A study investigated the appropriate use and interpretation of a phonological test, the Computer Analysis of Phonological Processes (CAPP), with children who are not speakers of Standard English. In the test, three-dimensional objects are used to elicit spontaneously a carefully designed word list including all American English phonemes and 31 consonant clusters. The CAPP requires less than 20 minutes to administer and can be scored manually or by computer. Subjects were seventy-two 4-year-old speakers of Black English in three Head Start programs. Results indicate that while Black English phonological rules do affect specific test items on the CAPP, the information provided by the test appears not to be negatively influenced by the Black English dialect spoken by the children. In two case studies, the CAPP provided useful information for speech-language pathologists to help determine the degree of articulation disorder, amount of pattern deviations, type of therapy most appropriate for the child, and amount of improvement gained. (Author/MSE)