Agonistic behavior between wild and genetically sterile male Norway rats (rattus norvegicus)

Genetically sterile male Norway rats, Rattus norvegicus, were tested in the laboratory to determine both 1) behavioral characteristics, and 2) the ability of sterile males to compete aggressively and sexually with wild Norway rat males. Sterile males were larger in weight, more frequently dominant, won as many fighting encounters, were as aggressive as wild males, and mounted females more frequently. Behavioral activities were similar for both strains when compared under laboratory conditions with no apparent abnormal behavior exhibited by the sterile males. Use of sterile males in biological control programs is discussed.     

Reviews of current books

Pastoral Psychology -     

Multiple criteria follow-up of behavior modification with families

This report presents termination and follow-up evaluations of a parent training program based on behavior modification principles. Treatment termination outcome data were obtained for 22 families, and follow-up data were collected on 14 of these families 3 and 8 months after treatment. Results indicated a fairly high level of success at termination on the basis of parent-collected observational data, parent attitude change toward the children, and parent attitude concerning the process and outcome of treatment. Modest levels of success were evidenced on the basis of behavioral data recorded by trained observers in the home. Families who participated in follow-up demonstrated greater cooperation and involvement with the treatment program than those who did not participate. In all other respects, however, these two groups were similar. Follow-up data on parent attitude measures demonstrated maintenance of the treatment effects. Parent observational data were incomplete, but also showed maintenance in follow-up. For the subsample of 14 cases, home observation records indicated a nonsignificant decline in deviant behavior at termination followed by a nonsignificant increase in deviant behavior during follow-up. The meaning and implications of these discrepant findings were discussed and compared with results from other laboratories.     

Effects of taste quality and intensity on oral perception of viscosity

Oral assessments of viscosity were obtained with the method of magnitude estimation. Subjects judged the viscosity of a series of aqueous solutions thickened to one of six viscosity levels (1–2025 centistokes) with a food-grade gum, sodium carboxymethylcellulose. The solutions contained one of several concentrations of caffeine, citric acid, sodium chloride, or sucrose. The presence of taste substances significantly altered the perception of solution viscosity for only the thickest solutions. Increasing concentrations of citric acid and sodium chloride produced progressive decreases in perceived viscosity, and increasing sucrose concentrations produced small increases in perceived viscosity. Caffeine did not affect judgments of solution viscosity. The most likely explanation for these findings is that subjects detected differences in the Newtonian behavior of the thickened solutions, differences that were produced by the addition of taste substances.     

A comparison of the effects of child management and planned activities training in five parenting environments

This study compared the effects of two procedures designd to enhance the extratraining effects of behavioral parents training. Twenty parents of oppositianal children were randomly assign to either a child manangment training condition or a combined child management plus planned activity condition. A further 10 nonproblem children and their parents serve as a social validation group. Observation of both parents and children behavior were conducted in each of five home observation setting (breakfirst time, kindy (kindergarten) or school exit, a structured playtime, bathtime, and bedtime). Both training procedures result in change in both child oppositional and parents oversive behaviosr in all observation settings. In addition, desire positive parents behaviour also improve in all setting. Treatment effect were maintained in all setting at 3-month follow up. Composition between oppositional children following treatment and children in the social validation group showed that they each displayed similarly low lavels of oppositional behaviour in all settings. The inplecation of the results for faciliating generalised changes in behavioral parent training are discusssd.This study was supported by a grant from the National Health and Medical Research Council (NHMRC324 82 579049). We wish to thank all families, therapists, and observers who participated in the project.     

Predicting young women's role preference for parenting and work

Young women's motivations for two sex-role options were predicted with scores describing perceived rewards/costs of parenting. Using a sequence of multiple regression analyses it was found that the reward-cost perceptions of parenting and work were predictors of the two motivational options. Individual rewards/costs of parenting and work items were better predictors than summed items. It was found that a preference for the career choice was produced by not viewing parenting as rewarding. The preference for parenting choice was influenced most by perceiving parenting as rewarding. The perceived cost and rewards of work were not predictors of a career choice. The items found to be the best predictors for either the parenting or career choice all dealt with perceptions of parenting. It was concluded that these parenting perceptions are the key elements for young women's role motivations.