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891.
This study used multiple-group structural equation modeling to test a model explaining the association between exposure to televised sexual content and initiation of intercourse among an ethnically diverse national sample of 1,292 adolescents. The authors hypothesized, on the basis of social-cognitive theory, that exposure to televised sexual content would influence adolescents' safe-sex self-efficacy, sex-related outcome expectancies, and perceived peer norms regarding sex, and that each of these would, in turn, influence intercourse initiation. Findings support a model in which the relationship between exposure to TV's sexual content and intercourse initiation is mediated by safe-sex self-efficacy among African Americans and Whites but not among Hispanics. Outcome expectancies and perceived peer norms may also mediate the link between exposure and intercourse initiation among all 3 racial/ethnic groups, although evidence of this could not be confirmed.  相似文献   
892.
Psychobiology of altered states of consciousness   总被引:4,自引:0,他引:4  
The article reviews the current knowledge regarding altered states of consciousness (ASC) (a) occurring spontaneously, (b) evoked by physical and physiological stimulation, (c) induced by psychological means, and (d) caused by diseases. The emphasis is laid on psychological and neurobiological approaches. The phenomenological analysis of the multiple ASC resulted in 4 dimensions by which they can be characterized: activation, awareness span, self-awareness, and sensory dynamics. The neurophysiological approach revealed that the different states of consciousness are mainly brought about by a compromised brain structure, transient changes in brain dynamics (disconnectivity), and neurochemical and metabolic processes. Besides these severe alterations, environmental stimuli, mental practices, and techniques of self-control can also temporarily alter brain functioning and conscious experience.  相似文献   
893.
Optimism is usually associated with better psychological and physiological adjustment to stressors, but some contradictory findings exist. The purpose of this study was to investigate how optimism could result in negative immunological changes following difficult stressors. Because optimists are likely to see positive outcomes as attainable, they may invest greater effort to achieve their goals. It is proposed that such engagement would be more physiologically demanding when pursuing difficult goals. Participants (N = 54) worked on 11 difficult or insoluble anagrams. Optimism when combined with high self-awareness increased time spent working on the anagrams and skin conductance and salivary cortisol during the recovery period. The results support the notion that the increased engagement that arises from optimism may lead to short-term physiological costs.  相似文献   
894.
Successfully integrating workers with disabilities into their organizations is both a challenge and an opportunity facing managers today. Despite laws and business practices prohibiting discrimination against those with disabilities, people with disabilities are consistently underutilized in organizations. This article applies theories of demographic diversity in organizations to assert that a richer understanding of organizational cultures and their implications for workers with disabilities may shed light on the question of how and why workers with disabilities may be excluded from mainstream work experiences and career progression. The article briefly reviews business arguments that support integration of workers with disabilities into organizations based on their contribution to the overall diversity within the organization, and reviews complications in the research on diversity to date that leave important questions of the potential gains or detriments from increasing this diversity unanswered. The article then goes on to introduce organizational culture as an underinvestigated but likely potent tool in explaining how and when workers who are demographically different, in general, and with disabilities, specifically, may be successfully integrated into an organization's work force. The article introduces three types of organizational culture: culture of differentiation, culture of unity, and culture of integration. Each is explained in terms of its content and its implications for managing diversity. A discussion of the implications of culture as a primary tool for managing the integration of workers with disabilities concludes the paper.  相似文献   
895.
Magistrates records from the English town of Portsmouth show the towns women to have been exceptionally violent. Women accounted, on average, for just over 31% of all assaults on record for the years 1653 to 1781. We used a combination of quantitative and qualitative methods to compare the fighting styles of men and women and to examine the extent to which these were gendered. Particular attention was paid to levels of violence between pairs of brawlers. The most common form of violence was male-on-male (2,666 cases), followed by female-on-female (1,690), male-on-female (1,675), and female-on-male (299). Of these pairings, female-on-male assaults were the most violent, as measured by the types of weapons used by the aggressors, and female-on-female pairings were the least violent.Funding was provided by grant 410-2000-0467 from the Social Sciences and Humanities Research Council of Canada. The authors are profoundly grateful to the gracious and highly capable staff of Portsmouths Museums and Records Service, including, most notably, Michael Gunton, Diana Gregg, Donna Malcolmson, and Sarah Speller. Special thanks also go to the team of volunteers who transcribed the towns sessions papers, thus greatly facilitating our entry of the same into a database. They were, in alphabetical order, Kate Beatty, Barbara Gower, Ursula Heinrich, Pam Honeysett, George Hothersall, Marjorie Hothersall, Una Lowe, Betty Richardson, Marjorie Ripper, and Brenda Whorton. There was one other volunteer: an inmate at the Kingston Prison just outside Portsmouth. Back in Toronto, several more people assisted in entering the records into a database. They were, in alphabetical order, Joanne Cordingley, James Hewitson, Allyson Lunny, Yvonne Pelletier, and Victoria Vaag.  相似文献   
896.
Attention deficit hyperactive disorder (ADHD) is associated with elevated levels of substance abuse, but the cognitive linkages involved have been little explored. The present study builds upon earlier work showing that more gestalt, as opposed to feature-intensive, styles of processing are conductive to substance abuse, especially in those with ADHD symptoms. The work reported here indicates that a protective factor against substance abuse may lie in relatively efficient heuristic processing, especially synthetic or inferential heuristic processing, but further demonstrates that those with ADHD symptoms tend to have poorer abilities in this regard, even at the subclinical, nondiagnosed level. Results are discussed in terms of the gestalt/featureintensive processing theory of cognition.  相似文献   
897.
With increasing life expectancy, the incidence of chronic illness and chronic pain also increase. Chronic pain robs older people of their quality of life, and limits functional mobility and ambulation, which leads to muscle atrophy. Older people are often reluctant to request pain relief, attempting to endure pain as a "normal" part of ageing. Innovative non-pharmacological interventions in pain management are appealing. In this study, affective images and pictures were used in 15 elderly patients (12 female and three male) in chronic pain who needed to perform stretching and standing exercises in their physiotherapy sessions. Pain scores were measured by the Visual Analogue Scale (VAS), and health-related quality of life was measured by the Medical Outcomes Study Short Form 36 (SF-36). VAS and SF-36 were administered in weeks 1 and in 6. Pain scores were measured during physiotherapy session in the following weeks. There was a significant decreased in VAS from week 1 to week 6 (t = 3.607; df = 14; p < 0.05). Also, a significant decrease in VAS occurred when the patients were watching affective pictures while performing the physiotherapy exercise in weeks 2 and 3, but not in weeks 4 and 5. SF-36 increased in week 6, which indicated an increase in health-related quality of life, though not statistically significant. Affective images and pictures appear to be an effective non-pharmacological intervention in pain management for the older person.  相似文献   
898.
Although 9-month-old infants are capable of retaining temporally ordered information over long delays, this ability is relatively fragile. It may be possible to facilitate long-term retention by allowing infants to imitate event sequences immediately after their presentation. The effects of imitation on immediate and delayed recognition and on long-term recall were investigated using event-related potentials (ERPs) and elicited imitation, respectively. Mnemonic facilitation resulting from the opportunity to imitate was apparent using both assessments. ERP assessments at immediate and delayed recognition tests suggested that infants who were allowed to imitate had stronger memory representations of familiar stimuli relative to infants who only viewed the presentation of the events. In addition, infants who were allowed to imitate evidenced higher levels of ordered recall after 1 month relative to infants who only watched the experimenter's demonstration. Therefore, imitation proved to have beneficial effects on explicit memory in 9(1/2)-month-olds, providing evidence of its effectiveness as a tool to augment mnemonic capabilities in infancy.  相似文献   
899.
900.
Given the calamities involved in climate change and the impact it is having – and will continue to have, on lives driven towards subsistence – what can be said about the goodness of creation? This essay explores how privileged theologians might rethink the notion of the common good in a situation where the majority are under-privileged. It argues for a need for imaginative investment to develop empathy, not sympathy; a need to listen in ways that are attentive and tending; and for a learning to accompany, such that dependence can be empowering when recognised and practised as mutual. Theologically, the sharing and accompaniment necessary has to be appreciated as inhering to the existence of all things, such that relationality and dependence are living expressions of the goodness of creation. Such sharing and accompaniment are expressions and incarnations of the uncreated goodness of the Triune God, operating in and through the ongoing processes of creation.  相似文献   
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