Abstract Responses to a questionnaire concerned with perceived somatic responses to stres were obtained from 617 families. The frequency of occurrence of each of ten specific responses was looked at as a function of sex and age of the respondent. In addition, conditional probabilities were obtained for students, for each of the symptoms, given that thier (a) mother, (b) father and (c) same sexed sibling either did or did not report that same reaction. In brief, both sex and age were found to be important determiners of perceived bodily responses to stress. Occurrece in the parents but not same sexed sibling greatly increased the probability of a student reporting that same reaction.