Implications of the restricted range of family environments for estimates of heritability and nonshared environment in behavior-genetic adoption studies

Datos Bibliográficos

ID4418641
AutoresMike Stoolmiller (Oregon Social Learning Center, autor de correspondencia)
Año1999
Volumen125
Número4
Páginas392-409
Fecha de publicación1999-01-01
Peer ReviewedSí
Open AccessNo
TipoARTICLE
RevistaPsychological Bulletin (JOURNAL)
Identificadores de la revistaISSN: 0033-2909 • E-ISSN: 1939-1455
EditorialAmerican Psychological Association (APA) (PUBLISHER)
DOI10.1037//0033-2909.125.4.392
PMID10414224
OpenAlexW4247654126
IdiomaEN
Citas recibidas61
Referencias citadas37

Group and individual-difference adoption designs lead to opposite conclusions concerning the importance of shared environment (SE) for the child outcomes of IQ and antisocial behavior. This paradox could be due to the range restriction (RR) of family environments (FE) that goes with adoption studies. Measures of FE from 2 of the most recent adoption studies indicate that RR is substantial, about 67%, which corresponds to the top half of a normal FE distribution. RR of 67% cuts effect sizes and R2 statistics by factors of 3 and 2-2.5, respectively. Because selection into an adoption study in inherently a between-family process and assuming that comparable restriction of genetic (G) influences are absent, estimates of SE, G, and nonshared influences will be substantially biased, respectively, down, up, and up by RR. Corrections for RR applied to adoption studies indicate that SE could account for as much as 50% of the variance in IQ

Behavioural genetics · Biology · Developmental psychology · Econometrics · Economics · Evolutionary biology · Heritability · Range (aeronautics) · Selection (genetic algorithm) · Statistics · Variance (accounting) · Child and Adolescent Psychosocial and Emotional Development · Cognitive Abilities and Testing · Computer Science · Cultural Differences and Values · Demography · Diverse Educational Innovations Studies · Genetics · Mathematics · Psychology · Social Psychology