TABLE 2.

Behavioral performance on the same–different task in experiment 2

	Concave		Convex
	Fixation on Figure	Fixation on Ground	Fixation on Figure	Fixation on Ground
A. Reaction time (RT), ms
RT	993	1,010	898	899
SE	127	132	109	109
B. d′
d′	3.71	3.78	3.77	3.83
SE	0.28	0.23	0.32	0.27

Values are means and SE of reaction time (A) and d′ (B).