MAX-D24 was not associated with target P3 either. Notably, this was not a consequence of twin pair selection, although the realized sample for target P3 was smaller than that for novel P3. Within-pair correlations across the 108 twin pairs common to both novel and target P3 yielded parallel results, with a significant and slightly higher correlation of MAX-D24 with novel P3, and with no change in its negligible correlation with target P3.