Effects of female odors on the sexual behavior of male hamsters

A series of experiments was undertaken to investigate the effects of removal of several scent glands and scent-producing organs of female hamsters on the copulatory performance of male hamsters. In the first experiment it was shown that males engage in less copulatory activity toward females lacking vaginal secretions than toward females with these odors. Eliminating visual cues by observing pairs under infrared illumination did not change the performance of males toward these two kinds of females. The results of Experiment 2 indicated the importance of flank, ear, and Harderian glands as well as vaginal secretions--males showed the highest levels of copulatory behavior toward females with a full complement of odors and the lowest levels toward those lacking three of four sources of scent. Similar results were obtained in the third experiment in which anesthetized females were used as stimulus animals to increase the importance of chemical cues and to reduce variability due to the behavior of females. The sexual behavior of males was greatest toward females with all sources of scent present, lower toward those lacking vaginal secretions, and still lower toward those lacking vaginal secretions and other sources of odors. In the fourth experiment we asked whether any one of the nonvaginal scent glands was particularly important in stimulating male sexual behavior, but we found no differences in male performance toward females that lacked vaginal secretions or that in addition lacked one of the other scent glands. In the fifth experiment males displayed higher levels of sexual behavior toward vaginectomized females than toward vaginectomized females that had been deodorized by a cleaning procedure, again indicating the importance of nonvaginal odors in stimulating copulatory performance. Thus these experiments demonstrate the importance of vaginal secretions in the sexual arousal of male hamsters, a role for nonvaginal odors in sexual arousal of males, and the lack of necessity of these odors for male copulatory behavior. These results have implications for theories of olfactory communication in mammals and for interpretations of experiments in which lesions of the olfactory system lead to deficits in male copulatory performance.     

Perinatal bromopride treatment: effects on sexual behavior of male and female rats

Effects of different perinatal bromopride treatments on sexual behavior were examined in adult male and female rats of Wistar origin. Female rats of mothers treated with bromopride (BRO) during lactation (VB group) and during pregnancy and lactation (BB group) showed lower lordosis quotients than those of controls (VV group). Females of mothers treated with BRO only during pregnancy (BV group) showed no differences in lordosis quotient when compared to the VV group. There were no significant differences in male sexual behavior between experimental and control groups. The effect of bromopride on the control of sexual behavior is discussed.     

Differential influence of stereoisomers of estradiol on sexual behavior of female hamsters

Morphological and behavioral responses to estradiol-17 beta (E2-17 beta) and estradiol-17 alpha (E2-17 alpha) were examined in a series of three experiments. The E2-17 beta augmented uterine growth in hamsters to a greater extent than did E2-17 alpha. Lordosis in ovariectomized adults was elicited by treatment with E2-17 beta but not with E2-17 alpha (each tested in combination with progesterone). When administered neonatally only E2-17 beta disrupted estrous cyclicity in the intact female and induced the ability to mount in ovariectomized, androgen-treated adults. These results suggest the existence of a stereospecific response to estrogenic stimulation in neural tissue comparable with that occurring in the uterus.     

Comparisons of female and male early adolescent sex role attitude and behavior development

This study contrasted female and male early adolescent sex role attitude and behavior development in an ecological context as defined by Bronfenbrenner. Data were the results of a state-wide survey of early adolescents and their parents. Hierarchical multiple regression was used to test both sex role attitude development and behavior development models. Only the models for attitude development were significant. The level of traditionalism of female sex role attitude development was significantly influenced by maternal employment, the level of traditionalism of the father's sex role attitudes in interaction with the amount of time he spent with his daughter, and chronological age. In contrast, the level of traditionalism of male sex role attitude development was significantly influenced by the level of traditionalism of the mother's sex role attitudes in interaction with the level of closeness to the mother that was reported by the son, and both mother's and father's perception of pubertal age. The implications of the findings for human development theory, early adolescence as a stage of development, and sex role theory and research are discussed.     

Neonatal androgenic stimulation and adult sexual behavior in male and female golden hamsters.

Neonatally and adult castrated male hamsters as well as neonatally androgenized and nonandrogenized female hamsters were tested for both mounting and lordosis behaviors during treatment with either testosterone or ovarian hormones. Neonatal androgenization facilitated mounting behavior in adult animals administered either testosterone or ovarian hormones and suppressed lordosis behavior in adult ovarian-hormone-treated animals. Early androgen effects on the display of lordosis behavior during adult testosterone treatment were complex and varied with the exact timing of perinatal endogenous or exogenous androgenization. Species differences in hormone-behavior relationships and the possible role of perinatal androgenization in the development of rodents' ability to aromatize androgens were discussed.     

Histories of sexual abuse in adolescent male runaways

In this study, data on sexual victimization in the histories of 89 Canadian male runaways as well as information on physical victimization, family structure, family financial stability, delinquent and criminal activities, and reasons for running away from home were evaluated. The population of male runaways evidenced dramatically higher rates of sexual and physical abuse than did randomly sampled populations. Sexually abused and nonsexually abused male runaways shared characteristics noted in the literature as common to runaways: problem families, high rates of delinquency, depression, tension, low self-image, and history of physical abuse. Sexually abused male runaways differed from nonsexually abused runaways in their reactions to their runaway event, with sexually abused male runaways responding in highly avoidant patterns coupled with extreme withdrawal from all types of interpersonal relationships. These differences are explained as consistent with known sequelae of sexual abuse, and the implications for treatment by runaway shelters and for further research are suggested.     

Peer victimization in adolescence has different effects on the sexual behavior of male and female college students

We studied levels of peer victimization from an evolutionary perspective by investigating self-reported victimization during adolescence in relation to sexual behavior in college students. One-hundred and twelve (47 female) undergraduates completed self-report measures of victimization during middle and high school, onset of sexual activity, and number of sexual partners. Nearly 85% of victimization during adolescence was perpetrated by members of the same sex. Furthermore, results show that this intrasexual victimization (particularly indirect forms) was negatively correlated with reproductive opportunities in males, but positively correlated in females. Males who were frequently victimized had fewer total sexual partners and partners per year on average, while females who were often victims of aggression reported having more sexual partners and an earlier onset of sexual activity. Regression analysis revealed that demeaning, diminishing and embarrassing was the most significant predictor of the rate of sexual activity in both sexes (although this relationship was inverted between them), while teasing was the best predictor of total sexual partners in females. This evidence is consistent with evolutionary interpretations regarding human aggression and competition, as well as with recent findings suggesting that indirect victimization during adolescence is a form of intrasexual competition associated with reproductive opportunities.     

The impact of depressive symptomatology on risky sexual behavior and sexual communication among African American female adolescents

Adolescents, particularly African American adolescents, are at high risk for sexually transmitted infections (STIs). The association between psychosocial factors and risky sexual behavior has been well established. However, only a small number of studies have examined the relationship between depressive symptomatology among African American female adolescents, specifically over time. The present study examined depressive symptoms as a predictor of risky sexual behavior, sexual communication, and STIs longitudinally among African American female adolescents between the ages 15 and 21. Binary generalized estimating equation models were conducted assessing the impact of depressive symptoms at baseline on risky sexual behavior and STIs over six- and 12-months follow-up. Age, intervention group, and baseline outcome measures were entered as covariates. The results indicated that high levels of depressive symptoms predicted no condom use during last sexual encounter and multiple sexual partners over six-months follow-up. Depressive symptoms also predicted having a main partner with concurrent partners, high fear of communication about condoms, and sex while high on alcohol or drugs over six- and 12-months follow-up. These findings could be used to inform HIV/STI prevention intervention programs and clinicians providing regular health care maintenance to African American female adolescents engaging in risky sexual behavior.     

Parental conflict and male adolescent problem behavior.

Mothers in 30 clinical and 35 nonclinical families completed a behavior checklist for a target son and all other sons in the family who were between 13 and 17 years old. Each of these male adolescents completed two perceived parental conflict questionnaires for their biological parents. In each group, child behavior problems and parental conflict were correlated under two conditions: (a) using information pertaining to the target adolescent and (b) using information pertaining to the male adolescent experiencing the greatest behavior difficulties. Correlations increased in the nonclinical group when the information used was for the adolescent experiencing the greatest behavior difficulties.     

Communication in relationships and adolescent substance use: the influence of parents and friends

This study focused on the openness of communication in teenagers' relationships with mother, father (or parental figure), and closest friend, and its correlation with teenagers' use of cigarettes, alcohol, marijuana, and other drugs. The predictive value for substance use of perceived pressure from friends, friends' substance use, and parents' substance use was also analyzed. The findings from questionnaires and interviews conducted with 37 students at an urban and a suburban/rural high school in New England are reported. The results suggest that the degree to which adolescents talk openly with their parents may influence the extent of their substance use. The presence of at least one "open" parental figure was associated with lower levels of all substance use. However, there was no evidence that openness with a close friend or perceived pressure from friends is related to substance use.     

Vocal behavior in the dyadic interactions of preadolescent and early adolescent friends and acquaintances

Conversational interactions of sixth-grade friends and acquaintances in mixed- and same-gender pairs were computer analyzed so that the individual and dyadic time patterns of their vocal behavior could be examined. A comparison of their time patterns revealed that the boy-boy pairs used more and longer segments of simultaneous speech with acquaintances than with friends whereas the girl-girl pairs did the opposite. In general, partners tended to coordinate the durations of their vocal behaviors with each other but, more specifically, the boys coordinated the timing of their speaking turns and switching pauses more when they were friends than when they were acquaintances, and the girls again did the opposite. Finally, the girls coordinated the durations of their pauses significantly more than did the boys regardless of whether they were with friends or acquaintances or in mixed- or same-gender pairs.     

Monoaminergic mediation of female sexual behavior.

Lordotic behavior was facilitated in estrogen-primed female rats by direct application of progesterone or serotonergic or beta-adrenergic receptor blockers to specific telencephalic, anterior hypothalamic-medial preoptic, or posterior hypothalamic sites. Blockade of the alpha-adrenergic system was ineffective in facilitating lordosis, as was the application of the active drugs to control sites in the thalamus or basal ganglia. Female soliciting behavior was not evoked by any of the treatments. It is concluded that the lordotic behavior component of the female rat's estrous behavior pattern is inhibited by a specific central monoaminergic system that also responds to progesterone. Soliciting behavior appears to be mediated by systems that are anatomically, and possibly neurochemically, separable from those regulating lordosis.     

Social variables influence female sexual behavior in the musk shrew (Suncus murinus)

The role of social variables in the mediation of sexual behavior was examined in the female musk shrew (Suncus murinus). Two social variables were manipulated: amount of reproductive experience and exposure to male-related chemical cues. Virgin females took significantly longer to achieve receptivity than did sexually experienced females. In addition, exposure to soiled bedding taken from a male's cage for 24-hr prior to testing reduced receptivity latencies in all females. Even a brief (30 min) exposure to male-related cues was effective in facilitating receptivity in virgins. The converse was noted for female aggressive behavior. Virgin females attacked more frequently than experienced females, and preexposure to male-related cues reduced aggressiveness. These findings suggest that social variables play an important role in female sexual behavior in this primitive eutherian mammal.     

The effect of a self-monitored relaxation breathing exercise on male adolescent aggressive behavior

This study sought to contribute to the identification of effective interventions in the area of male adolescent aggressive behavior. Existing research includes both group- and single-case studies implementing treatments which typically include an anger-management component and its attendant relaxation and stress-reduction techniques. The design of this study was single-subject with multiple baselines across 6 subjects on 2 behavioral measures. The setting was a residential juvenile justice program for male adolescents, and the treatment was a relaxation breathing exercise. The results of the study were mixed, with improvement on both behavioral measures in 2 of the 6 participants.     

Female perceptions of female and male managerial behavior

Nine branches of a large bank were investigated in a study designed to measure female subordinate reactions to male and female managers. Eighty percent of the female subordinates in the sample showed a preference for male managers. This result was not confounded by organizationally determined manager-subordinate relationships since subordinates were not assigned to a particular manager. Further analyses suggest that this preference for male managers was caused by situational variables rather than by sex differences. Although male and female managers did not differ with respect to age, education, career orientation, and organizational commitment, male managers had significantly more experience and reported having more influence than did the female managers.The author gratefully acknowledges the helpful comments of Charlie Summer, Tom Taber, and Nancy Napier, and the research assistance of Steve Green, Mike Novak, Kathie Verderber, and Bob Sinclair. An earlier version of this article was presented at the Academy of Management Meetings in New York, August 1982.