Problem: All of the following have been reported about early language abilities except a) older siblings' language skills are more predictive than infants' own abilities b) preschool teachers' reports are less accurate than parents' reports c) the CDI is a valid tool for assessing both typically developing (and atypically developing) children, specifically children with Down syndrome or other impairments d) infants' ability to discriminate native-language sounds at 7 months predicts their language ability at later ages. Need Assignment Help?