Validity and reliability of the communication and symbolic behavior scales developmental profile with very young children.


Three studies were conducted to evaluate the validity and reliability of the three measures of the Communication and Symbolic Behavior Scales Developmental Profile (CSBS DP): (1) a one-page parent-report checklist; (2) a four-page follow-up caregiver questionnaire (CQ); and (3) a behavior sample (BS), which is a face-to-face evaluation of the child… (More)


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