| Abstract: | Measured both parental and child IQs with the Raven Standard Progressive Matrices and the Peabody Picture Vocabulary Test; Ss included 80 mothers, 35 fathers, and 80 children (mean age 12 yrs). Home intellectual environment was assessed through a 2-hr interview with the mother. Multiple regression analyses showed that for each IQ test and for the 2 scores combined, the addition of home environment ratings to the regression equations did not add a significant increment to the prediction of child IQ from that provided by maternal IQ, whereas the addition of maternal IQ to the regression equation did add a significant increment to that provided by home environment ratings. Thus, the correlation of home environment and child IQ is considerably overestimated when maternal IQ is allowed to covary. When maternal IQ was statistically controlled, the correlation between home environment ratings and child IQ was attenuated to nonsignificance. (13 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
