Situational moderators of gender differences in reward allocations

This experiment investigated the impact of four variables, hypothesized to convey cues as to sex-role appropriate behavior, on gender differences in reward allocations between self and a co-worker. These variables were: expectations for future interactions with the co-worker, sex of co-worker, type of reward, and type of allocation decision. Males and females were asked to indicate how they would allocate money or course points between themselves and a same or opposite sex co-worker with inferior performance. Females allocated either type of reward more equitably than males when making independent allocations. When making joint (zero-sum) allocations, however, both sexes allocated rewards more equitably with a same-sex co-worker than with an opposite-sex co-worker when future interaction with the co-worker was expected. Grades were seen as more important than money by both sexes, and both men and women allocated course points more equitably than money. Type of reward did not, however, differentially affect men's and women's allocation patterns. Overall, independent allocations were more equitable than joint allocations. Results are discussed as suggesting that gender differences in reward allocations are not a result of inherent personality differences between the sexes but rather reflect the influence of situational factors that can arouse sex-role specific self-presentational concerns.     

Interpretation of instructions: A source of individual differences in analogical reasoning

Two studies were conducted to identify individual differences in the effect of instruction on strategies used to solve figural/numerical analogies. In Study 1, students aged 9, 11, 13, and 19 years were given incomplete instructions and then were assessed for (a) consistent use of an appropriate rule for solving analogies and (b) the type and number of stimulus attributes that are incorporated in those analogical rules. Use of an analogical rule increased with age and corresponded to higher scores on a psychometric test of reasoning within each age group. In Study 2, analysis of verbal protocols was used to identify the strategies of some 9- and 11-year-olds who showed a peculiar pattern of responding in Study 1. These children attended to relevant attributes but used systematic nonanalogical rules to solve problems. When provided with more specific instructions, most of these children adopted an analogical rule but failed to incorporate relevant attributes. Results indicate that selection or construction of task-relevant solution strategies from incomplete instructions may partially account for differential performance on tests of analogical reasoning.     

Assertion training: the effectiveness of a comprehensive cognitive--behavioral treatment package with professional nurses

The purpose of the study was to evaluate the effectiveness of a comprehensive cognitive-behavioral treatment package with a professional population of registered nurses using multiple self-report and role-play measures. Twenty-six self-referred registered nurses were randomly assigned to either a Treatment or Control group. The treatment package consisted of five weekly 2-hr sessions of group assertion training using the cognitive-behavioral model of Lange and Jakubowski. The Assertiveness Self-statement Test, the Rathus Assertiveness Schedule, the Adult Self-expression Scale, two Likert scales and role-play were used to evaluate changes over time. The results indicated: (1) the nurses in both groups at Pretreatment were clearly subassertive; (2) by Posttraining the Treatment-group members increased significantly their assertiveness as indicated on the self-report tests; (3) Treatment-group members had successfully maintained their improved assertiveness by the 2-month Follow-up; (4) the role-play ratings paralleled and supported the self-report results, but not at significant levels; (5) there was strong empirical support for the social validity of the treatment package; and (6) there was a high degree of treatment credibility for the cognitive-behavioral Assertion-training group. Overall, the results indicate clear support for the effectiveness of a broad-based cognitive-behavioral treatment package for treating subassertive behavior in a professional population of registered nurses.     

Effects of the community mental health centers program on the growth of mental health facilities in nonmetropolitan areas

Using a quasi-experimental design, changes in the numbers of mental health facilities between 1964 and 1974 were examined for a sample of 50 nonmetropolitan catchment areas that established a Community Mental Health Center (CMHC) before January 1973 and a sample that did not. Compared to non-CMHC areas, CMHC areas had a slightly greater number of general hospital psychiatric units in 1974. Nevertheless, the rate of increase in such units over the 10-year period was not significantly different between the two types of areas. Other findings supported the conclusion that the number of outpatient and day/night facilities continued to increase in areas not participating in the CMHC program, but that the program produced even greater numbers of such facilities in areas that did participate. This growth, though, occurred both through introducing additional facilities and supplanting existing ones.     

On Adhering to Judicial Instructions: Reactions of Dogmatic and Nondogmatic Juries to the Judge's Charge in an Entrapment Case1

Juries differing in dogmatism assessed the culpability of a defendant who had sold heroin to an undercover police officer and pled entrapment as his legal defense. The extenuating circumstances surrounding the drug sale provided either a reasonably compelling justification (high extenuating circumstances) or minimal justification (low extenuating circumstances) for an entrapment plea. Because of their alleged respect for and reliance on the pronouncements of authority figures, it was hypothesized that dogmatic juries would be more influenced than nondogmatic juries by the judge's charge about the meaning of entrapment (which, in this case, focused on the propriety of police conduct). Analyses of the jury deliberations, the decisions rendered, and postexperimental questionnaire data supported this hypothesis. Some implications of these outcomes are discussed.     

Attention deficit disorder in reading-disabled twins: Evidence for a genetic etiology

In order to assess the genetic etiology of attention deficit hyperactivity disorder (ADHD), the basic regression model for the analysis of selected twin data (DeFries & Fulker, 1985, 1988) was fitted to questionnaire data (DICA: Diagnostic Interview for Children and Adolescents; Herjanic, Campbell, & Reich, 1982) for 37 identical and 37 fraternal twin pairs tested in the Colorado Reading Project. Results of this analysis suggest that ADHD is highly heritable. Moreover, adjusting DICA scores for either IQ or reading performance differences did not substantially change parameter estimates. In future analyses of larger data sets, distinguishing between possible subtypes of attentional problems (e.g., ADD with or without hyperactivity) may facilitate tests of more searching etiological questions.This work was supported in part by program project and center grants from NICHD (HD-11681 and HD-27802) to J. C. DeFries. This report was prepared while J. Gillis was supported by NIMH training grant MH-16880, and J. Gilger was supported by a Fellowship in Developmental Psychobiology through the University of Colorado (MH-15442). B. Pennington was also supported by NIMH grants MH-38820 and MH-45916. The invaluable contributions of staff members and families who participated in the Colorado Reading Project are gratefully acknowledged. We also acknowledge the expert editorial assistance of the late Rebecca G. Miles.     

Perceptions of sexual harassment as a function of sex of rater and incident form and consequence

The purpose of this study was to investigate differences in perceptions of two “severity dichotomies” present in the Equal Employment Opportunity Commission Guidelines on sexual harassment. Alale and female undergraduates (N = 198), from a predominately white midwestern university, were given one of four statements based on these guidelines, varying “form” (physical/verbal) and “consequence” (economic injury/hostile environment) of the behavior. Analysis of variance results showed females rated the incident as more definitely sexual harassment and as affecting perfonnance more than did males. Participants reading “economic injury” statements rated them as having more effect on the victim’s job status than did those reading “hostile environment” statements. A multivariate analysis of variance revealed significant “consequence” and “sex” effects on several factors: A significant three-way interaction showed that males rated statements less negatively than did females, especially when the statement described “physical” behavior with “hostile environment“ consequences. Cluster analysis results are also presented.     

Reinforcement magnitude effects in first- and second-order conditioning of directed action

Three experiments investigated the effects of reinforcement magnitude on conditioned key pecking in pigeons. Experiment 1, which included between-groups and within-subject designs, yielded significant effects of unconditioned stimulus (US) magnitude on the within-conditioned stimulus (CS) distribution of key pecks and on choice behavior, but no effect on the overall rate of key pecking. Experiment 2 employed a larger US-magnitude difference in a within-subject design. This manipulation resulted in differential rates of key pecking as well as a significant choice effect and differential within-CS key-peck distributions. A second-order conditioning procedure was used in Experiment 3, in which diffuse, visual stimuli (S1's) served as Pavlovian reinforcers for two key-light S2's. The S1 previously paired with a large US was more effective in conditioning second-order key-peck behavior to an S2 than was the S1 paired with a small US. The results of these experiments demonstrate that the associative effects of US magnitude can be expressed in the strength of CS-directed motor responding. The distinctive within-CS key-peck distributions in first-order conditioning suggests an interaction between CS- and US-directed responses.