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The Brief Communication Battery is a 10–15 minute instrument used to screen receptive and expressive grammar and semantics, discourse, reading, writing, and speech production of 31 healthy subjects and 82 patients. Alzheimer's disease (AD), schizophrenic (SZ) and Huntington (HD) patients scored significantly lower than normal subjects, revealing communication difficulties in patients who are not classically aphasic and in patients with Mini-Mental Status Exam scores in the normal range (SZ, HD). The BCB proved to be a reliable and provisionally valid instrument for screening communication.