Stoolmiller on restriction of range in adoption studies: a comment.
Stoolmiller has recently presented a model featuring an inferred dimension of family quality which, he suggests, is severely truncated in adoption studies such as the Texas Adoption Project, resulting in gross underestimation of the effects of shared family environment. We discuss some potential limitations of his approach in general and as he applies it to the Texas adoption data on IQ.
Loehlin
J C
JC
Psychology Department, University of Texas, Austin 78712, USA. loehlin@psy.utexas.edu
Horn
J M
JM
D000300:Adoption; D002648:Child; D006801:Humans; D007206:Individuality; D007360:Intelligence / Q000235:genetics*; D008957:Models, Genetic; D012931:Social Environment