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.     

Age,sex, training,and the measurement of field dependence

This study was designed to: (a) examine the effects of age and sex on a person's susceptibility to field dependence training; (b) determine whether the field dependence phenomenon is a function of “cognitive style” or of a person's general inability to make correct judgments in the face of too much confusing and inaccurate information. Traditional Rod and Frame scoring is based on the latter assumption. Interpretation of results, however, has traditionally been based on the “cognitive style” assumption. Results indicate that Rod and Frame results are not a function of cognitive style. This seems particularly true of two aspects of the field dependence phenomenon: (a) the sex difference effect and (b) the correlation between Rod and Frame and Embedded Figures results. Age, more than sex, may be a function of both cognitive style and general ability to perceive the upright. A training effect was not demonstrated. Hypotheses were put forward to explain the nature of field dependence, the magnitude of field dependence errors, and the lack of a training effect.     

A neural activity interpretation of luminance effects on infant pattern preferences

Visual pattern preferences were established for 9- and 13-week-old infants (N = 96) using stimuli varying in contour density presented either at a low, moderate, or high luminance level. Age differences in the maximally preferred patterns across stimuli and luminance levels indicated that luminance interacts with contour density in determining stimulus preference functions for a given age. A neural activation model based on synchronous neural activity was advanced to describe these results.     

Information extraction during visual search: A developmental progression

Five developmental experiments examine the role of context in visual search. Experiments I and II presented either lists or paragraphs that were either in meaningful context or scrambled. Results showed a significant interaction of these variables. Experiment II examined within-item context or predictability and replicated and extended the work of Brand (1971) and Ingling (1972). Experiments IV and V examined search through lists of various widths; results showed a significant interaction of Grade × Position × Width reflecting the different perceptual spans of children and adults. Although these were search tasks, appropriate comparisons between list and paragraph performance were made allowing interpretations of the results to be supportive of a model of reading in which meaningfulness, predictability, and peripheral vision play critical roles.     

The effect of pictorial detail and elaboration on children's retention.

In a visual memory task, two degrees of stimulus detail were compared to test Reese's hypothesis that stimulus detail would facilitate retention of paired associates for young children. Stimuli were presented in an elaborated or nonelaborated fashion so that the effect of detail on retention of both types of materials could be investigated. Four and 5 year-old children were included to assess a reported developmental trend that elaboration facilitates retention for older children but fails to do so for younger children. Both age groups performed equally well, and detail had no effect. Elaboration aided retention significantly. A second study, in which difficulty of the task was increased, yielded equivalent results. The constraints on performance by recall and recognition tasks were discussed.     

Spatial representation by blind and sighted children

Spatial representation by 72 blind and blindfolded sighted children between the ages of 6 and 11 was tested in two experiments by mental rotation of a raised line under conditions of clockwise varied directions.Experiment 1 showed that the two groups were well matched on tactual recognition and scored equally badly on matching displays to their own mentally rotated position.Experiment 2 found the sighted superior in recall tests. There was a highly significant interaction between sighted status and degree of rotation. Degree of rotation affected only the blind. Their scores were significantly lower for rotating to oblique and to the far orthogonal directions than to near orthogonal test positions. On near orthogonals the blind did not differ from the sighted.Age was a main effect, but it did not interact with any other variable. Older blind children whose visual experience dated from before the age of 6 were superior to congenitally blind subjects, but not differentially more so on oblique directions.The results were discussed in relation to hypotheses about the nature of spatial representation and strategies by children whose prior experience derived from vision or from touch and movement.     

Systematic desensitization, relaxation-training and suggestion in the treatment of test anxiety.

In investigations that have examined the component procedures in traditional desensitization treatment, desensitization was more effective than relaxation-training alone in several studies (Freeling and Shemberg, 1970: Davison, 1968; Rachman, 1968). while these treatments were equally effective in other studies (Benjamin, Mark and Huson, 1972: Aponte and Aponte, 1971; Johnson and Sechrest, 1968). One possible determinant of these inconsistent findings may be the presence of uncontrolled differences in therapeutic suggestion due to the fact that desensitization treatment typically includes a specific ‘rationale’ that explains the expected course and outcome of treatment while comparable authoritative guidelines for providing the rationale for relaxation treatment are not available.The present study compared the relative effectiveness of desensitization and relaxation-training in the treatment of test anxiety under conditions in which suggestion concerning the nature and outcome of treatment were essentially the same for both procedures. To examine systematically the role of suggestion in the treatment of test anxiety, instructions that were high and low in suggestion were given. Treatment outcomes were assessed in terms of changes in measures of anxiety and in performance on objective ability tests. A no-treatment group controlled for the effects of using the same pre- and post-treatment measures.     

The virtues of the SDS and its associated typology: A second response to Prediger and Hanson

The author reviews the evidence for the beneficial effects of the Self-Directed Search (SDS), indicates that Hanson and Prediger have misinterpreted the theory, that their evidence is misleading, and that other evidence indicates that males and females of the same type are similar. The virtues of raw scores are summarized. The author recalls some methodological adventures and outlines where we are now in this controversy about the measurement of interests for special groups.     

Vocational maturity of Arab and American high school students

The vocational maturity of Arab and American ninth- and eleventh-grade students were compared. Arab students were found to have lower maturity scores than American students. Eleventh graders of both nationalities were more vocationally mature than ninth graders. The possibility that the overall difference found between Arab and American students can be attributed to cultural differences was supported by the response trend of discriminating items as revealed by an item analysis.