If the sgACC computes prediction errors in social contexts what function distinguishes it from the pgACC? The most pertinent difference between sgACC and pgACC might be their frame of reference. Initial evidence suggests that whilst the sgACC might track information relevant to an other-centred frame of reference, the pgACC might compute information in a self-centred frame (Ruff and Fehr, 2014). In early investigations, for example, Kelley and colleagues found pgACC to be selectively active when judging whether adjectives describe oneself or not (Kelley et al., 2002). This was not the case when making attribute judgements related to other people.
