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ERIC Number: EJ116431
Record Type: Journal
Publication Date: 1975
Pages: N/A
Abstractor: N/A
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Twins: Concordance for Piagetian-Equivalent Items Derived from the Bayley Mental Test
Matheny, Adam P., Jr.
Developmental Psychology, 11, 2, 224-227, Mar 75
Analyzed 20 test items for evidence of concordance for samples that included at least 120 pairs of identical twins and 85 pairs of same-sex fraternal twins at ages 3, 6, 9 and 12 months. Also computed within-pair correlations for the total number of Piagetian-equivalent items passed. (Author/SDH)
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