Brian Byrne|Sally J. Wadsworth|Kristi Boehme|Andrew Talk|William L. Coventry|Richard K. Olson|Stefan Samuelsson|Robin P. Corley
Multivariate Genetic Analysis of Learning and Early Reading Development
Linköping University|University of Colorado System|University of Colorado System|Linköping University|Linköping University|University of Colorado System
abstract genetic factor structure range learning measures explored twin children recruited preschool followed grade 2 n 2084 measures orthographic learning word reading included analyses determine patterned learning processes exploratory factor analysis genetic correlations among variables indicated threefactor model vocabulary tests loaded first factor grade 2 measures word reading orthographic learning plus preschool letter knowledge loaded second third characterized tests verbal shortterm memory three genetic factors correlated second print factor showing specificity conclude genetically influenced learning processes underlying printspeech integration foreshadowed preschool letter knowledge degree independence genetic factors affecting spoken language also argue psychology genetics associative learning afforded central place studies reading disability suggest links molecular studies genetics learning acknowledgments funding provided australian research council dp0663498 dp0770805 national institute child health human development hd27802 hd38526 swedish research council 34520023701 pdokj02820061 riksbankens jubileumsfond knut alice wallenberg foundation pdokj02820061 thank australian twin registry testers twins parents involved