Table 1.

Descriptive statistics and mean level differences.

Scales	Girls		Boys		t-value	Effect size d
	M	SD	M	SD
Anxiety-Trait	1.87	0.90	1.72	0.84	−2.32*	−0.12
Anxiety-State	1.65	0.84	1.64	0.81	−0.32	−0.01
Self-concept	2.86	1.18	3.26	1.15	5.19***	0.24
Stereotype Endorsement	1.76	1.14	2.12	1.24	4.39***	0.21

Positive t-values reflect higher scores for boys. For multi-item measures, scale values were divided by the number of items. n = 416 girls, n = 339 boys.

^*p < 0.05,

^***p < 0.001.