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The child is engaging in "Self-stimulatory behavior".
Self-stimulatory
behavior alludes to redundant body actions or repeated movement of articles.
This conduct is usually seen in numerous people with developmental inabilities;
in any case, it seems, most commonly, to be more typical in autism. Actually,
if a man with another developmental handicap shows a type of self-stimulatory
conduct, frequently the individual is likewise marked as having autistic attributes.
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