This study compares the effects of exploratory, insight-oriented (EIO) and reality-adaptive, supportive (RAS) forms of psychotherapy on a sample of 95 schizophrenic patients. Analyses of 2-year outcomes revealed a complex interaction between the type of psychotherapy provided and the domain of psychopathology affected. RAS psychotherapy exerted clear preferential effects in the areas of recidivism and role performance. The EIO psychotherapy exerted preferential, albeit more modest, action in the areas of ego functioning and cognition. Overall, however, the magnitude of the differences was low. The results highlighted the need for more focused studies of subgroups, and of process and contextual influences on outcome.

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Rats trained on 16 two-odor discrimination problems showed rapid acquisition of a learning set and one-trial learning by the end of the problem series. Learning to sample odor cues before responding and adoption of a "win-stay, lose-shift" strategy probably accounts for the virtually errorless learning. Learning-set performance of rats trained with odor stimulus comparable to that reported for primates trained on visual cues.

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