“…This led early theoretical accounts to view socially acquired fear as a weaker form of learning that constitutes a secondary pathway through which fears could be acquired (Rachmen, 1977). However, compelling evidence now indicates that fears acquired through observation are similar in strength to those acquired directly (Hygge & Dimberg, 1983;Olsson & Phelps, 2004) and may underlie the acquisition of persistent fears, such as phobias (Aktar, Majdandzic, De Vente, & Bogels, 2013;Merckelbach, Arntz, & de Jong, 1991;Ost, 1991). A proposed reason for this is that observational fear learning operates through a similar associative mechanism to that of Pavlovian fear learning (Mineka & Cook, 1993;Olsson & Phelps, 2004).…”