Table 9.

Correlation between demographic variables, education, verbal ability, total score on the 38-item test, and theta scores from Model D.

	Sex	Age	Education	Parents’ Education	Math Courses	Word Sum	Total Test Score
Age	0.07
Education	0.09	0.11 **
Parents’ Education	−0.03	0.02	0.36 **
Math Courses	−0.01	0.01	0.17 **	0.20 **
Word Sum	−0.02	0.02	0.09 *	0.17 **	0.28 **
Total Test Score	−0.09	−0.07	0.07	0.16 **	0.24 **	0.39 **
Theta	−0.09*	−0.08	0.07	0.16 **	0.25 **	0.39 **	0.96 **

Note: * p < 0.05, ** p < 0.01.