Low-dose caffeine discrimination and self-reported mood effects in normal volunteers.

A caffeine versus placebo discrimination procedure was used to determine the lowest caffeine dose that could produce discrimination and self-reported mood effects in normal volunteers. During daily sessions under double-blind conditions, caffeine-abstinent subjects orally ingested a capsule containing 178 mg caffeine or placebo. Before beginning discrimination training, the compounds were identified to subjects by letter codes. Fifteen, 30, and 45 min after capsule ingestion, subjects guessed the capsule's letter code. Correct guesses at 45 min earned money. After each session, subjects received a supplementary capsule containing caffeine or placebo to ensure that, within each phase of the study, subjects received the same daily dose of caffeine equal to the training dose. Five of the 15 subjects acquired the caffeine versus placebo discrimination within the first 20 sessions (greater than or equal to 75% correct); 6 other subjects acquired the discrimination with additional training. Nine subjects who acquired the discrimination were subsequently trained at progressively lower caffeine doses. In general, the lowest dose to produce discrimination (greater than or equal to 75% correct) was also the lowest dose to produce self-reported mood effects: 4 subjects showed discrimination and self-reported mood effects at 100 mg caffeine, 2 at 56 mg, 1 at 32 mg, and 1 at 18 mg. One of these subjects also showed self-reported mood effects at 10 mg. The present study documents discriminative stimulus and self-reported mood effects of caffeine at doses below those previously shown to affect any behavior in normal volunteers.     

A review of outcome studies of rational-emotive therapy from 1982–1989

In 1977, DiGiuseppe and Miller provided a review of the literature assessing the effectiveness of Rational-Emotive Therapy (RET). In 1984, McGovern and Silverman completed a similar review for outcome studies conducted from 1977 through mid-1981. This present study is meant as a continuation of those reviews. The 89 studies reviewed are divided into three sections: outcome studies that do not compare Rational-Emotive Therapy with other types of treatment; a review of outcome studies that do compare RET with other types of psychotherapy; and a review of Rational-Emotive outcome studies that either combine RET with other therapies or are not appropriate for the first two sections. There does appear to be some increased sophistication in the research conducted since 1982. Increases were noted in the number of control groups used in the current research as well as in the number of follow-up studies. There also appears to be an improvement in the comparison of RET with other forms of therapy, and the number of problem areas in which RET has been tested has increased. A decrease in post-test only studies and an increased variety of subjects have also improved the current research. Issues such as socioeconomic status and I.Q. of subjects, duration of treatment, and lack of longitudinal studies remain unaddressed. It is suggested that future researchers concentrate on these specific problems to improve the credibility of RET. This review coincides with the previous findings that RET is a valuable, effective therapy that warrants increased research to broaden its application.Manuel S. Silverman, Ph.D., is a Professor of Counseling Psychology at Loyola University Chicago.Margaret M. McCarthy, M.A., is a recent graduate of Loyola University Chicago.Terrance McGovern, Ph.D., is in Private Practice in Downers Grove, Illinois.     

Are professors likely to report having “beliefs” about the intelligence and competence of students who stutter?

Some university students who stutter report that they avoid participating in class discussions and talking with professors because they believe that if their professors find out they stutter, the professors are likely to view the students as being less intelligent and/or competent than they otherwise would. The purpose of this study was to determine whether professors, as a group, are likely to report such beliefs. A random sample of 87 professors at Marquette University, Indiana University of Pennsylvania, and the State University of New York at Stonybrook rated “A Student Who Stutters” on each of 81 seven-point, bipolar semantic differential scales, including intelligent/unintelligent and competent/incompetent. Although there was considerable scatter in their ratings for the majority of the scales, 85 of the 87 rated the student at the center or “positive” end of the intelligent/unintelligent scale and 83 of the 87 did so on the competent/incompetent one. Assuming that the attitutes reported by the professors reflect their “real” ones, these data suggest that many—perhaps the majority—do not have negative attitudes about the intelligence and competence of their students who stutter.     

The new birth phenomenon during imprisonment: Corrective emotional experience or flight into health?

In prisons the “born-again” experience is frequently encountered in the inmate population. The goal of this article is to examine the social and psychological parameters of this phenomenon, as well as those issues which indicate an enduring or transitory response.     

Effect of threat of shock for being disfluent of fluency of normal speakers.

Each of 20 adult nonstutterers read a 330-word passage six times with a one minute pause between readings. Between the third and fourth reading or the fifth and sixth reading (determined by a table of random numbers) Ss were informed that at the conclusion of the next reading an electric shock would be administered for each instance of disfluency detected by E during that reading. Ss did not become less fluent as a consequence of the experimental condition. Their mean disfluency frequency during the threat-of-shock reading was lower than during the preceding one. Thus, threat of shock for being disfluent may be a condition which differentiates stutterers from nonstutterers since stutterers have been reported to become less fluent under this condition.     

Punitiveness in response to films varying in content: A cross-national field study of aggression

Punitiveness in male movie-goers in London, Philadelphia, Rome and Toronto was measured before or after they attended films varying in content (aggressive, sexual, neutral) and arousal potential (low, high). A second dependent variable, altruism, was also assessed for some Ss. Hypotheses stemming from social learning theory and arousal theory were tested by comparing changes in punitiveness at aggressive, nonaggressive arousing (sexual) and nonaggressive nonarousing (neutral) films. At aggressive films there was an increase in punitiveness whereas a reduction in punitiveness was found at neutral films. Sexual films led to a smaller (nonsignificant) increase in punitiveness than aggressive films. The findings implied that arousal was a necessary, but not sufficient, condition for increasing punitiveness. There were no significant cross-national differences in response to the films. Since the results did not generalize to other, nonaggressive responses, the film effects may be aggression-specific. Two additional findings in the U.S. sample were that urban Ss were more punitive than rural Ss and that the length of urban residency correlated negatively with altruism.