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Table 3 Internal consistency reliability of CAS test battery

From: Developing a test battery for diagnosis of childhood apraxia of speech in Arabic speakers

Group

Items

Cronbach’s Alpha

Apraxia

 Group I (N = 10)

6

0.805**

Phonological disorders

 Group II (N = 20)

6

0.799*

Normal

 Group III (N = 40)

6

0.836**

  1. *Acceptable when 0.7 ≤ α < 0.8
  2. **Good when0.8 ≤ α < 0.9