According to The Gillberg diagnostic criteria for Asperser’s Syndrome (Gillberg 1991) a diagnosis includes the following:

1) Social Impairment (Extreme Egocentricity), at least two of the following
    A) Difficulties interacting with peers
    B) Indifference to peer contacts
    C) Difficulties interpreting social cues
    D) Socially and emotionally inappropriate behavior
2) Narrow Interest, at least one of the following
    A) Exclusion of other activities
    B) Repetitive adherence
    C) More rote than meaning
3) Compulsive Need for Introducing Routines and Interests
    A) Which affects the individual’s every aspect of every day life
    B) Which affect others
4) Speech & Language Peculiarities, at least three of the following
    A) Delayed Speech Development
    B) Superficially perfect Expressive Language
    C) Formal pedantic language
    D) Odd prosody, peculiar voice characteristics
    E) Impaired of comprehension including misinterpretations of literal/implied meanings

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