This study compared the relative efficacy of four imagery techniques in increasing tolerance to cold pressor pain. Relevant pleasant, relevant unpleasant, irrelevant pleasant, and irrelevant unpleasant imagery strategies were compared in a two-way factorial design. Prior research suggested that pleasantness and relevance both affect imagery potency. This study attempted to assess the relative contribution of these two variables to increases in pain tolerance. Also investigated were the roles of several hypothesized mediating variables; namely, contextual valence, self-efficacy, treatment credibility, and involvement in imagery. The subjects were 60 female undergraduates who were randomly assigned to the four imagery groups. Two-way analysis of covariance were performed on all dependent variables, using pain threshold as the covariate. Pearons r.'s were used to test correlational hypotheses.

Drug-induced tardive dyskinesia, an irreversible involuntary movement disorder caused by neuroleptic drugs, may reflect cholinergic hypofunction in the corpus striatum. Therapeutic results have been reported in trials of choline and lecithin, nutritional substrates which may enhance cholinergic neurotransmission. Lecithin's effects on dyskinetic symptoms were examined in 50 male patients in a double-blind, placebo-controlled trial. Patients were randomly assigned to treatment or control groups; 31 patients were retained in the analytic cohort. Experimental patients were treated with 60 gm/day lecithin (55% phosphatidyl choline) for 11 days. Symptom frequency was rated from videotapes made at baseline, 3 and 11 days of treatment, and 1 week follow-up.