نتایج جستجو برای: sexual preference
تعداد نتایج: 180139 فیلتر نتایج به سال:
Many aspects of social behavior are controlled by sex-specific pheromones. Gender-appropriate production of the sexually dimorphic transcription factors doublesex and fruitless controls sexual differentiation and sexual behavior. miR-124 mutant males exhibited increased male-male courtship and reduced reproductive success with females. Females showed a strong preference for wild-type males over...
This is the first of two papers which briefly outline the development of behavioral and cognitive behavioral treatment of sexual offenders from the mid-1800s to 1969. We first consider the historic role of Sigmund Freud and note that a broad scientific interest in deviant sexual behaviour was well established by 1900. In the early to mid-20th century, two psychologies were prominent in the deve...
Research has demonstrated that the sexual role preferences of gay men can be perceived with accuracies that exceed chance guessing from viewing photos of their faces. This research was conducted with only heterosexual perceivers making the categorizations. We therefore examined whether men who have sex with men (N = 121) were able to perceive sexual role preferences from faces and, critically, ...
The precise effects of HIV-1 on the gut microbiome are unclear. Initial cross-sectional studies provided contradictory associations between microbial richness and HIV serostatus and suggested shifts from Bacteroides to Prevotella predominance following HIV-1 infection, which have not been found in animal models or in studies matched for HIV-1 transmission groups. In two independent cohorts of H...
Volume 24, Number 2, June 1998 result of a curse or bad luck.7 In Senegal, drying agents may be used where there is a community belief that the vagina is not simply a natural part of the body, but must bear the mark of artistic “work.”8 Both men and women have expressed preference for vaginal dryness and tightness during intercourse. In Zaire,9 as well as in Zimbabwe,10 it is reported to increa...
Mate choice and sexual displays are widespread in nature, but their evolutionary benefits remain controversial. Theory predicts these traits can be favored by runaway sexual selection, in which preference and display reinforce one another due to genetic correlation; or by good genes benefits, in which mate choice is advantageous because extreme displays indicate a well-adapted genotype. However...
Predation is generally thought to constrain sexual selection by female choice and limit the evolution of conspicuous sexual signals. Under high predation risk, females usually become less choosy, because they reduce their exposure to their predators by reducing the extent of their mate searching. However, predation need not weaken sexual selection if, under high predation risk, females exhibit ...
This study evaluated a method of preventing sexual preference faking in phallometric assessments employing audiotaped stimuli. The stimuli were stories describing neutral heterosocial interactions, consenting heterosexual activity, rape, and nonsexual violence. Sixteen normal heterosexual males were each tested with ordinary instructions, with fake instructions (i.e., to appear sexually interes...
Methamphetamine (Meth) users report having heightened sexual pleasure, numerous sexual partners, and engaging in unprotected sex due to loss of inhibitory control. This compulsive sexual behavior contributes to increased prevalence of sexually transmitted infections, but the neural basis for this is unknown. We previously established a paradigm for compulsive sexual behavior in male rats in whi...
a r t i c l e i n f o Facial masculinity in men is thought to be an indicator of good health. Consistent with this idea, previous research has found a positive association between pathogen avoidance (disgust sensitivity) and preference for facial masculinity. However, previous studies are mostly based on young adult participants and targets, using forced-choice preference measures; this begs th...
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