It was hypothesized that some of the young children who were referred because of suspected ASD would only have mild symptoms of restricted and repetitive behavior at first observation and therefore did not meet the DSM-5 criteria but at reevaluation this kind of behavior would be severe enough to meet the criteria.
Tilgáta rannsóknarinnar var að börn sem koma ung til athugunar vegna gruns um röskun á einhverfurófi hafi ekki öll nægilega skýr einkenni sérkennilegrar og áráttukenndrar hegðunar til að uppfylla greiningarviðmið DSM-5 þótt slík hegðunareinkenni komi skýrt fram við endurmat.