The Revised Children's Communication Checklist‐2 (<scp>CCC‐R</scp>): Factor Structure and Psychometric Evaluation

The Children's Communication Checklist-2 (CCC-2) is often applied to assess pragmatic language impairment which highly prevalent in autism spectrum disorder (ASD) and several mental health conditions. We replicated previous findings on the limited applicability of CCC-2 clinical samples inconsistent concerning factor structure. aim present study was, thus, develop a concise, simplified, revised version large German-speaking sample. Four groups children adolescents aged 4 17 years were included: ASD (n = 195), intellectual disability (ID, n 83), diverse conditions (MHC, 144) typically developing control group (TD, 417). reduced original number items from 70 39, based item analysis, exploratory analysis exclusion communication-unrelated items. version, CCC-R (α 0.96), consists two empirically derived factors: pragmatic-language 0.96) grammatical-semantic-language 0.93). All (ASD, ID, MHC) had significantly increased total scores, with highest scores being neurodevelopmental (ASD ID). In addition, we found group-specific patterns elevated grammatical-semantic ID group. was comparable distinguishing other groups. proposed as simplified easily applied, questionnaire for caregivers, assessing impairments across disorders Lay Summary designed identify who have problems social use language, however, it its application exhibits factors. created shorter simpler that called overcomes limitations CCC-2. It subscales: language. can be used short clinically relevant caregiver assesses adolescents. Autism Res 2021, 14: 759–772. © 2021 Authors. Research published by International Society Wiley Periodicals LLC.