Thought disorder among the relatives of schizophrenics. A reaction to Callahan and Saccuzzo

Callahan and Saccuzzo (J Nerv Ment Dis 174:240-242, 1986) claim that there has been no published research on thought disorder (associative cognitive dysfunction) in the first-degree relatives of schizophrenics and interpret the results of their preliminary study as indicative of familial psychopathology. In fact, there have already been numerous published studies on this topic drawing the same broad conclusion. Attention is drawn to these studies, and their findings are described. A fresh approach to research in this area is called for.