Therapists who participated in previous active drug-placebo studies of chronic and acute schizophrenics were rated on the Whitehorn-Betz A-B scale. The ratings were then related to treatment outcome. Patients who had been treated with phenothiazines and by Type A (verbal-intellectual) therapists improved more than those treated with placebo and by Type B (practical-mechanical) therapists, although the results were not statistically significant. The authors stress the importance of further research in this area.
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