Apparatus
Participants were positioned 50 cm in front of the computer monitor. Participants entered responses on a computer keyboard placed on a table directly in front of them. The experiment used four keys on the keyboard. Participants used the F key with a leftward-pointing arrow taped over the top to indicate left responses, the H key with a rightward-pointing arrow taped over the top to indicate right responses, and the G key with a blue circle taped over the top to indicate direct responses. Participants pressed the spacebar to begin each trial.