. Author manuscript; available in PMC: 2010 Jul 14.

Published in final edited form as: Behav Genet. 2006 Sep 15;37(2):273–283. doi: 10.1007/s10519-006-9113-4

Table 2.

Correlations between NMSQT subtests by member of twin pair

Subtest	English	Math	Social	Natural	Vocabulary	Total
English	1.00	0.56	0.62	0.56	0.67	0.80
Math	0.53	1.00	0.65	0.67	0.58	0.84
Social	0.64	0.57	1.00	0.67	0.77	0.88
Natural	0.59	0.64	0.66	1.00	0.60	0.85
Vocabulary	0.67	0.54	0.77	0.60	1.00	0.84
Total	0.81	0.81	0.86	0.85	0.84	1.00

Note: Twin 1 correlations are below the diagonal; Twin 2 correlations are above the diagonal