PSYC 3230 Lecture Notes - Criterion Validity, Content Validity, Antisocial Personality Disorder
10 Sep 2013
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Clinical psychologists need to be more than just someone who goes around giving therapy. 1949, boulder conference on graduate education in psychology. Clinical psychologist to be trained both as scientists and practitioners. Clinical psychologists should use their training as scientist researchers to guide their practice. Statistical (actuarial) method-- classify the individual in terms of similar cases (nomothetic) -- as in testing. Clinical method-- attempting to understand the individual apart from other cases (idiographic) Advocates argue that psychological causation is always personal and never actuarial. We should discard all predictions based on class membership. E. g. , if 80% of all delinquents from broken homes are recidivists, it does not follow that a single delinquent from a broken home has an 80% probability of becoming a recidivist. Probability is based on frequencies obtained across repeated trials. However, a particular delinquent represents only a single trial.
