A disorder characterized by an impairment in the development of an individual's expressive and receptive language capabilities which is in contrast to his/her nonverbal intellect. the impairment may be acquired (i.e., due to a brain lesion or head trauma) or developmental (i.e., no known neurological insult).

Mixed receptive-expressive language disorder (DSM-IV 315.32) is a communication disorder in which both the receptive and expressive areas of communication may be affected in any degree, from mild to severe. Children with this disorder have difficulty understanding words and sentences...