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Updated: Sep 20, 2025

Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers
Published on: March 14, 2018
Adaptation, Content Validity and Reliability of the Autism Classification System of Functioning for Social
Briano Di Rezze1, Stephen James Gentles2, Mary Jo Cooley Hidecker3
1CanChild Centre for Childhood Disability Research and School of Rehabilitation Science, Faculty of Health Sciences, Institute of Applied Health Sciences, McMaster University, 1400 Main Street West, Room 436, Hamilton, ON, L8S 1C7, Canada. direzzbm@mcmaster.ca.
Abstract:
The Autism Classification System of Functioning: Social Communication (ACSF) describes social communication functioning levels. First developed for preschoolers with ASD, this study tests an expanded age range (2-to-18 years). The ACFS rates the child's typical and best (i.e., capacity) performance. Qualitative methods tested parent and clinician perspectives of the ACSF age expansion using content analysis. The ACSF was used twice by parents and professionals for the same child/youth. Reliabilities were assessed using weighted kappa. Content validity supported the ACSF's applicability, clarity, and usability. The ACSF adaptations did not change its original construct. Reliability were calculated from 90 parent and professional Time-1 and Time-2 ratings for children/youth (2.1-15.6 years). Results showed good-to-very good intra-rater agreement (typical) and good inter-rater agreement (capacity).
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