The Premack principle in human experimental and applied settings

Studies claiming support for the Premack Principle in human experimental and applied settings are reviewed in terms of the standard test conditions associated with the Principle and in terms of the Principle's conceptual constrains. Little definitive evidence was found to support the claim that a high probability response will reinforce a lower probability response, nor was the converse contention supported, that a low probability response will act as a punisher for a high probability response. More importantly, among the reports reviewed there was no evidence for the reversibility of the reinforcement relationship.     

Behavior therapy for asthma: a review

The paper reviews 24 case studies and experiments which assess behavior therapy for asthma or some collateral behavior management problem. The reports are examined in terms of treatment population, design, dependent variable, technique, outcome, and follow-up. Methodological and instrumentation suggestions are made for future research.     

Effects of sucrose concentrations on single alternation runway responding in rats

Rats received runway training under alternating reward and nonreward in which rewarded (R) trials provided 32 or 4% sucrose concentration from a drinking tube and nonrewarded (N) trials provided a dry tube or, for half of the rats in the 32% condition, plain water. Both 32 and 4% concentrations yielded faster running on R trials than on N trials; but this effect was reliable only for the 32% condition. Compared to 4% sucrose, 32% sucrose yielded reliably slower running on N trials and unreliably faster running on R trials.     

“Snowball” and other control groups

In the Spring of 1973, the Office of Research and Development of the Appalachian Center, West Virginia University, began an evaluation of the University's mining extension program. Since all interested miners are allowed to enroll in the course, the only feasible way to obtain a control group was to use the “snowball process.” This paper examines how well the snowball process did in producing a control group which matched the trainees. While the trainees and controls seemed well matched on many demographic characteristics they differed on several variables, particularly attitudes.     

A simple instrument for measuring vocational interests based on Roe's classification of occupations

A vocational interests inventory-“Ramak”-based on Roe's (1956) classification of occupations was constructed. It consisted of 72 names of occupations. Equivalent-test reliability of 0.76 was achieved. The inventory was validated on working samples and by the structure of intercorrelations. The advantages of this inventory are discussed.     

You don't always get what you pay for: Measuring depression with short and simple versus long and sophisticated scales

In three studies subjects' depressiveness was assessed by a variety of instruments. Questionnaire scales were either comparatively short or long and either fairly simple, content oriented, and undisguised or sophisticated in the sense of reflecting psychodynamic theorizing or elaborate multivariate approaches to scale construction. Simple self-ratings were also obtained. Results showed that (a) short scales were as valid on the average as long scales in all three studies, even though some of the short scales were merely subsets of the long scales; (b) simple scales were as valid as sophisticated scales in all three studies; and (c) self-rating scales were as valid as questionnaire scales in two studies, but not in the third. The discussion focuses on certain unrealistic assumptions of the Spearman-Brown formula and on the notion of personality assessment as a noise-afflicted communication process.