To the Editor: Recently, Mary Cannon, M.Sc., and colleagues (1) reported significantly poorer premorbid adjustment in the childhood and adolescence of schizophrenic patients and, to a lesser degree, in patients with bipolar disorder compared with healthy subjects. However, the researchers did not discuss the possible impact of different levels of expressed emotion (2) that inevitably exist in at least some schizophrenic families on the mothers’ recall of their children’s behavior in childhood, especially when we consider schizophrenia and bipolar disorder as long-term and chronic illnesses.

Using the Five-Minute Speech Sample (3), a brief variant of the Camberwell Family Interview (4), together with the adapted Premorbid Social Adjustment Scale (5), instead of the simple telephone interviewing that was done in the study would probably complicate the overall study procedure and the analysis of collected data a little but could undoubtedly benefit the appropriate rating of affected families and the more precise estimation of received information.