This study discusses the development of a qualitative assessment to profile prosodic skills of Cantonese-speaking children with speech defects, and correlates it with a quantiative assessment of productive skills. The study entails the use of the Visi-pitch to provide objective data for assessment. The aim is to devise a comprehensive description of prosodic skills for purposes of assessment and intervention. Videotape recordings were made of each subject in a sound-treated studio with a one-side viewing window and mounted cameras. Each recording session consisted of a mother-child interaction in a naturalistic conversational environment. The mother of each child was to elicit the child to tell a story using a picture story book, and to talk about what they did over the weekend. The analytic approach involved transcription of the video recording at the morphological and phonological levels. The transcribed units were then divided into tone units. For each subject, the results were summarized on a profile. The recordings were analyzed by two experimenters, and the results were compared. The reliability of the profile description of each subject's performance was also assessed by reviewing other parts of the recording of the same subject. (VWL)