@article{ref1,
title="Age of peers and early childhood development",
journal="Child development",
year="1993",
author="Bailey, D. B. Jr and Burchinal, M. R. and McWilliam, R. A.",
volume="64",
number="3",
pages="848-862",
abstract="We examined the developmental trajectories of 59 children between 21 and 67 months of age randomly assigned to same-age or mixed-age child care groups. Children were assessed at 6-month intervals with the Battelle Developmental Inventory. Using a hierarchical linear model for analysis, we computed individual and group growth curves for overall development and development within 5 domains: communication, cognitive, motor, adaptive, and personal-social. Group assignment affected the developmental trajectories for communication, cognitive, motor, and overall development, with mixed-age children showing a quadratic trajectory and same-age children a linear trajectory. For adaptive and personal-social development, however, the trajectories were similar. Across all domains, the mixed-age children tended to score higher than the same-age children at the younger ages, but these average differences decreased over time and had disappeared by age 5 years.<p /><p>Language: en</p>",
language="en",
issn="0009-3920",
doi="",
url="http://dx.doi.org/"
}