نتایج جستجو برای: sex preference
تعداد نتایج: 271586 فیلتر نتایج به سال:
In this paper, we examined both stated norms of sex preference and actual sex-biases in parental investment in a Tibetan pastoralist society. We collected detailed demographic data on infant mortality, infant feeding, the length of interbirth intervals, and a decision when giving gifts, to examine sex-biased parental investment. Our results indicate a mismatch between self-reported son preferen...
Using data from the 2001 National Family Planning and Reproductive Health Survey, this paper studies the relationship between son preference and induced abortion in rural China during periods with different birth control policies. The paper finds that temporal trends and patterns of variation in induced abortion and sex ratio at birth are fundamentally consistent. Among women with only two chil...
Physician gender is associated with differences in the male-to-female ratio between specialities and with preferred working hours. We explored how graduating students' sex or full-time or part-time preference influences their speciality choice, taking work-life issues into account. Graduating medical students at Radboud University Medical Centre, the Netherlands participated in a survey (2008-2...
Men who have sex with men (MSM) in China face a rapidly expanding HIV epidemic. Anal sex role plays a significant role in HIV infection. Research has already begun in China investigating the potential for circumcision-based interventions to slow the rise of HIV among Chinese MSM. Using peer referral recruitment, we sampled 491 men who reported anal sex role preference. We analyzed preferred ana...
Chinkara is classified as a vulnerable species (IUCN, 2009). Yet, there is a little information on its biological characteristics and habitat in Iran. This study focuses on the habitat preference and social pattern of this species in Dareh-Anjeer wildlife refuge in 2010-2011. We first determined habitat boundaries of Chinkara in the area. During the survey, 15 transects were located within diff...
Results: Out of the 263 eligible couples, 136 (52%) couples (male 61% and female 39%) were found to be contraceptive users. Sociodemographic factors significantly associated with current contraceptive use were age (21-25 years) (χ2=8.228, p-value=0.042), sex (males) (χ2=8.925, p-value= 0.003), education (literate) (χ2= 9.226, p-value= 0.026), family planning knowledge (χ2= 5.069, pvalue=0.024) ...
The present study entailed conducting a content analysis of 1,434 ads/profiles posted on one of the most popular "Men who have Sex with Men" (MSM) websites that specifically fosters unprotected sex. Ads/profiles were selected randomly based on the American ZIP code of residence (n = 1,316), with a randomly-drawn oversampling of profiles of men who self-identified as heterosexual or "curious" ra...
The present studies examined sex differences in object localization and recognition in C57BL/6 mice. Experiment 1 measured responses to spatial novelty (object displacement) and object novelty (object substitution). Males strongly preferred displaced and substituted objects over unchanged objects, whereas females showed a preference in only 1 measure of object novelty. Experiment 2 further exam...
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