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Direct linkHall, Scott S.; Burns, David D.; Lightbody, Amy A.; Reiss, Allan L. – Journal of Abnormal Child Psychology, 2008
Structural equation modeling (SEM) was used to examine the development of intellectual functioning in 145 school-age pairs of siblings. Each pair included one child with Fragile X syndrome (FXS) and one unaffected sibling. All pairs of children were evaluated on the Wechsler Intelligence Scale for Children-Third Edition (WISC-III) at time 1 and 80…
Descriptors: Intellectual Development, Siblings, Structural Equation Models, Mental Retardation
van IJzendoorn, Marinus H.; Luijk, Maartje P. C. M.; Juffer, Femmie – Merrill-Palmer Quarterly: Journal of Developmental Psychology, 2008
In this meta-analysis of 75 studies on more than 3,888 children in 19 different countries, the intellectual development of children living in children's homes (orphanages) was compared with that of children living with their (foster) families. Children growing up in children's homes showed lower IQ's than did children growing up in a family…
Descriptors: Intelligence Quotient, Intellectual Development, Foster Care, Foreign Countries
