The Children’s Communication Checklist, is 70-item parent / carer rating questionnaire assessing language structure and form, and verbal and nonverbal pragmatic communication. Scaled scores (M = 10, SD = 3) are derived for 10 subscales that form three categories measuring different aspects of language use. The first four scales Speech, Syntax, Semantics and Coherence assess language structure, vocabulary use, and discourse. The next four scales Inappropriate Initiation, Stereotyped Language, Use of Context and Nonverbal Communication index verbal and nonverbal pragmatic communication skills. The final two scales, Social relations and Interests assess aspects of language behaviour typically associated with Autism Spectrum Disorders. Please note that the scoring instructions and the wording of each item are subject to copyright and are therefore not available in the data release.