Nonverbal Learning Disorder

A nonverbal learning disorder or nonverbal learning disability (NLD or NVLD) is a condition characterized by a significant discrepancy between higher verbal skills and lower motor, visuo-spatial, and social skills on an IQ test.

NLD involves deficits in perception, coordination, socialisation, non-verbal problem-solving and understanding of humour, along with well-developed rote memory.

Nonverbal learning disorder is a common co-existing disorder in people who have attention deficit hyperactivity disorder.

Ongoing debate surrounds the relationship between Asperger syndrome and NLD, as research on the condition is ongoing and procedures can differ from AS research. Although most people with Asperger syndrome (AS) fit the criteria for NLD, a diagnosis of AS is often preferred. In this instance, some researchers assert that an AS diagnosis is more clinically useful than an NLD diagnosis, and argue that NLD would be an example of excessive diagnostic splitting.

NLD can also occur with other disorders. As with Asperger syndrome, NLD exists on a spectrum, and those affected can experience it in a range of ways. Those with an NLD diagnosis can experience some or all of the symptoms, and to varying degrees.

Some proponents of the category believe that this discrepancy is attributable to dysfunction in the right cerebral hemisphere.