DR Bolling,B Voeller - 《Arch Sex Behav》 被引量: 304发表: 1991年 Sex acts, sex partners, and sex budgets: implications for risk factor analysis and estimation of HIV transmission probabilities. Many epidemiological studies have identified the number of sex partners as a risk factor for the ...
In Shona, there is no formal term for anal sex and phrasing this activity in a way that was both acceptable and understood proved particularly challenging. Cognitive interviewing is useful in exploring the underlying thought processes and the cultural context behind question responses. Examining the ...
In limning the etymology of the concept of the life course, Alwin makes a number of prime points and paves the way toward further conceptual development. For me, one of the more prominent takeaway messages is that there is no standard mo... Jon,Hendricks - 《J Gerontol B Psychol Sci So...
The expansion of legal rights to same-sex couples is afoot in a number of Western countries. The effects of this rollout are not only important in their own right but can also provide a window on the institution of marriage and the right... L Edlund,M Muellersmith,JD Iceland,... - 《...
What is Sexual Satisfaction? Thematic Analysis of Lay People's Definitions Sexual satisfaction is an important indicator of sexual health and is strongly associated with relationship satisfaction. However, research exploring lay d... Patrícia,Monteiro,Pascoal,... - 《Journal of Sex Research》 被引量...
Parents were the least reported source of sex education for all four ethnic groups, with the majority of respondents reporting school as their source of sex education. Respondents who reported family as their source of abstinence education had a sexual debut of 6months later than those who did ...
Sex between homosexual partners in anything other than a mutually monogamous relationship between 2 HIV-negative people involves some risk of virus transmission; a condom must be used during anal intercourse to be considered safe. People, however, have the right to take risks and harm reduction is...
research with these organisms supports a central tenet of sexual selection theory: that it is the relative investment of the sexes in offspring that controls the number of males and females available for mating, and thus is the main determinant of the degree of sexual competition in each sex. ...
SUMMARY We analyse the portrayal of sex and drug use in the most popular movies of the last 20 years using the Internet Movie Database list of the top 200 movies of all time. Films released or set prior to the HIV era (pre 1983), animated, not about humans or G/PG rated, were被...
Identifying the stage and developmental history of grasshoppers (Orthoptera: Acrididae) in a species with a variable number of instars Populations in the south and east of Britain have a higher proportion of females with five instars. In the laboratory, female development can be manipulated by rea...