Journal of Applied Developmental Psychology · 1995 · 17 citations · 33 references
EducationEarly Childhood EducationEducational PsychologyChild DevelopmentEarly InterventionEarly ChildhoodSocial-emotional InterventionBehavioral Early InterventionPre-kindergarten Program Evaluation
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Sample Selection Bias as a Specification Error
James J. Heckman · Econometrica · 1979 · 28.9K citations
The Perceived Competence Scale for Children
Susan Harter · Child Development · 1982 · 3.6K citations