"Sam is a seven-year-old boy who was identified at the age of two as having an autism spectrum disorder. He has good verbal language, has difficulty understanding non-verbal body language, and is obsessed with airplanes. He knows the name and specifics of every type of aircraft. According to the textbook, which specific type of disorder does Sam have?"

Asperger syndrome

Explanation:

Asperger syndrome is in the same category as autism and is a neurodevelopmental disorder. The symptoms such as verbal and motor skills are usually less severe when compared to those presented with autism.

This is why Sam is able to have a good verbal language, has difficulty understanding non-verbal body language ,obsessed with airplanes and has the knowledge of the name and specifics of every type of aircraft.

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