Master's theses

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Browsing Master's theses by Author "Bird, Brian M."

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    The effects of exogenous testosterone and mating context on men`s preferences for female facial femininity
    (2016-06-20) Bird, Brian M.
    Correlational research suggests that men show greater attraction to feminine female faces when their testosterone (T) levels are high. Men’s preferences for feminine faces also seem to vary as a function of relationship context (short versus long-term). However, the relationship between T and preferences for female facial femininity has yet to be tested experimentally. This thesis examined the causal role of T in modulating preferences for facial femininity across both short and long-term mating contexts, using two separate experiments. Results of Experiment 1 (within-subject design, n = 24) showed that participants significantly preferred feminized versus masculinized versions of women’s faces. Further, participants showed a stronger preference for feminine female faces in the short- versus the long-term context after they received T, but not after they received placebo. Post-hoc analyses suggest that this effect was driven by a lower preference for feminine faces in the long-term context when on T relative to placebo. Results from Experiment 2 (between-subject design, n = 93) were highly consistent with those of Experiment 1: men demonstrated a significant preference for feminized female faces in the short- versus the long-term context after T, but not after placebo administration, and this effect was driven by lower preferences for feminine faces in the long-term context when on T relative to placebo. Collectively, these findings provide the first causal evidence that T modulates men’s preferences for facial femininity as a function of mating context.