Communication deviance in families of schizophrenic and manic patients.

Levels of communication deviance (CD) distinguish parents of schizophrenic patients from parents of nonpsychotic patients, but the prevalence of intrafamilial CD in other psychotic disorders has not been examined. Levels of CD were compared across biological parents of schizophrenic (n = 39) and bipolar manic (n = 16) patients and across patients themselves. CD ratings were based on Thematic Apperception Test protocols (parents only) and family interactions (parents and patients). Total levels of CD did not distinguish between groups of parents or patients. However, instances of odd word usage were more frequent among parents of manic patients than among parents of schizophrenic patients on both CD measures. Also, during the interaction task, odd word usage was more frequent among manic patients, whereas schizophrenic patients made more ambiguous references. Results suggest that high levels of intrafamilial CD are not unique to schizophrenia.

Can communication deviance be measured in a family problem-solving interaction?

Communication deviance (CD) refers to confusing and fragmented communication that prevents family members from attaining a shared focus of attention and meaning. Levels of communication deviance based on individual parental projective test protocols--Thematic Apperception Test (TAT) and Rorschach--have repeatedly been found to be higher in parents of schizophrenic offspring than in parents of normal or nonpsychotic offspring. CD has also been measured in family transactions in which parents and their offspring interact with one another around a projective test stimulus, the Consensus Rorschach. There have been relatively few attempts to measure specific CD codes in familial interaction that is not initiated around an ambiguous visual stimulus. The present article examines the reliability and construct validity of an interactional measure (ICD) obtained from family transactions in which parents and patients are working toward the solution of a salient family problem. ICD from this family problem-solving task was compared to more traditional measures of CD from parental TAT protocols in a sample of 59 parents of 37 recent-onset schizophrenic patients. Results indicated that CD could be reliably measured in an interactive setting not initiated around a projective test stimulus, and provided evidence for the construct validity of ICD.