Use of the Clark-Madison Test of Oral Language with the hearing-impaired: a content validity and comparative study

This study examined the content validity of the Clark-Madison Test of Oral Language (CMTOL) as a measure of nonwritten expressive language with hearing-impaired children. Twenty severely hearing-impaired children were administered the CMTOL using total communication. All test administrations were considered valid. The content of the test was generally found to be valid. The content validity of selected items is discussed. A comparison of the performance of the hearing-impaired to a group of normal-hearing respondents revealed a different profile of strengths and weaknesses than did intragroup analysis.