<unk>  (DSM-IV 315.32) is a communication disorder in which both the<unk>  and<unk>  areas of communication may be affected in any degree, from mild to severe. Children with this disorder have difficulty understanding words and sentences. This impairment is classified by deficiencies in<unk>  and<unk>  language development that is not attributed to sensory deficits, nonverbal intellectual deficits, a neurological condition, environmental deprivation or psychiatric impairments. Research illustrates that 2% to 4% of five year olds have<unk> . This distinction is made when children have issues in<unk>  language skills, the production of language, and when children also have issues in<unk>  language skills, the understanding of language. Those with<unk><unk> -language disorder have a normal left-right anatomical asymmetry of the planum temporale and parietale. This is attributed to a reduced left hemisphere functional specialization for language. Taken from a measure of cerebral blood flow (SPECT) in phonemic discrimination tasks, children with<unk>  do not exhibit the expected predominant left hemisphere activation.<unk>  is also known as<unk><unk>  language impairment (RELI) or<unk>  language disorder.
Mixed receptive-expressive language disorder
Specific language impairment
Nonverbal learning disorder
Expressive language disorder
Nonverbal autism
Global developmental delay
Developmental language disorder
Language delay