Asperger syndrome is a psychological disorder similar to high-functioning autism but different in the level of intelligence displayed (average to genius level, in some cases.) It is characterized by:

* limited interests or an unusual preoccupation with a particular subject to the exclusion of other activities

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repetitive routines or rituals / OCD-like behaviors
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peculiarities in speech and language, such as speaking in an overly formal manner or in a monotone, or taking figures of speech literally
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socially and emotionally inappropriate behavior and the inability to interact successfully with peers
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problems with non-verbal communication, including the restricted use of gestures, limited or inappropriate facial expressions, or a peculiar, stiff gaze
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clumsy and uncoordinated motor movements