Table 6: Criteria of Categorical Auditory Performance and Speech Intelligibility Rating scales.

RatingCriteria of Categorical Auditory PerformanceCriteria of Speech Intelligibility Rating

7Use of telephone with known listenern/a
6Understanding of conversation without lip-readingn/a
5Understanding of common phrases without lip-readingConnected speech is intelligible to all listeners. Child is understood easily in everyday contexts
4Discrimination of some speech sounds without lip-readingConnected speech is intelligible to a listener who has a little experience of a deaf person’s speech
3Identification of environmental soundsConnected speech is intelligible to a listener who concentrates and lip-reads
2Response to speech soundsConnected speech is unintelligible. Intelligible speech is developing in single words when context and lip-reading cues are available
1Awareness of environmental soundsConnected speech is unintelligible. Prerecognizable words in spoken language, primary mode of communication may be manual
0No awareness of environmental soundsn/a

n/a = not applicable.