Noting that children of alcoholic parents come from home settings similar to those identified as potential sources of communication apprehension, a study compared communication apprehension scores of adult children of alcoholics (ACoA) with those of non-ACoAs. Subjects, 85 men and 109 women, were drawn from a local church, undergraduate and graduate classes at a northern California university, and northern California Al-Anon ACoA meetings. They ranged from 18 to 60 years of age, with a wide range of educational backgrounds. Each subject completed a questionnaire that consisted of two instruments: the Children of Alcoholics Screening Test (CAST) and McCroskey's Personal Report of Communication Apprehension Test (PRCA-24). Results indicated a strong relationship between ACoAs and CA except where subjects were involved in a group communication situation. Findings suggest that future research investigating communication and ACoAs is called for. (Two tables of data are included. Contains 21 references.) (NH)