Aikens, Nikki; Kwakye, Nana; Rathbun, Amy; Park, Jennifer; … - Mathematica Policy Research - 2007
This CD-ROM contains restricted-use base year (9-month data collection) twin triad data from the Early Childhood Longitudinal Study, Birth Cohort (ECLS-B). The twin triad data file contains data from a subsample of twins videotaped with their mothers during a teaching interaction. Triadic...