Fein and Chang (2006) presented results of between-group ANOVAs of P3b and P3a amplitudes and latencies on this same data. The multi-electrode analysis of the current study confirms the Pz as the primary electrode site for P3b group discrimination, similar to the findings of Rangaswamy et al. (2007). However, the Jones et al (2006) finding of the largest group effect for the P3b amplitude being over the frontal region rather than parietal region, differs from that of both the current study and the literature consensus.
