2.4.3. Social Responsiveness Scale (SRS)
autism mannerisms, deficit in social interaction, SRS
This scale is a respondent-based outcome measure used to assess deficits and symptoms related to ASD. The scale comes in two forms differentiated by gender and age. The scale can be administered by parents/caregivers and consists of subscales that assess (I) social awareness; (II) social cognition; (III) social communication; (IV) social motivation; (V) autism mannerisms. The raw subtotal of each domain is converted to a standardized score (T-score) and summed to calculate a total SRS score. All T-scores have a mean of 50 points and a standard deviation of 10 points. Clinical severity of ASD as determined by SRS total t-score is as follows: (I) less than or equal to 59 represents low-to-no symptom impact (normal); (II) between 60–65 represents mild-to-moderate deficits in social interaction; (III) between 66–75 represents moderate deficit in social interaction; (IV) greater than or equal to 76 represents severe (strongly associated with a clinical diagnosis of ASD). Repeated SRS assessments are compared and monitored to track progress toward achieving treatment plan goals.