Studies have identified concurrent, longitudinal, and bidirectional associations between language difficulties and internalizing problems. This is commonly explained by social exclusion or withdrawal from peers, but underlying mechanisms are not well understood. This study uses sibling data to investigate if the comorbidity between language…

Children's number sense in kindergarten was used to predict their calculation fluency in second grade (N = 198). Using block entry regression, usual predictors of age, reading, memory, and verbal and spatial cognition were entered in the first block and number sense measures were added in the second block. Number sense measures contributed a…

This study investigated early clinical differences between 27 children (ages 0-4) with pervasive developmental disorder not otherwise specified and 27 children with attention deficit disorder. Results revealed almost no differences between both groups with respect to pregnancy or birth complications and suggest that differences become more…

This study examined early childhood characteristics of 82 11-year- old boys with either reading disabilities (RD) only, attention-deficit/hyperactivity disorder (ADHD) only, or both conditions. At ages 3 and 5 the RD only boys had performed poorly on measures of receptive and expressive language, whereas the RD/ADHD groups performed poorly on…