“…This pattern of response initiation times (reaction times or RTs) has come to be known as the social inhibition of return effect (social IOR) because the task and pattern of RTs mimic the inhibition of return phenomenon observed in paradigms in which individuals perform alone (see Klein, 2000, for review). A large number of experiments have now been published that have employed this joint action paradigm, all of which have helped to determine the effect's various characteristics and parameters (e.g., Atkinson, Skarratt, Simpson, & Cole, 2014;Cole, Skarratt, & Billing, 2012;Cole, Wright, Doneva, & Skarratt, 2015;Cole, Atkinson, D'Souza, Welsh, & Skarratt, 2018;Doneva & Cole, 2014;Hayes, Hansen, & Elliott, 2010;Janczyk, Welsh, & Dolk, 2016;Lyons, Weeks, & Elliott, 2013;Ondobaka, de Lange, Newman-Norlund, Wiemers, & Bekkering, 2012;Skarratt, Cole, & Kingstone, 2010;Welsh et al, 2005;Welsh et al, 2007;Welsh, Manzone, & McDougall, 2014;Welsh, McDougall, & Weeks, 2009a;Welsh, Ray, Weeks, Dewey, & Elliott, 2009b). In the present article, we review the literature with a view to identifying why so-called Bsocial IOR^occurs.…”