NotesFAQContact Us
Collection
Advanced
Search Tips
50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

Back to results
Peer reviewed Peer reviewed
ERIC Number: EJ550061
Record Type: CIJE
Publication Date: 1997
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0022-0663
Same-Age Unrelated Siblings: A Unique Test of Within-Family Environmental Influences on IQ Similarity.
Segal, Nancy L.
Journal of Educational Psychology, v89 n2 p381-90 Jun 1997
Pairs of genetically unrelated children reared as same-age siblings offer a design for investigating genetic and environmental influences on behavior. Results with 21 pairs support an explanatory model of intelligence that includes genetic factors. Shared environment appeared to have a very small effect on intellectual development. (SLD)
Descriptors: Adopted Children, Child Development, Family Influence, Genetics, Intelligence, Intelligence Quotient, Nature Nurture Controversy, Sibling Relationship, Siblings
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: N/A
Note: Research supported in part by a Summer Stipend for Research, Scholarship, and Creative Activity from California State University, Fullerton.