Participants in the study were tested in two waves. Participants in the first wave (N = 42) were tested using a 64-channel Neuroscan, Inc. Synamps amplifier, and those in the second wave (N = 125) were tested using a 64-channel Neuroscan Synamps2 amplifier. In each phase, EEG activity was recorded using 64-channel Quick-caps containing sintered Ag-AgCl electrodes positioned in accordance with the International 10–20 System (Jasper, 1958). Activity was recorded from a greater number of scalp sites in Wave 2, but only electrodes in common across the two waves were included in the analyses reported here. Additionally, problems with the FP1 and FP2 scalp sites in Wave 1 necessitated dropping these sites from both waves. Thus, 51 electrodes are included in the reported data, as follows: AF3, AF4, F7, F5, F3, F1, Fz, F2, F4, F6, F8, FT7, FC3, FC1, FCz, FC2, FC4, FT8, T7, C5, C3, C1, Cz, C2, C4, C6, T8, TP7, CP3, CP1, CPz, CP2, CP4, TP8, P7, P5, P3, P1, Pz, P2, P4, P6, P8, PO5, PO3, POz, PO4, PO6, O1, Oz, O2. Ocular activity was
