Information about the children whose speech formed the basis of the objective AoA data.
收藏NIAID Data Ecosystem2026-03-06 收录
数据链接：
官方服务：
资源简介：
Note: Before K. – preschoolers before entering kindergarten; K1 – kindergarten level 1; K2 – kindergarten level 2; K3 – kindergarten level 3; G1 – elementary school grade 1; G2 – elementary school grade 2; G3 – elementary school grade 3.
创建时间：
2011-01-26
