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PubMed2006

Hostile sexism, type of rape, and self-reported rape proclivity within a sample of Zimbabwean males.

The role of hostile sexism in accounting for rape proclivity among men was investigated using a sample of Zimbabwean students. Participants were presented with either an acquaintance rape or a stranger rape scenario and asked to respond to five questions about the scenario designed to assess rape proclivity. As expected, a significant relationship between hostile sexism and rape proclivity was obtained in the acquaintance rape but not the stranger rape condition. These results replicate previous research and suggest that hostile sexists are more likely to express their hostility toward women in situations where such behavior might be perceived as acceptable.

Adult↗
PubMed1999

The impact of market-based 'reform' on cultural values in health care.

The many issues managed care poses for providers and health networks are crystallized in the moral problems occasioned by its shifting of the financial risks of care from insurer to provider. The issues occasioned by market-based reform include: the problems presented by clashes between public expectations and payer restrictions; the corporatization of health service delivery and the cultural shift from humanitarian endeavor to business enterprise the depersonalization of treatment as time and money constraints stretch resources, and the culture rewards efficient "business-like" behavior the underfunding of care for the poor and uninsured, even as these populations grow the restructuring of care and reengineering of healthcare roles as the emphasis shifts from quality of care to conservation of resources rapid mergers of both health plans and institutional providers with all the inherent turmoil as rules change, services are eliminated, and support services are minimized to save money the unhealthy competition inherent in market-based reform that posits profit taking and market share as the measures of successful performance the undermining of the professional ethic of advocacy the use of incentives that pander to greed and self-interest. The costs of sophisticated technologies and the ongoing care of increasingly fragile patients have pulled many other elements into what previously were considered "privileged" professional interactions. The fact that very few citizens indeed could pay out-of-pocket for the treatment and ongoing care they might need led to social involvement (few people remember that both widespread health insurance and public programs are relatively recent phenomena--only about 30 years old). However, whether in tax dollars or insurance premiums, other people's money is being spent on the patient's care. Clearly, those "other people" never intended to give either the patient or the professional open-ended access to their collective pocketbooks. Just what form their involvement ought to take is being tested as "managed care" attempts to control the costs. What limits are acceptable to providers?: lower profit margins? quality controls? acceptable risk levels? To patients?: restricted choice? restricted mobility? restricted access to high tech? And to the general public?: decreased access to high tech? higher taxes? underserved populations? Abandonment of the sick or poor? Which "techniques" are acceptable, and which are not?: risk-sharing with providers? financial incentives for decision makers? rationing access? imposing behavioral parameters? The issues posed by market-based managed care cannot be adequately addressed merely in terms of social resources, nor will answers be found in subordinating human rights to practical materialism. Negotiating ethical guidelines for the "safe" handling of such problems to the good of individuals and of society requires a revitalization of the "old" values: the old commitment to master craftsmanship and altruism, the old emphasis on patient advocacy and human rights. However, these old values must be applied with the "new" knowledge of lifestyle choices (and thus personal responsibility), likely outcomes (and thus reasonable options), and the limits of success (and thus fair redeployment of health resources).

Attitude to Health↗
PubMed2006

Exchange, affiliation, and protective interventions in semifree-ranging brown capuchin monkeys (Cebus apella).

The "social intelligence" hypothesis proposes that intelligence evolved as a consequence of the need for behavioral maneuvering to deal with the complexities of social life. As a result, coalitions have received considerable attention. Here we present the patterns of coalitionary behavior observed in a semifree-ranging group of Cebus apella and explore the effects of kinship, spatial proximity, and rank. In contrast to descriptions of Old World monkeys and to some descriptions of capuchins, kinship did not influence the pattern of coalitionary behavior, although individuals tended to help those that remained in close proximity. Rank had the greatest influence on coalitions: those that interfered in conflicts (often the alpha) were higher ranking than both contestants and supported the most subordinate (younger) interactant. However, rank did not influence the coalitionary support when conflicts involved only adults. We found no evidence that individuals were making use of triadic knowledge, and most of the coalitions can best be described as protective interventions involving immatures. The overall low rate of coalitions may be due to a period of social stability.

Age Factors↗
PubMed1983

Male acceleration of puberty in female mice (Mus musculus).

Nine experiments were performed to investigate various aspects of the acceleration of puberty in female house mice produced by the presence of a male mouse or urine from males. The findings include the following: (a) Grouping males has no effect on the urinary chemosignal that accelerates puberty except that (b) urine from dominant males produces greater acceleration than urine from subordinates. (c) Young female mice must be exposed to the male urine for at least 2-3 hr/day or to the presence of a male for 1 hr/day to produce acceleration of first vaginal estrus. (d) Females are accelerated to the same extent in attaining puberty whether treated with urine from the same male or a different male each day. (e) Urine from the father or a full brother, or the presence of those close relatives, exerts no differential acceleratory or retarding effect on puberty when compared with urine from or the presence of unrelated males. (f) Excreted or bladder urine from adrenalectomized males accelerates puberty to the same extent as urine from intact males, but (g) the presence of an adrenalectomized male does not produce the same degree of acceleration that occurs when an intact male is present. (h) Behavioral observations indicate that adrenalectomized males pursue young females less and attempt fewer mounts during a brief test period. Together, these findings have some important consequences with respect to our understanding of both the mechanisms of acceleration of puberty in the house mouse and the population and reproductive biology of these mice.

Adrenal Cortex Hormones↗
PubMed2005

Short communication: Effect of feed barrier design on the behavior of loose-housed lactating dairy cows.

The objective of this study was to evaluate the effects of 2 feed barrier systems on feeding and social behavior of dairy cows. Forty-eight lactating Holstein cows were subjected to each of 2 treatments in a cross-over design. The treatments were 2 types of feed-line barriers: 1) post-and-rail, and 2) headlock. Time-lapse video was used to quantify the feeding behavior and incidence of aggressive displacements of the cows at the feed bunk. Average daily feeding time did not differ when cows used the headlock barrier compared with the post-and-rail barrier. However, there were certain changes in feeding time during periods of peak feeding activity: cows that had lower feeding times relative to group mates when using the post-and-rail barrier showed more similar feeding times to group mates when using the headlock barrier. There were 21% fewer displacements at the feed bunk when cows accessed feed by the headlock barrier compared with the post-and-rail barrier. These results suggest that using a headlock barrier reduces aggression at the feed bunk and improves access to feed for socially subordinate cows during peak feeding periods.

Aggression↗
PubMedDate not supplied

Sexual and aggressive behaviour in social groups of talapoin monkeys.

In social groups not all monkeys are equal, in terms of either their behaviour or their endocrine status. When a dominant monkey is compared with one that is subordinate the level of sexual behaviour is high in the dominant and low in the subordinate monkey, while levels of aggression received follow an inverse pattern. Attention in terms of visual monitoring is primarily focused on the dominant animal even when overt aggression is extremely low. Cortisol and prolactin concentrations tend to be higher in subordinate monkeys while only the dominant male shows elevated testosterone levels during group interactions with attractive females. A question of some importance is whether these differences in endocrine status are a determinant of the differences in behaviour or whether they reflect the behaviour and, if the latter, to what purpose. Recent attempts to answer this problem have focused on the hypothalmo-pituitary axis in order to examine whether differences in behaviour between dominant and subordinate monkeys are reflected in differences in its responsiveness to endocrine changes.

Aggression↗
PubMed1990

Sources of variation in interbirth intervals among captive bonnet macaques (Macaca radiata).

Female fitness is a function of variation in the length of females' reproductive careers, the viability of their offspring, and the frequency with which they give birth. Infant loss shortens interbirth intervals in most primate species, but we know considerably less about other factors that contribute to variation in the length of interbirth intervals within groups. In one large captive group of bonnet macaques, maternal parity, age, experience, family size, and recent reproductive history are all associated with variation in the length of intervals that follow the birth of surviving infants. Primiparous females have the longest interbirth intervals, while multiparous females who have produced surviving infants in the past and have raised their last infant successfully have the shortest interbirth intervals. Infant sex and maternal rank have no direct effect upon the length of interbirth intervals. One of the underlying causes of variation in the length of interbirth intervals after surviving births seems to be variation in the timing of conceptions among females. Females who conceive early in the mating season tend to have shorter interbirth intervals than other females. However, females who are multiparous, experienced, and have recently raised infants have late conceptions and short interbirth intervals.

Age Factors↗
PubMed2006

Relations between social status and the gonadotrophin-releasing hormone system in females of two cooperatively breeding species of African mole-rats, Cryptomys hottentotus hottentotus and Cryptomys hottentotus pretoriae: neuroanatomical and neuroendocrinological studies.

In common (Cryptomys hottentotus hottentotus) and highveld (Cryptomys hottentotus pretoriae) mole-rats, reproduction is subject to two forms of regulation in addition to incest avoidance. These are the only social bathyergids known to restrict breeding to a particular season; furthermore, subordinate members of their colonies show suppressed reproduction throughout the year. Females from both species were assessed and compared for social and seasonal effects on the gonadotrophin-releasing hormone (GnRH) system. GnRH-immunoreactive (ir) structures were visualized immunohistochemically; GnRH content was determined by radioimmunoassay. In both species, GnRH-ir cell bodies and processes are loosely distributed along the septopreopticoinfundibular continuum, with dense fiber aggregations in the region of the organum vasculosum of the lamina terminalis and median eminence. The two species differ in the rostrocaudal distribution of their GnRH-ir cell bodies. In highveld mole-rats, most of these cells are in the septal/preoptic area; in common mole-rats, more than half of them are in the mediobasal hypothalamus. Compared with common mole-rats, highveld mole-rats have a greater total number of GnRH-ir cell bodies, higher GnRH content, and more intense GnRH immunoreactivity in the median eminence. Within highveld colonies, the nonreproductive females have larger GnRH-ir cell bodies, more intense GnRH immunoreactivity in the median eminence, and higher GnRH content than the reproductive females; these findings suggest inhibited release of GnRH in the nonreproductive, subordinate females. In contrast, in common mole-rat females, neither status nor season appears to affect the investigated parameters of the GnRH system; this suggests a predominantly behavioral basis to their suppressed reproduction.

Animals↗
PubMed1995

Socially defeated male rats display a blunted adrenocortical response to a low dose of 8-OH-DPAT.

The study examined in male Wistar rats the influence of social defeat on the neuroendocrine stress response system using injection of the 5-HT1A receptor agonist, 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT), as the pharmacological challenge. Social defeat was defined by the submissive postures displayed by the Wistar rats which were threatened and attacked by Tryon Maze Dull S3 rats for 10 min. 18-20 h after social defeat, the defeated rats were injected intravenously (i.v.) with a low and high dose of 8-OH-DPAT in their home cages. Blood samples were withdrawn from the freely moving cannulated rats for determination of plasma corticosterone and catecholamines. The corticosterone response to the low dose of 8-OH-DPAT (0.05 mg/kg, i.v.) was significantly diminished in the defeated rats as compared to the controls, but this dose failed to affect catecholamine concentrations. The high dose of 8-OH-DPAT (0.15 mg/kg, i.v.) significantly elevated corticosterone and adrenaline levels in defeated and control rats to the same extent, whereas no effect on noradrenaline was found. The present data thus indicate that social defeat blunts 5-HT1A receptor-mediated adrenocortical activation probably via a decrease in the sensitivity of a population of postsynaptic 5-HT receptors.

8-Hydroxy-2-(di-n-propylamino)tetralin↗
PubMed1995

Blood pressure via telemetry during social confrontations in rats: effects of clonidine.

Male Long-Evans rats were implanted with blood pressure transmitters and introduced as intruders for 60 min into the home cage of a reproductively active resident male rat. Physical interaction ended after 3-5 min when the intruder displayed clear submissive behaviors. A protective wire cage was placed over the intruder until the animal was returned to its home cage. Systolic (+29.3 +/- 3.6 mmHg) and diastolic (+25.7 +/- 3.7 mmHg) blood pressures, pulse pressure (+7.3 +/- 2.0 mmHg), and heart rate (+129.0 +/- 12.6 BPM) peaked in the intruder rats during the defeat and did not fully return to control levels until return to the home cage. These acute changes as well as the heart rate and blood pressure baselines did not change when the confrontations were repeated on alternating days for a maximum of three trials per week. Pretreatment with clonidine (0.01, 0.03, 0.06, and 0.1 mg/kg) led to a dose-dependent decrease in the heart rate response but blood pressure was reduced similarly for all doses. We conclude that acute "defeat" can lead to an abrupt, large increase in blood pressure and heart rate in normotensive, Long-Evans rats that is sustained even in the absence of physical contact with the threatening resident. This response is diminished but not prevented by administration of clonidine.

Aggression↗
PubMed1995

Patterns of adrenocorticotropin secretagog release in response to social interactions and various degrees of novelty.

Colchicine blockade of axonal transport from the paraventricular nucleus to the median eminence was used to indirectly infer ACTH secretagog release in response to the psychological stressors of social interactions and various degrees of novelty. Placing a rat in a new cage with either the smell or presence of a novel conspecific decreased arginine vasopressin and oxytocin (OT) contents, but not corticotropin-releasing factor content. Secretagog contents were unchanged in rats in their home cages faced with a novel conspecific. Secretagog release during social stress is thus primarily a function of being in a novel setting. For different degrees of novelty, rats were placed in either a novel cage, a novel bucket, or a novel bucket smelling of another rat. Whereas secretagog contents were unchanged with a novel cage, OT content alone decreased in response to both the bucket and the unclean bucket. Despite a graded corticosterone response, there was no distinction in the OT response, suggesting that the colchicine technique cannot accurately reflect gradations of stressors.

Adaptation, Psychological↗
PubMed1997

'Appropriate' male and female safer sexual behaviour in heterosexual relationships.

This paper is an attempt to explore how traditional gender role socialization runs counter to safer sexual practices. Structured interviews (N = 448 sexual encounters) were conducted with heterosexual young adults in 'natural settings' such as summer music festivals and youth houses/youth clubs. Congruent with a perspective of gender role theory, females were found to care more about safer sex. The data do not suggest that females are forced to rely on less efficient ways of practising safer sex, but they have to try harder to be successful. Males may implement safer sex in an encounter without negotiation, because it is obvious, or they just have to mention it at the moment of sexual intercourse. Females have to start negotiating safer sex long before the actual encounter in order to be as successful as males. There is one important critical situation for females, notably the encounter in which they perceive the male to be dominant.

Adult↗
PubMed1978

A multi-method investigation of two family constructs.

Two family constructs--prominence and interpersonal distance--are examined. Their origins are traced in the experimental and theoretical literature. The validity of each construct is investigated using data obtained from 15 families with a symptom-bearing child. Validity is supported in both cases through the occurrence of significant correlations among different measures of the same construct. It is suggested that the current distress of the families being studied may have increased the clarity of the prominence hierarchies and dyadic distances that emerged.

Dominance-Subordination↗
PubMed1999

Teaching professionalism in undergraduate medical education.

CONTEXT: There is a growing consensus among medical educators that to promote the professional development of medical students, schools of medicine should provide explicit learning experiences in professionalism. OBJECTIVE: To determine whether and how schools of medicine were teaching professionalism in the 1998-1999 academic year. DESIGN, SETTING, AND PARTICIPANTS: A 2-stage survey was sent to 125 US medical schools in the fall of 1998. A total of 116 (92.3%) responded to the first stage of the survey. The second survey led to a qualitative analysis of curriculum materials submitted by 41 schools. MAIN OUTCOME MEASURES: Presence or absence of learning experiences (didactic or experiential) in undergraduate medical curriculum explicitly intended to promote professionalism in medical students, with curriculum evaluation based on 4 attributes commonly recognized as essential to professionalism: subordination of one's self-interests, adherence to high ethical and moral standards, response to societal needs, and demonstration of evincible core humanistic values. RESULTS: Of the 116 responding medical schools, 104 (89.7%) reported that they offer some formal instruction related to professionalism. Fewer schools have explicit methods for assessing professional behaviors (n = 64 [55.2%]) or conduct targeted faculty development programs (n = 39 [33.6%]). Schools use diverse strategies to promote professionalism, ranging from an isolated white-coat ceremony or other orientation experience (n = 71 [78.9%]) to an integrated sequence of courses over multiple years of the curriculum (n = 25 [27.8%]). Of the 41 schools that provided curriculum materials, 27 (65.9%) addressed subordinating self-interests; 31 (75.6%), adhering to high ethical and moral standards; 17 (41.5%), responding to societal needs; and 22 (53.7%), evincing core humanistic values. CONCLUSIONS: Our results suggest that the teaching of professionalism in undergraduate medical education varies widely. Although most medical schools in the United States now address this important topic in some manner, the strategies used to teach professionalism may not always be adequate.

Clinical Competence↗
PubMed2005

Glucocorticoids of bison bulls in relation to social status.

A primary response to stress is an increase in circulating adrenal glucocorticoids (GC) such as cortisol. Two hypotheses propose differential stress responses to agonistic and aggressive interactions in social groups. If subordinate animals are subjected to social and psychological stressors leading to chronic GC elevation, the 'stress of subordination' hypothesis predicts that GCs will be higher in subordinates than dominants. Alternatively, if dominant animals are subject to physiological stressors (e.g., fight at higher rates than subordinates) or hierarchies are unstable, the 'stress of domination' hypothesis predicts higher GCs in dominant individuals. Both models predict that GC levels will peak during the breeding season. We tested these predictions in bison bulls (Bison bison) using fecal steroid analysis to characterize GC concentration and behavioral observations to determine dominance rank, copulatory success, and tending status of bulls. Fecal samples were collected during 2003 from adult bison bulls during pre-rut (June), rut (July-August), and post-rut (September). Matched sample data indicated that mean GC levels (ng/g feces) of bulls strongly peaked during the 4-week rut, doubling from pre-rut to rut and then declining again during post-rut. High ranked dominant bulls maintained higher GC levels than lower ranked subordinate bulls. Dominance rank was positively correlated with copulatory success and age, and dominant bulls were more likely to tend (guard) cows as they approached estrus. There was a positive correlation between GC level and copulatory success, with prime-aged bulls (> or =7 years) obtaining the most copulations. GC levels were positively correlated with bull androgen levels determined in a previous study. These results support the 'stress of domination' hypothesis, indicating that dominant bison bulls pay a significant physiological price for high social status and the opportunity to mate.

Aggression↗
PubMed1991

AIDS and the social side of health.

The presence of AIDS in epidemic proportions in the African context can directly and indirectly affect the health of the majority of people. AIDS highlights the social side of health, those factors of a social nature that enhances or potentially weakens the health status of individuals and whole communities. Attention solely on a limited range of social behaviors or health activities may obscure this fact with the consequence that the spread of HIV/AIDS is not controlled. Focus is turned in this paper to the stress in AIDS policies and programs on terminal illness more than on terminal life. This approach, if not altered, can increase the vulnerability of persons who live with AIDS. The influence that the subordination of women exerts on the spread of HIV infection calls into question the traditions of male sexuality. The adverse effects of HIV on the health of men as well as women suggest the urgent need for re-assessment of the concepts of maleness held in the region. Change in male attitudes and behavior may require change in legislation and a resocialization to a new orientation in male/female relationship. The health of family members may be endangered because of the demands of the care-giving role. Traditional community mechanisms for coping with illnesses may be inadequate in the face of an epidemic. Rather than the pursuit of strategies to assist categories of selected persons, such as widows or orphans, whole affected communities will need to be approached as weakened families. It is questioned whether the health care system can adequately respond to the health requirements of the many when resources are drained, health care providers are overburdened, and primary health care is fragmented because of AIDS. The social dimension of health makes it imperative that policy and program measures to stop AIDS be a collective, balanced social and biomedical scientific effort.

Acquired Immunodeficiency Syndrome↗