Abstract
Participants (115 monozygotic pairs of twins, 32 dizygotic pairs, and 881 non-twin students) took the Tanaka B Intelligence Test (New Edition) when in junior high school and high school. The data were analyzed by a type of structural equation model, a genetic ACE (Additive genetic, Common environment, non-shared Environment) model, combined with a model for analyzing longitudinal data. Intelligence scores (IS) and scores on 7 sub-tests were examined. Non-shared environment accounted for a considerable portion of the variance in each score, at both the junior high and high school levels.
Original language | English |
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Pages (from-to) | 392-401 |
Number of pages | 10 |
Journal | Japanese Journal of Educational Psychology |
Volume | 52 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2004 Dec |
Keywords
- Behavior genetic analysis
- Comparison of twins and non-twins
- Intelligence test
- Junior high school and high school students
- Structural equation model
ASJC Scopus subject areas
- Education
- Developmental and Educational Psychology