نتایج جستجو برای: opposite sex relations
تعداد نتایج: 405679 فیلتر نتایج به سال:
BACKGROUND Increasing evidence shows that some cancers originate in utero. It is hypothesized that elevated exposure to some steroid hormones might increase cancer risk and that hormone transfer between twin fetuses could result in different prenatal exposure to testosterone. METHODS This large-scale prospective twin study compared opposite-sex (OS) and same-sex (SS) twins to test the impact ...
Research suggests that prenatal testosterone exposure may masculinize (i.e., lower) disordered eating (DE) attitudes and behaviors and influence the lower prevalence of eating disorders in males versus females. How or when these effects become prominent remains unknown, although puberty may be a critical developmental period. In animals, the masculinizing effects of early testosterone exposure ...
abstract: as a social and cultural behavior,the relationship between boy and girl is almost a new phenomena in our society.it seems to cause many worries at the various social level by reason of creating some of issues and problems.this research focuses on two main purpose:firstly,to examine girls’ attitude toward relationship with opposite sex and to explore effective elements upon the girl’s ...
Sharing of intrauterine environment in twins of opposite sex has been hypothesized to result in masculinization of the female twin. We tested this hypothesis by comparing strength (maximum hand-grip pressure) and various anthropometric measures in a newly established survey panel comprising 4,314 middle-aged twins identified through a Danish population-based twin registry. Sex- and zygosity-spe...
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