A 1992 follow-up of the Minnesota Transracial Adoption Study found no significant differences between transracial adoptees and the adoptive parents' biological offspring in the change in IQ scores from childhood (Time 1) to adolescence (Time 2).
January 01, 1992
high
temporal
Longitudinal comparison of IQ change between transracial adoptees and biological offspring approximately ten years after initial testing.
A 1976 Minnesota Transracial Adoption Study reported that the average IQ of black and interracial children adopted within the first 12 months of life was 110, exceeding the regional white population mean of 100.
January 01, 1976
high
temporal
Initial findings from the Minnesota Transracial Adoption Study on adopted children's IQs.
The 1976 Minnesota Transracial Adoption Study found that adopted children scored, on average, lower on IQ tests than the adoptive parents' biological (birth) children, a pattern observed among black/interracial, white, and Asian/Indian adoptees.
January 01, 1976
high
temporal
Comparative IQ performance between adoptees and biological offspring in the 1976 study.