“…Actions that are not consistent with age-based norms may be deemed as inappropriate, negatively impacting the well-being of individuals. Although nearly all individuals in the United States have initiated sexual activity by their mid-twenties and early thirties (Eisenberg, Shindel, Smith, Lue, & Walsh, 2009; Haydon et al, 2014), sexual initiation that occurs earlier or later relative to one's peers has been shown to be associated with adverse health outcomes (Haase et al, 2012), as well as various sexual risk factors (Sandfort, Orr, Hirsch, & Santelli, 2008). For example, those who transition early, particularly young girls, experience a greater risk for depression during adolescence (Spriggs & Halpern, 2008a).…”