In 1913, Psychiatrist and Philosopher Karl Jaspers had pronounced, in his work, General Psychopathology, that many of the symptoms of mental illness (and particularly of delusions) were "un-understandable", and therefore were worthy of little consideration except as a sign of some other underlying primary disorder. Then, in 1956, Gregory Bateson and his colleagues, Donald Jackson, and Jay Haley articulated a theory of schizophrenia as stemming from double bind situations where a person receives different or contradictory messages. The perceived symptoms of schizophrenia were therefore an expression of this distress, and should be valued as a cathartic and trans-formative experience. Laing argued a similar account for psychoses: that the strange behavior and seemingly confused speech of people undergoing a psychotic episode were ultimately understandable as an attempt to communicate worries and concerns, often in situations where this was not possible or not permitted. Laing stressed the role of society, and particularly the family, in the development of "madness" (his term).