Chaos in the home and socioeconomic status is associated with cognitive development in early childhood: Environmental mediators identified in a genetic design

Studies done to test whether socioeconomic status (SES) and chaos in the home mediate the shared environmental variance associated with cognitive functioning at the same time estimating genetic influences in a twin design is reported. Findings illustrate that SES and chaos partially mediate the shared environmental effects on verbal and nonverbal cognitive ability for young children, even after controlling for genetic differences in cognitive ability.