. Author manuscript; available in PMC: 2017 Apr 1.

Published in final edited form as: Infancy. 2015 Oct 30;21(3):262–287. doi: 10.1111/infa.12119

Table 1.

Mean inter-subject correlations within and between each age group. Correlations along the diagonal (in bold) are within-age correlations (ISC_w). Correlations between each age group and comparison adults (bottom row) were used to calculate the ISC_a measure. All correlations were significant at the .05 level using time-randomized baseline tests.

	6 months	9 months	12 months	24 months	Adults	Comparison Adults
6 months	.381
9 months	.380	.396
12 months	.400	.326	.520
24 months	.328	.357	.455	.527
Adults	.318	.332	.486	.495	.598
Comparison Adults	.374	.318	.517	.487	.597	.600