Abstract
Intrasexual competition supports the acquisition of new mates and the maintenance of existing relationships. We investigated intrasexual competition in relation to Dark Triad traits (narcissism, Machiavellianism, and psychopathy) and intensity of Facebook use. Men (n = 61) and women (n = 164) completed measures assessing intrasexual competition (Buunk & Fisher, 2009), Dark Triad traits (Jones & Paulhus, 2014), and intensity of Facebook use (Ellison, Steinfield, & Lampe, 2007). Machiavellianism and psychopathy were positive predictors for endorsement of intrasexual competition. Narcissism and Facebook intensity did not predict intrasexual competition. Findings are discussed in relation to personality and mate competition.
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