. Author manuscript; available in PMC: 2014 Sep 1.

Published in final edited form as: Psychol Sci. 2013 Jul 1;24(9):1704–1713. doi: 10.1177/0956797613478618

Table 1. Characteristics of Participants Across Studies Included in the Meta-Analysis.

Variable	M	SD	Range
Age at baseline (years)	4.22	2.86	0.50–12.00
Time interval between measurements (years)	4.31	3.38	0.33–15.00
Age at follow-up (years)	8.52	4.33	1.00–18.10
Female (%)	50.10	3.27	47–58
Non-White (%)	8.45	1.68	0–39

Note: Characteristics are weighted per sample rather than by individual participants.