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851.
McLeod K White V Mullins R Davey C Wakefield M Hill D 《The Journal of genetic psychology》2008,169(2):117-131
The smoking behavior of friends is a major risk factor for adolescent smoking uptake. To explore the social context of smoking experimentation and consolidation with a particular focus on friends, the authors interviewed both members of 14 young adult identical twin pairs who were discordant for smoking. The different smoking status of twins was connected to their different friendship groups and development of different identities. Smoking respondents gravitated to the behaviors and images of the peer group who smoked. Many nonsmokers felt strong pressure from their peers not to smoke and spoke about how the images conveyed by smoking were inconsistent with their peer group's image. Adolescents and young adults are aware of the messages that smoking can convey to others and exploit these images to construct a social identity. 相似文献
852.
INTERRESPONSE TIME STRUCTURES IN VARIABLE-RATIO AND VARIABLE-INTERVAL SCHEDULES 总被引:1,自引:1,他引:0
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Matthew T Bowers Jade Hill William L Palya 《Journal of the experimental analysis of behavior》2008,90(3):345-362
The interresponse-time structures of pigeon key pecking were examined under variable-ratio, variable-interval, and variable-interval plus linear feedback schedules. Whereas the variable-ratio and variable-interval plus linear feedback schedules generally resulted in a distinct group of short interresponse times and a broad distribution of longer interresponse times, the variable-interval schedules generally showed a much more continuous distribution of interresponse times. The results were taken to indicate that a log survivor analysis or double exponential fit of interresponse times may not be universally applicable to the task of demonstrating that operant behavior can be dichotomized into bouts of engagement and periods of disengagement. 相似文献
853.
Blake L Jones D Phillip Scoville E Jeffrey Hill Geniel Childs Joan M Leishman Kathryn S Nally 《Journal of family psychology》2008,22(5):774-783
This study examined the relationship of 2 types of workplace flexibility to work-family fit and work, personal, and marriage-family outcomes using data (N = 1,601) representative of employed persons in Singapore. We hypothesized that perceived and used workplace flexibility would be positively related to the study variables. Results derived from structural equation modeling revealed that perceived flexibility predicted work-family fit; however, used flexibility did not. Work-family fit related positively to each work, personal, and marriage-family outcome; however, workplace flexibility only predicted work and personal outcomes. Findings suggest work-family fit may be an important facilitating factor in the interface between work and family life, relating directly to marital satisfaction and satisfaction in other family relationships. Implications of these findings are discussed. 相似文献
854.
Faith E. Fletcher Paul Ndebele Maureen C. Kelley 《Theoretical medicine and bioethics》2008,29(5):307-330
The debate over how to best guide HIV-infected mothers in resource-poor settings on infant feeding is more than two decades
old. Globally, breastfeeding is responsible for approximately 300,000 HIV infections per year, while at the same time, UNICEF
estimates that not breastfeeding (formula feeding with contaminated water) is responsible for 1.5 million child deaths per
year. The largest burden of these infections and deaths occur in Sub-Saharan Africa. Using this region as an example of the
burden faced more generally in other resource-poor settings, we contrast the evolution of the clinical standard of care for
infant feeding with HIV-infected mothers in high-income countries to the current international clinical guidelines for HIV-infected
mothers and infant feeding in resource-poor settings. While the international guidelines of exclusive breastfeeding for a
6-month period seem to offer the least-worst strategy for reducing mother-to-child transmission of HIV during infancy while
conferring some immunity through breastfeeding post-6 months, we argue that the impact of the policy on mothers and healthcare
workers on the ground is not well understood. The harm reduction approach on the level of health policy translates into a
complicated, painful moral dilemma for HIV-positive mothers and those offering them guidance on infant feeding. We argue that
the underlying socio-economic disparities that continue to fuel the need for a harm reduction policy on infant feeding and
the harm to women and children justify: (1) that higher priority be given to solving the infant feeding dilemma with improved
data on safe feeding alternatives, and (2) support of innovative, community-driven solutions that address the particular economic
and cultural challenges that continue to result in HIV-transmission to children within these communities.
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Maureen C. KelleyEmail: |
855.
Perfectionism and burnout in junior elite soccer players: The mediating influence of unconditional self-acceptance 总被引:1,自引:0,他引:1
Andrew P. Hill Howard K. Hall Paul R. Appleton Stephen A. Kozub 《Psychology of sport and exercise》2008,9(5):630-644
ObjectivesIt has been argued that elite junior athletes may be especially vulnerable to the development of burnout [Coakley, D. (1992). Burnout among adolescent athletes: A personal failure or social problem. Sociology, 9, 271–285; Feigley, D. A. (1984). Psychological burnout in high-level athletes. The Physician and Sports Medicine, 12, 108–119; Raedeke, T. D. (1997). Is athlete burnout more than just stress? A sport commitment perspective. Journal of Sport and Exercise Psychology, 19, 396–418]. Few studies to date have examined the psychological mechanisms that may underpin this vulnerability. One exception was a study by Gould, Tuffrey, Udry, and Loehr [(1996). Burnout in competitive junior tennis players: I. A quantitative psychological assessment. The Sport Psychologist, 10, 332–340], which found that a form of perfectionism reflecting a preoccupation with avoiding mistakes differentiated between burnout and non-burnout tennis players. The first purpose of the present investigation was to extend this research and examine the influence of self-oriented and socially prescribed perfectionism on burnout in elite junior soccer players. A second purpose was to examine whether the association between perfectionism and burnout was mediated by unconditional self-acceptance.DesignA correlational design was employed.MethodOne hundred and fifty-one soccer players (M age=14.4 years, SD=2.4 years) completed an inventory that included Flett and Hewitt's (1991) Multidimensional Perfectionism Scale, Chamberlain and Haaga's (2003) Unconditional Self-acceptance Scale, and Raedeke and Smith's [(2001). Development and preliminary validation of an athlete burnout measure. Journal of Sport and Exercise Psychology, 23, 281–306] Athlete Burnout Questionnaire (ABQ).ResultsStructural equation modeling indicated that unconditional self-acceptance partially mediated the relationship between the two dimensions of perfectionism and athlete burnout. Contrary to the hypotheses, self-oriented perfectionism demonstrated both a positive indirect association with symptoms of burnout, as well as a direct inverse relationship.ConclusionThe findings provide support for the contention that a contingent sense of self-worth is central to both socially prescribed and self-oriented perfectionism [Flett, Besser, Davis, &; Hewitt (2003). Dimensions of perfectionism, unconditional self-acceptance, and depression. Journal of Rational-Emotive and Cognitive-Behavior Therapy, 21, 119–138; Flett, Hewitt, Oliver, &; MacDonald (2002). Perfectionism in children and their parents: A developmental analysis. In G. L. Flett &; P. Hewitt (Eds.), Perfectionism: Theory, research and treatment (pp. 89–132). Washington, DC: American Psychological Association], and that this association may underpin maladaptive achievement striving and increase vulnerability to athlete burnout. 相似文献
856.
Men’s adherence to masculine norms stressing sexual prowess may contribute to their adjustment to changes in sexual functioning following spinal cord injury. The authors test this hypothesis by examining the moderating role of men’s conformity to gender norms for sexual prowess on the relationship between sexual desire and depression. One hundred and sixteen male citizens of the United States with spinal cord injuries were recruited for participation in the internet-based survey. Results indicated that participants with strong sexual desire evinced higher rates of depression when they conformed to masculine norms emphasizing sexual prowess. Men with little reported sexual desire, by contrast, demonstrated lower rates of depression when they endorsed norms for prowess. Directions for future research and treatment interventions are offered. 相似文献
857.
Lateralisation of hand preference and manual dexterity are known to develop over childhood, while in adulthood strength of hand preference has been shown to interact with extrinsic task demands. Some evidence exists to suggest that strength of hand preference and motor skill may be related. In the current study a handedness inventory, midline crossing (QHP) and peg-moving tasks were used to investigate: (1) the development of hand preference between 4 and 11 years; (2) whether extrinsic task demands affect strength of hand preference, and (3) whether strength of hand preference was associated with manual dexterity. Younger children (4–5 years) showed weak hand preference in comparison to older children (8–11 years), and extrinsic task demands influenced willingness to cross the body’s midline with the preferred hand. Age and peg-moving speed were associated with midline crossing in certain task conditions. Overall, results suggest a coupling between manual dexterity and brain maturation in typical development. 相似文献
858.
Amy M. Burdette Christopher G. Ellison Terrence D. Hill Norval D. Glenn 《Journal for the scientific study of religion》2009,48(3):535-551
Recent attention from media, scholars, and religious leadership has focused on the dating activities of college students, particularly in relation to casual physical encounters or what some have termed "hooking up." In this article, we examine the impact of both individual and institutional religious involvement on "hooking up" in a national sample of college women ( N = 1,000). The results of our analysis reveal several important patterns. First, Catholic college women are more likely to have "hooked up" while at school than college women with no religious affiliation. Second, conservative Protestant college women are less likely to have "hooked up" while at school than college women with no religious affiliation; however, this difference is mediated or explained by church attendance, which is protective against "hooking up." Finally, women who attend colleges and universities with a Catholic affiliation are more likely to have hooked up while at school than women who attend academic institutions with no religious affiliation, net of individual-level religious involvement. 相似文献
859.
Eric D. Hill Heather K. Terrell Steven Hladkyj Craig T. Nagoshi 《British journal of psychology (London, England : 1953)》2009,100(4):675-698
Two studies examined correlates of the Narrative Emplotment Scale (NES), which measures the extent to which individuals perceive chance events and unchosen experiences as meaningfully connected. In Study 1 (N=99), the NES demonstrated adequate test–retest stability and good internal reliability. The scale was positively related to paranormal beliefs, mystical experiences, and absorption. In Study 2 (N=342), personality measures indicative of external locus of control, intrinsic religiosity, well‐being, satisfaction with life, and a measure of frequency of coincidence experience were all positively correlated with narrative emplotment, providing further support for the construct validity of the scale. In terms of the question of whether meaning making is predictive of better or worse psychological adjustment, analyses indicated that the relationship between narrative emplotment and psychological adjustment was moderated by individual differences in coping strategies. Path analysis indicated that emplotment was a mediator of the pathway between religiosity and well‐being. Emplotment had a negative effect on well‐being through chance locus of control. These analyses suggest that this type of meaning‐making is an important variable for understanding religious/spiritual beliefs and their influence on psychological adjustment. 相似文献
860.
N. Sharon Hill Kathryn M. Bartol Paul E. Tesluk Gosia A. Langa 《Organizational behavior and human decision processes》2009,108(2):187-201
Using adaptive structuration theory as a framework [DeSanctis, G., & Poole, M. S. (1994). Capturing the complexity in advanced technology use: Adaptive structuration theory. Organization Science, 5(2), 121–147], we examined the influence of organizational context (competitive versus cooperative) and introductory meeting communication medium (face-to-face versus electronic) on the development of trust and collaborative behaviors of dyads communicating electronically. Based on a sample of 208 senior business students operating in computer-mediated (CM) dyads while performing a strategic decision-making simulation, we found that context, introductory communication medium, and time interacted to influence trust and collaborative behaviors. The pattern of development of trust and collaborative behaviors differed for the same introductory communication medium in different context conditions. Further, the level of trust and collaboration for dyad members in the competitive/electronic introductory meeting condition lagged significantly behind those in the other conditions. The findings suggest that introductory face-to-face interaction plays a more important role in facilitating the development of trust and collaboration in a CM environment when the context is competitive. 相似文献