The high prevalence of substance use, e.g., alcohol and illegal and nonprescribed drugs, in schizophrenia is widely recognized. One explanation for this high prevalence is that substance use may be a self-initiated method for managing symptoms. To test whether the intake of four substances--alcohol,
Individual differences in psychopathology, personality, and nicotine responsivity and their biological bases are evaluated as mechanisms potentially mediating smoking heritability. Smokers are more likely to be high in neurotic traits (e.g., depression, anxiety, anger) and in social alienation