Parents of schizophrenics show more transactional style deviance in diverse situations than do other parents. In a sample of families of nonschizophrenic outpatient adolescents, a manual for scoring such deviance on stories told for seven TAT cards was developed. This scoring system was shown to be composed of six meaningful factors. When this system was applied to the TAT's of parents of offspring with a variety of psychiatric diagnoses, a total deviance score did not discriminate among the parents. High scores on two particular factors were found only in parents of hospitalized schizophrenics, but four factors were nondiscriminating. Parents of young adults with schizophrenia spectrum disorders were more likely to show high scores on at least one of these six factors than other parents. Considering the scores of mothers and fathers together yielded the best discrimination of parents of schizophrenia spectrum disorders from other parents.