Role of the ultrasonic vocalization of the female rat (Rattus norvegicus) in sexual behavior

Both male and female rats vocalize ultrasonically during mating. Whereas male calls are known to facilitate female proceptive behavior, the female mating call has not been studied beyond spectrographic analysis. In this article, a series of experiments were done to examine the effects of the female's mating call on rat mating behavior. In the first experiment, females copulated with intact males before and after surgical devocalization. In the second experiment, intact females copulated twice with a male: once when they were able to hear and once when they were temporarily deafened with a medical ear mold. In the third experiment, tape recorded ultrasounds were placed in the presence of devocalized females while they were copulating with intact males. In the control condition, tape hiss was presented. In each experiment, it was observed that the female darted more if communication were disrupted (i.e., female devocalized or male deafened). Playback partially reduced darting to control levels. No other behavior was affected consistently across all experiments. Female calls might facilitate self-regulation of mating behavior, or they might focus the male's attention on her proceptive behaviors. It is also possible that the female calls could alter the stimulus properties of the male's behavior, indirectly affecting her own behavior.     

Parent-perceived child behavior problems: Comparison of normative and clinical factors of the Adelaide-Conners Parent Rating Scale

The Adelaide-Conners Parent Rating Scale (APRS), an instrument developed by studying a large, representative group of schoolchildren, was used with a group of psychiatry attenders. Multimethod factor analysis found satisfactory agreement between the factor structures of the clinical and the normative groups. The patterns of scores on the 12 APRS scales were also compared. Two higher-order factors (Conflict with the Environment and Conflict within the Self) were identified in the clinical sample as previously found in the normative group. Comparison of the factor solutions with previous empirical efforts to identify parent-perceived patterns of child behavior disorder showed that the APRS compares well with other instruments and supports the strategy of proceeding from the study of normative populations to the study of clinically defined groups.This work was supported in part by a grant from the Department of Health, Canberra.     

Occupational sex stereotypes among college students

Occupational stereotypes among college students are examined. College students rated the 106 occupations contained in the Strong Interest Inventory according to the degree persons in these occupations contained masculine or feminine traits or according to the proportion of men and women employed in them. Men and women made equivalent ratings of occupations. Ratings for trait and proportion did not differ. Based on comparisons with Shinar's earlier research in 1975, it would appear that stereotyping has moderated even though it remained present in responses. Further comparisons show consistent differences in stereotyping based on the Holland occupational types of occupations rated. Implications for the use of interest inventories and the continuation of sex typing are presented.     

The effects of family structure on institutionalized children's self-concepts

This study examined the effects of family structure (intact, stepparent, and single parent) on children's self-concepts, using Parish and Taylor's Personal Attribute Inventory for Children. One hundred sixty-six institutionalized children in Grades 5 through 12 participated in the study. Although a trend was noted for students from single-parent families to check fewer positive adjectives, they did not differ significantly (.05 level) from children from intact families or stepfamilies.     

Gender differences in marital communication patterns

This study examined conflict-resolution interactions of couples, and related marital satisfaction to sequential and nonsequential communication patterns. Couples' satisfaction with marriage has been differentiated on the basis of the degree of coercive versus affiliative communication between partners. Results of this study indicate that this pattern differs, however, for individuals within couples on the basis of gender. Females and males were found to demonstrate different styles of response to dissatisfaction in marriage; men assume a coercive stance toward their partners while women take an affiliative position. Drawing on systemic and gender-difference theoretical perspectives, these patterns are interpreted as attempts by individuals with different world views to resolve conflict. A view is discussed whereby systems and gender differences can be integrated into a unified conceptual formulation upon which to base future development in research and therapeutic interventions.     

Three-year analysis of characteristics of learning disabled students in self-contained classrooms and resource rooms

The present investigation examined the characteristics of school-identified learning disabled students from a large metropolitan school district in Tennessee. While it corroborated several findings of previous surveys of such students, this report also supplemented the literature by comparing the differences within a three-year span of time between school-identified learning disabled students who were assigned to self-contained classrooms and those who were assigned to resource rooms. Among the major findings were the presence of initial differences in IQ between self-contained and resource room students, the absence of differences in initial achievement scores between these two groups, and a decline over time in IQ, arithmetic, and spelling scores for both groups.     

The influence of status and sex-typing on assessments of occupational outcome

In order to investigate the relative strengths of status and sex-typing of occupations on evaluations of job outcomes, this study varied sex of subject, sex of stimulus person, status of occupation, sex-typing of occupation, and job outcome in a three-between, two-within factorial design. Contrary to previous research, subjects' beliefs about stimulus persons' affective reactions to job outcomes were not consistent with rigid sex-typing of jobs. Instead, the data suggest that crossing the sex-typing barrier in occupations is receiving growing acceptance, and that subjects are aware of sex segregation and discrimination in the labor force. Other data suggest that subjects' beliefs about job outcomes are influenced by belief in a just world.The authors wish to thank Walter G. Stephan for commenting on an earlier version of this article.     

Naming practices,typicality, and underextension in child language

Preschool children (3 to 5 years of age) in an initial study underextended superordinate labels. The labels (e.g., food) were not applied to category instances that were rated as atypical by adults (e.g., ketchup). In a second experiment, mothers seldom used a superordinate term in referring to pairs of the same atypical instances, but they did label pairs of typical instances with a superordinate. A third experiment demonstrated the effects of several word-referent modeling conditions on young children's comprehension of a superordinate term. The results were viewed as suggesting that the child undergeneralizes superordinate labels because adult naming practices are such that category instances having certain functional or perceptual attributes may be labeled with a superordinate, while other, dissimilar instances are almost always labeled with subordinate names instead of a superordinate.     

Vicarious extinction of phobic behavior in early childhood

Fifteen children who had previously demonstrated phobic behavior under dental treatment were randomly assigned to one of three experimental conditions. Each condition involved six sessions which were conducted over a three week interval. Results supported the efficacy of modeling as a means of ameliorating phobic behavior in the dental treatment situation. Although viewing the operatory and professional staff alone appeared therapeutic, modeling was considered a superior mode of treatment.