“…Researchers argue that testosterone (T)-a widely studied sex hormone-has evolutionary relevance for human survival and sexual reproduction, and this appears to be especially true for men. For instance, research implicates baseline T, as well as acute changes in T, as a modulating factor in: human dominance and status seeking behaviour; decisions to compete with, or aggress against, same-sex individuals; resiliency to status threats; and mating behaviour-all of which have important implications for attracting mates, and fending off rivals (Archer, 2006;Carré & McCormick, 2008;Carré, Putnam, & McCormick, 2009;Caswell, Bosson, Vandello, & Sellers, 2014;Ehrenkranz, Bliss, & Sheard, 1974;Josephs, Newman, Brown, & Beer, 2006;Schaal, Tremblay, Soussignan, & Susman, 1996;Sellers, Mehta, & Josephs, 2006;Slatcher, Mehta, & Josephs, 2011).…”