In the Original Investigation titled “Association of Child Poverty, Brain Development, and Academic Achievement” published online July 20, 2015, in JAMA Pediatrics,1 the reported “indirect/total affect” ratio in Table 3 in the case of the WJ-III math computation and the amygdala should be 0.08 rather than 0.02. Also, in the case of the WJ-III math computation, the sample size should be 787 rather than 87. This article was corrected online.