“…Clinicians consistently failed to make more valid judgments than did graduate students in mental health fields. This was true when clinicians and graduate students were given data from interviews (Anthony, 1968; Grigg, 1958; Schinka & Sines, 1974), observation data (Garner & Smith, 1976), data from therapy sessions (Brenner & Howard, 1976), biographical information (Oskamp, 1965; Soskin, 1954), projective drawing protocols (Levenberg, 1975; Schaeffer, 1964; Stricker, 1967), Rorschach data (Gadol, 1969; Turner, 1966), MMPI data (Chandler, 1970; Danet, 1965; Goldberg, 1965, 1968; Graham, 1967, 1971; Oskamp, 1962; Walters et al, 1988), neuropsychological testing data (Goldberg, 1959; Goldstein, Deysach, & Kleinknecht, 1973; Heaton, Smith, Lehman, & Vogt, 1978; Leli & Filskov, 1981, 1984; Robiner, 1978), and extensive data (i.e., all of the data that staff members generally have available on a psychiatric inpatient unit; Johnston & McNeal, 1967).…”