Description
Data are a subset from an observational, longitudinal, study on
adopted children. Is child's intelligence related to intelligence of
the biological mother and the intelligence of the adoptive mother?source
Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A
Course in Methods of Data Analysis (3rd ed), Cengage Learning.References
Skodak, M. and Skeels, H.M. (1949). A Final Follow-up Study of One
Hundred Adopted Children, Journal of Genetic Psychology
75: 85--125.