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There has not been any valid method for the clinical diagnosis of Childhood Apraxia of Speech (CAS) up to now, and the golden standard for diagnosis is the expert's opinion. The current research was conducted to obtain criteria used by the Iranian Speech-Language Pathologists (SLPs) to establish speech characteristics and co-occurring problems of CAS based on their knowledge and clinical experience.

This research used a questionnaire-based survey design for data collection. The questionnaire was filled out by 260 anonymous participants, both physically and online.

The nine top speech characteristics reported with 75.6% agreement as the core symptoms of CAS included: inconsistency (86.9%), consonant sequencing problems (75%), low intelligibility (75%), groping (72.7%), slow diadochokinetic (DDK) (72.3%), articulatory configuration problems (66.2%), difficulty with …