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Background and Aims The intelligibility context scale (ICS) is the first screening tool for the intelligibility of speech. The ICS assesses parents’ perceptions of their child’s speech clarity in real situations when talking with different people and has been adapted into more than 60 languages. The purpose of the current study was to evaluate the psychometric properties of the ICS-Persian in preschool Persian-speaking children.Methods This is a validation and instrumentation research study. The parents of 118 children aged 4 to 6 years with and without speech sound disorders (SSD) from 10 kindergartens in Isfahan were recruited to the study through a clustered randomized sampling method. A speech therapist evaluated all children to confirm their overall health. Their parents completed the ICS-Persian, and the Ages and Stages Questionnaire (ASQ) was completed for each child to determine the convergent validity …