MAGICAL IDEATION AND SOCIAL ANHEDONIA AS PREDICTORS OF PSYCHOSIS PRONENESS - A PARTIAL REPLICATION

The authors compared college students identified by high scores on the Magical Ideation Scale (M. Eckblad & L. J. Chapman, 1983) and the Rev ised Social Anhedonia Scale (MagSoc; n = 28; M. Eckblad, L. J. Chapman , J. P. Chapman, & M. Mishlove, 1982) with control participants (n = 2 0) at a 10-year follow-up assessment in an attempt to replicate L. J. Chapman, J. P. Chapman, T.R. Kwapil, M. Eckblad, and M. C. Zinser's (1 994) report of heightened psychosis proneness in MagSoc individuals. T he MagSoc group exceeded the control group on severity of psychotic-li ke experiences; ratings of schizotypal, paranoid, and borderline perso nality disorder symptoms; and rates of mood and substance use disorder s. Two of the MagSoc participants but none of the control participants developed psychosis during the follow-up period (a nonsignificant dif ference). Consistent with L. J. Chapman et al.'s findings, the groups did not differ on rates of personality disorders or relatives with psy chosis.