Table 2.

Demographic characteristics of students participated in the construct validity study

	PCA sample (n=349) n (%)	CFA sample (n=338) n (%)	Total (n=697) n (%)
Gender
Male	154 (44.1)	184 (52.9)	338 (48.5)
Female	195 (55.9)	164 (47.1)	359 (51.5)
City districts
High SES (districts 2,4,5)	198 (56.7)	166 (47.7)	364 (52.2)
Middle SES (districts 9, 11, 14)	60 (17.2)	112 (32.2)	172 (24.7)
Low SES (districts 15, 16, 17)	91 (26.1)	70 (20.1)	161 (23.1)
Study major
Biological Sciences	124 (35.5)	121 (34.8)	245 (35.2)
Mathematics	135 (38.7)	151 (43.4)	286 (41)
Literature and Humanities	90 (25.8)	76 (21.8)	166 (23.8)

SES: Socio-economic status