Table 3.

Correlations Among the General and Number Sense Measures

Measure	Reading	Vocabulary	Matrix Reasoning	Digit Span Forward	Digit Span Backward	Counting	Number Knowledge	Nonverbal Calculations	Story Problems	Number Combinations	Calculation Fluency
Reading	1	0.41	0.36	0.37	0.23	0.29	0.29	0.32	0.42	0.39	0.33
Vocabulary	0.41	1	0.32	0.44	0.28	0.28	0.38	0.35	0.46	0.44	0.35
Matrix reasoning	0.36	0.32	1	0.30	0.28	0.23	0.34	0.47	0.44	0.46	0.37
Digit span forward	0.37	0.44	0.30	1	0.31	0.24	0.27	0.31	0.41	0.34	0.29
Digit span backward	0.23	0.28	0.28	0.31	1	0.29	0.22	0.37	0.31	0.29	0.35
Counting	0.29	0.28	0.23	0.24	0.29	1	0.36	0.28	0.28	0.43	0.30
Number knowledge	0.29	0.38	0.34	0.27	0.22	0.36	1	0.43	0.46	0.49	0.45
Nonverbal calculations	0.32	0.35	0.47	0.31	0.37	0.28	0.43	1	0.61	0.61	0.51
Story problems	0.42	0.46	0.44	0.41	0.31	0.28	0.46	0.61	1	0.73	0.51
Number combinations	0.39	0.44	0.46	0.34	0.29	0.43	0.49	0.61	0.73	1	0.57
Calculation fluency	0.33	0.35	0.37	0.29	0.35	0.30	0.45	0.51	0.51	0.57	1

Note: All the correlations are significant, p < .01.