Table 1. Summary of the validity of emotional stimuli.

Infant	Male						Female
	Neutral face		Sad face		Happy face		Neutral face		Sad face		Happy face
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Happiness	1.18	0.50	1.00	0.00	6.18***	1.10	1.50	1.06	1.00	0.00	6.27***	0.88
Sadness	1.64	0.85	6.18***	0.96	1.05	0.21	2.18	1.26	5.23	1.90	1.05	0.21
Disgust	1.86	1.13	4.91	1.90	1.00	0.00	2.23	1.19	4.95	1.76	1.00	0.00
Anger	1.50	1.01	2.91	2.11	1.00	0.00	1.55	0.86	2.95	1.89	1.00	0.00
Adult	Male						Female
	Neutral face		Sad face		Happy face		Neutral face		Sad face		Happy face
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Happiness	1.14	0.47	1.36	0.73	5.77***	1.23	1.64	0.85	1.09	0.43	5.86***	1.04
Sadness	1.32	0.89	4.68***	1.29	1.14	0.64	1.50	0.74	5.27***	1.52	1.00	0.00
Disgust	1.73	0.94	2.82	1.56	1.05	0.21	1.55	0.74	3.50	1.68	1.09	0.43
Anger	1.59	0.85	1.45	0.67	1.00	0.00	1.41	0.73	2.23	1.19	1.00	0.00

*** p < .001