Joint (Mis-)Representations: A Reply to Welsh etal. (2013)

Considering the variety and scope of actions we perform together with others, it would seem unlikely that the entire range of joint actions can be exhaustively clarified by invoking a single mechanism. Guagnano et al. (2010) extended the field of joint actions by reporting a joint Simon effect with people carrying out separate assignments in adjacent locations, rather than with confederates collaborating to an assignment. In addition, they proposed that the space where two people act (peripersonal vs. extrapersonal) does matter in such a context. Here we comment on the inaccuracies in the theoretical, factual and methodological representation that Welsh et al. (2013) provide of Guagnano et al. (2010).