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Asperger Syndrome Diagnostic Scale (ASDS)

The Asperger Syndrome Diagnostic Scale (ASDS; Myles, Bock, & Simpson, 2001) is a norm- referenced measure consisting of 50 yes/no items.


The ASDS yields scores in five areas: cognitive, maladaptive, language, social, and sensorimotor, as well as a total score represented by the Asperger Syndrome Quotient (ASQ). The five subtests provide information comparing the behaviors of the individual to the behaviors of individuals diagnosed with Asperger Syndrome (AS). The ASQ indicates the probability of Asperger Syndrome. Any individual who knows the child or adolescent well may complete the ASDS.


Author (yr) Age Range (yrs) Method of Administration/Format Approx. Time to Administer Subscales
**Asperger Syndrome Diagnostic Scale (ASDS) Myles, Bock, & Simpson (2001) 5-18

Parent/teacher/caregiver questionnaire: 50 items rated for presence or absence of behaviors related to Asperger Syndrome Yields standard scores and percentiles for the five subscales. Raw scores from the subscales are added to create the Asperger Syndrome Quotient (ASQ), which is a standard score. The ASQ indicates the probability of the diagnosis of AS based on scores of a normative sample of individuals diagnosed with AS.

10-15 min.

Cognitive; Maladaptive; Language; Social; Sensorimotor

Screening/Diagnosis: D

** Instrument includes information related to developmental history.

Availability: Pearson,


Author (yr) Sample Size Topic(s) Addressed Outcome
Boggs, Gross, & Gohm (2006) 76 - Age Range: 5-17 years Divergent and convergent validity; Discriminative validity

r = correlation

Weak correlation between ASQ and AS (r = 0.23); AU group r = 0.65, Intellectually Gifted r = 0.49, No Ruling group r = 0.51;

Prediction accuracy rate: 93.2% for AS and Non-AS, 72.7% for AS and AU, 87.9% for AS and AU when all three measures were used;

ASQ and SSRS scores significantly highly inversely related


ASQ is able to discriminate between clinical and non- clinical groups: t-test = -17.41

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