“…As yet, however, there have been very few systematic attempts to investigate factors which might be related to this deficit. Different studies have described some of these factors, such as inappropriate and/or flattened affect, disturbed intellectual functioning, poor prognosis, chronicity, and hebephrenic diagnosis (Kasanin & Hanfmann, 1938;Meadow & Funkenstein, 1952;Scherer, 1951;Stotsky & Lawrence, 1955), but replication of these findings is generally lacking, and many other factors must remain to be described. The present study represents a preliminary attempt to investigate some of these factors, with the specific purpose of determining whether conceptual deficit in schizophrenia covaries consistently with performance on psychological tests and with certain clinical variables, in the hope of generating hypotheses for future research.…”