Fig. 4.
a OVST errors made when searching within confusable letter arrays for trained targets, including letter confusion, reversal, motor and other errors (time 1 presented on the left and time 2 on the right side). b OVST errors made when searching within nonconfusable letter arrays for trained targets (upper panel) and untrained targets (lower panel; time 1 presented on the left and time 2 on the right side)