990): 998-1001.
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