Previous studies have demonstrated that various psychosocial risks are associated with poor cognitive functioning in children, and these risks frequently cluster together. In the current longitudinal study, we tested a model in which it was hypothesized that cumulative psychosocial adversity of mothers would have deleterious effects on children's…

Vocabulary knowledge is a critical component of school readiness. The current study investigated the extent to which low levels of joint attention in infancy and parent-child book reading across early childhood increase the risk of children having poor vocabulary around the time of school entry. Relevant data from the Longitudinal Study of…

This research addresses the challenges of assessing receptive language abilities in minimally verbal children with autism spectrum disorder by comparing several adapted measurement tools: a standardized direct assessment of receptive vocabulary (i.e. Peabody Picture Vocabulary Test-4); caregiver report measures including scores on the Vineland-II…

Discusses evidence that social understanding informs word learning in infants. Asks: (1) Is genuine social understanding necessary for word learning?; (2) Are social clues criterial for infants' learning?; (3) Can word learning proceed without aid of social understanding?; and (4) Is social clue processing too difficult for everyday word learning?…

The project evaluated the effectiveness of using Total Communication (simultaneous use of sign language and speech) with six infants with Down syndrome as a means of fostering communication while verbal skills and articulatory proficiency develop. Each child was seen within the home environment every second week through 24 months of age and once a…