Motor performance and handedness in children with developmental language disorder.

Developmental language disorder (DLD) is diagnosed when there is a failure of normal language development in a child with normal nonverbal intelligence. The discussion about additional or causal deficits is controversial. In this study a computer-based motor performance series with a tapping, aiming and pegboard movement task and an additional paper-pencil handedness test were applied to a group of children with DLD of the phonologic-syntactic subtype and with normal nonverbal intelligence to describe the additional motor problems. Furthermore we examined whether our DLD children showed a different handedness. Tapping and pegboard with both hands were significantly impaired in our DLD children. Overall our DLD children did not show a different handedness than the control group.