As reported in Table 5 , there were no significant main effects of Structure or QP, but the Structure × Response interaction was highly significant (Estimate = −2.34, SE = 0.203, t = −11.53, p < 0.001), reflecting a crossover pattern between Island and Nonisland structures depending on answer type.
In contrast, during the 550–700 ms interval, a marginally significant effect of Structure emerged at the right anterior sites [ F (1, 23) = 3.82, p = 0.06], reflecting a trend toward greater negativity for the Island condition relative to the Nonisland condition. 3.6.2.2 Results of ERPs at the QP region Figure 5 presents the grand-average waveforms for the four experimental conditions defined by the interaction of Structure (Nonisland vs.