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Title:  Observations of Mother-Twin Interactions at 9 Months: User's Manual for the Early Childhood Longitudinal Study, Birth Cohort (ECLS-B) 9-month Twin Triad Restricted-Use Data File
Description: This User's Manual for the Twin Triad Data File describes the design, instrumentation, coding methodology, and special issues pertaining to the twin triad data file from the Early Childhood Longitudinal Study, Birth Cohort base year (9-month) data collection. Also included is information to help users access and use the twin triad data file in conjunction with the main ECLS-B restricted-use data files.
Online Availability:
Cover Date: June 2007
Web Release: June 21, 2007
Print Release:
Publication #: NCES 2007047
Restricted Data Licenses
Center/Program: NCES
Authors: Nikki Aikens (MPR), Nana Kwakye (PTS), Amy Rathbun (AIR), Jennifer Park (NCES), and Jodi Jacobson Chernoff (AIR)
Type of Product: User's Manual/Data File Documentation
Survey/Program Areas: Early Childhood Longitudinal Study (ECLS)
Questions: For questions about the content of this User's Manual/Data File Documentation, please contact:
NCES WebMaster.
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