Restricted accessResearch articleFirst published online 1994-12
Examining the Interaction of Age × Race Pertaining to Black-White Differences at Ages 15 to 93 on Six Horn Abilities Assessed by K-Fast,K-Snap,and Kait Subtests
This study examined differences between black and white subjects on 6 abilities from Horn's Gf-Gc theory for 5 age groups between 15–19 and 55–93 years (total ns = 956 white and 128 black subjects). White respondents scored significantly higher on all 6 abilities, but differences on fluid reasoning and short-term apprehension and retrieval were less than .5 SD. Interactions of age × race were nonsignificant, indicating that the discrepancies between scores of black and white subjects did not vary as a function of age.
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