Schizotaxia, schizotypy, and schizophrenia: Paul E. Meehl's blueprint for the experimental psychopathology and genetics of schizophrenia

Paul E. Meehl proposed a model of the cause and pathogenesis of schizophrenia and related states in the early 1960s (Meehl, 1962), which he later revised in 1990 (Meehl, 1990). His model emphasized a genetically influenced aberration in neural transmission that could eventuate in clinical schizophrenia, nonpsychotic schizotypic states, or apparent normalcy depending on the coexistence of other factors. His model embodied the core ideas of the diathesis-stressor framework that would come to dominate experimental and developmental psychopathology for the next 40 years. The author reviews Meehl's model of schizotaxia, schizotypy, and schizophrenia and reviews and clarifies some frequent misunderstandings of the model.