“…For instance, dispositional tendencies toward intrasexual competition Buunk & Fisher, 2009), personality traits like psychopathy, Machiavellianism, and narcissism (Bird et al, 2016;Jonason et al, 2020), and motivational biases of wanting power or affiliation (Carpinella & Johnson, 2013;Mannes, 2012;Sherlock et al, 2017) may also play important roles in the psychology surrounding beards. Sixth, our results focused on Polish men only but there may be a reason to examine intrasexual competition, and thus beardedness, across cultural contexts (Buunk, 2022). Moreover, human populations vary in facial hair growth (e.g., facial hair is a more characteristic feature for European and Central Asia populations than African populations and East-Asian populations; Pazhoohi & Kingstone, 2020), so our results may pertain more to some populations than other populations.…”