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Relatively little is known about condom use among bisexual men as separate and distinct from exclusively homosexual and heterosexual men. Most previous research on bisexual men has relied on nonprobabilistic, high-risk samples with limited generalizability. We examined the relationship between behavioral bisexuality and condom use in the 2002 cycle of the National Survey of Family Growth (NSFG). Bisexually active men positively differed from heterosexually and homosexually active men on every indicator of confounding risk. Bisexually active men, however, did not report using condoms less often than other men during their last sexual encounters with males and females. Indeed, with female partners, bisexually active men reported higher rates of condom use than did other men. These relationships remained when all sociodemographic and confounding risk factors were held constant. Our results suggest that caution must be used when making assumptions about condom use in the general population of bisexual men from nonprobabilistic samples.  相似文献   
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Research has shown that performance on the Assessment of Basic Learning Abilities (ABLA) test correlates with language assessments for persons with developmental disabilities. This study investigated whether performance on ABLA Level 6, an auditory-visual discrimination, predicts performance on a receptive language task with persons with severe developmental disabilities. Five participants who passed ABLA Level 6, and five who failed ABLA Level 6, were each tested on five 2-choice discriminations that required them to point to pictures of common objects after hearing their names. Four of the five participants who had failed ABLA Level 6 failed all of the receptive name recognition tasks. All five participants who had passed ABLA Level 6 passed all of the name recognition tasks. The practical implications of these results are discussed.  相似文献   
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This paper describes the process and some findings of a collaborative project between the New South Wales Commission for Children and Young People and researchers at the Social Justice and Social Change Research Centre, at the University of Western Sydney. The project was designed to inform the Commission in implementing its legislative mandate to develop a set of well-being indicators to monitor children's well-being over time. Placing children centrally as research participants was fundamental to the methodological approach of the project in which children's understandings of what contributes to their well-being were explored through qualitative methods. We discuss the epistemological and methodological approaches used in the project, in the context of other, earlier research towards the development of children's well-being indicators. Some of the early findings from the collaborative project are outlined and an example given of the way in which knowledge produced by a research approach which places children centrally, differs from and is similar to knowledge produced by more traditional child social indicator research. The paper ends with a discussion of some of the implications and challenges posed by reflecting on the research process and early findings from the research.  相似文献   
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This paper considers the three‐parameter family of symmetric unimodal distributions obtained by wrapping the location‐scale extension of Student's t distribution onto the unit circle. The family contains the wrapped normal and wrapped Cauchy distributions as special cases, and can be used to closely approximate the von Mises distribution. In general, the density of the family can only be represented in terms of an infinite summation, but its trigonometric moments are relatively simple expressions involving modified Bessel functions. Point estimation of the parameters is considered, and likelihood‐based methods are used to fit the family of distributions in an illustrative analysis of cross‐bed measurements. The use of the family as a means of approximating the von Mises distribution is investigated in detail, and new efficient algorithms are proposed for the generation of approximate pseudo‐random von Mises variates.  相似文献   
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Abstract

Objectives: To explore perceptions of condoms associated with complete use and evaluate relationships between condom perceptions, condom use, and sexual quality.

Methods: Using data from a U. S. nationally representative probability sample, we assessed individuals’ condom use perceptions and related characteristics of their most recent sexual event through bivariate and regression analyses (n?=?234).

Results: Most participants reported complete condom use and neutral or positive perceptions of condoms. Though incomplete use was associated with orgasm among women, arousal and pleasure did not differ by gender or duration of condom use.

Conclusions: We found no evidence that delayed application or early condom removal increased sexual arousal or pleasure, which may help sexual health promotion interventions address negative cultural ideas about condoms.  相似文献   
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