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Behavior Modification
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Behavioral Signs of Schizoidia and Schizotypy in the Biological Parents of Social Anhedonics

Lindsay C. Emmerson

University of California, LCEmmerson{at}msn.com

Sarah L. Miller

University of Alabama

Jack J. Blanchard

University of Maryland

A community sample of 88 putative schizotypes (48 social anhedonics, 40 controls), aged 18 to 19 years, and their biological parents (42 mothers of social anhedonics, 37 mothers of controls; 24 fathers of social anhedonics, 20 fathers of controls) receive videotaped diagnostic evaluations that serve as the basis for ratings of behavioral signs of schizoidia and schizotypy. Proband social anhedonics exhibit more atypical interpersonal behaviors characteristic of schizoid and schizotypal personality disorders than controls. Mothers of social anhedonics display more atypical interpersonal behaviors characteristic of schizotypal personality disorder than mothers of controls. In contrast, clinical symptom ratings of schizotypy do not differentiate mothers of social anhedonics from mothers of controls. Meaningful, though not statistically significant, effects are observed for behavioral sign ratings in the smaller sample of fathers of social anhedonics. Results provide preliminary support for the familiality of atypical interpersonal behavior in social anhedonics.

Key Words: schizotypy • anhedonia • schizophrenia • behavior • interpersonal • family

This version was published on July 1, 2009

Behavior Modification, Vol. 33, No. 4, 452-473 (2009)
DOI: 10.1177/0145445509336431
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