How does the visual system distinguish between illuminance and reflectance?

The experiments in which the strengths of pattern and of fusion differing in kind from brightness were used as measures indicated that the visual system could distinguish between illuminance and reflectance. From this result and an observation of gray papers by a microscope, it is assumed that luminance has two aspects, one refers to the macroscopic density of photons and another to the proportion of the reflected microscopic areas to the absorbed microscopic areas so that brightness constancy occurs in relation to each of the patterns of the various sizes from a macroscopic pattern visible to the naked eye to a microscopic pattern not visible. It is also mentioned that the strength of fusion is rare but promising as a measure for analyzing brightness.     

Sex differences in self-concept among African adolescents

To examine sex differences in self-concept among black African adolescents in Umtata, South Africa, 97 boys and girls whose mean ages were 18.0 and 17.7 yr., respectively, were drawn from St. John's College students who were in their final year of high school and were preparing for their final year and national matriculation examinations. On the Canadian Self-esteem Inventory mean scores obtained by girls and boys were not significantly different.     

Biobehavioral factors in sudden cardiac death

The authors examine the recent literature on psychological factors and sudden cardiac death and explore the mediating psychophysiological processes by which these variables may be associated. Direct evidence that psychosocial stressors and their correlates may be causally linked with sudden cardiac death in humans is not conclusive, but there is abundant convergent evidence that several physiological precursors of sudden death may be promoted by psychological challenge, especially in persons with coronary heart disease. The authors call for increased attention to the acute effects of psychological events on cardiovascular health.     

Gender and the influence of evaluations on self-assessments in achievement settings

This article reviews evidence for a gender difference in responsiveness to others' evaluations in achievement situations. Studies show that women's self-evaluations are more responsive to the valence of the evaluative feedback they receive than are men's. A number of possible explanations for this effect are then discussed, with the best evidence pointing to men's and women's differing construals of the informational value of others' evaluations in such situations. Research on the behavioral consequences of women's lower status as well as on children's experiences with evaluative feedback provides potential explanations for this effect. A more proximal explanation, however, lies in men's and women's different approaches to evaluative achievement situations. Men may be particularly likely to respond to the competitive nature of evaluative achievement and hence to adopt a self-confident approach that leads them to deny the informational value of others' evaluations. Women may be particularly likely to approach such situations as opportunities to gain information about their abilities.     

Discriminative Versus Reinforcing Properties of Schedules as Determinants of Schedule Insensitivity in Humans

The Psychological Record - Compliance with instructions to respond on response-independent schedules was studied to see if schedule insensitivity is determined by reinforcement of inappropriate...     

TEAM-BASED EMPLOYEE INVOLVEMENT PROGRAMS: EFFECTS OF DESIGN AND ADMINISTRATION

In recent years, many organizations have attempted to pursue continuous improvement through team-based employee involvement programs (EIPs). As a result, increased practical emphasis has been placed on how to design and administer EIPs, though empirical work has been slow to emerge. In the present research, a pilot study of 68 EIP administrators was used to identify those design and administrative variables thought to be associated with EIP effectiveness. Data were then collected from 72 EIP teams in two organizations and associated with participant and supervisory assessments of EIP effectiveness. Results suggest that the significant predictors of team effectiveness were the degree of openness of a team's information access structure, the degree of heterogeneity in the job functions performed by team members, and the team's size. Implications for EIP research and practice are discussed.     

Relationship between the Kaufman Test of Educational Achievement--Brief Form and the Wide Range Achievement Test--Revised Level 2 with incarcerated juvenile delinquents

The Kaufman Test of Educational Achievement--Brief Form and the Wide Range Achievement Test--Revised Level 2 were administered in counterbalanced order to 50 male incarcerated juvenile delinquents. The analyses showed the similar subtests on the two tests, i.e., Kaufman Reading test and WRAT-R Reading, were highly correlated. The mean standard scores of th e similar subtests were not significantly different from each other. These results contrast with the significantly lower WRAT-R scores found when scores on the WRAT-R Level 1 are compared with those on the Kaufman test.     

Cognitive styles and moral reasoning

It was hypothesized that field-dependent persons would be reasoning at the conventional level, whereas field-independent persons would reason at the post-conventional level. Data from 7 female and 3 male graduate students in Canada supported the first hypothesis (8 field-independent vs 2 field-dependent scorers), but not the second one.     

When are AIDS patients to blame for their disease? Effects of patients' sexual orientation and mode of transmission

This study examined three factors affecting college students' attributions of blame for an AIDS patient's disease: sexual orientation of the patient, mode of HIV transmission, and the sex of the subject. 148 subjects read one of six vignettes describing an hypothetical AIDS patient who was described as either an heterosexual or an homosexual man who contracted HIV through one of three avenues: blood transfusion, sexual contact, or IV drug use. The homosexual AIDS patient was considered more to blame for his illness than the heterosexual AIDS patient, but only when mode of transmission was sexual contact. In addition, mode of HIV transmission was a significant factor in attributions of responsibility, as the patient who contracted HIV through a blood transfusion was rated as less responsible than the patient who contracted HIV through sexual behavior or IV drug use. Women consistently rated the AIDS patient as less responsible than did men.