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 |
|---|---|
| Pages (from-to) | 392-401 |
| Number of pages | 10 |
| Journal | Japanese Journal of Educational Psychology |
| Volume | 52 |
| Issue number | 4 |
| Publication status | Published - 2004 Dec |
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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
- Psychology(all)
- Developmental and Educational Psychology
Cite this
Toyoda, H., Nakamura, K., & Muraishi, Y. (2004). Behavior genetic analysis of longitudinal intelligence test data on twins. Japanese Journal of Educational Psychology, 52(4), 392-401.