Sex differences in short-term mating behaviors are well-documented in human sexuality research. Existing studies usually explain sex differences in sexual behaviors through differences in mating preferences, which is theoretically problematic. Using an agent-based model, we investigated the circumstances under which males' and females' differential preferences for short-term mating would result in sex differences in short-term mating behaviors. The model showed that when all individuals in a closed heterosexual population were considered, males and females had the same average number of short-term mating experiences and short-term mates even when males had stronger preferences for short-term mating. Males (vs. females) had a higher average number of both experiences and mates when analyses were limited to only heterosexual males and females who successfully participated in the mating pool (i.e., those with a non-zero number of short-term mating experiences). Moreover, when males (vs. females) had stronger preferences for short-term mating, gay males had a higher average number of experiences and mates compared to both lesbian females and heterosexual males. These results suggest that even when sex differences in mating preferences exist, the sex differences in shortterm mating behaviors only occur among particular populations, or when males' preferences for short-term mating are not constrained by those of females. Suggestions for future research in human mating psychology and behaviors were provided.
Parental acceptance is a robust protective factor for lesbian, gay, or bisexual (LGB) individuals' mental health, yet its predictors have not been frequently studied in China. The present study examined predictors of Chinese heterosexual adults' attitudes toward potentially having an LGB child. Participants were 700 Chinese nationals (37.6% women and 62.4% men) aged 18–64 who identified as exclusively heterosexual and did not have an LGB child. We found that beliefs about the changeability of sexual orientation and beliefs in negative outcomes of being LGB predicted negative attitudes toward having an LGB child in domains of emotion, cognition, and behavior. Moreover, more exposure to LGB individuals predicted reduced disapproval and negative actions as well as increased positive actions. These findings revealed the key factors to changing Chinese people's attitudes toward having an LGB child. Clinical implications for therapists and counselors working with Chinese LGB individuals and their parents are discussed.
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