Difference Between CAS and Phonological Disorder

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Childhood Apraxia of Speech vs Phonological Disorder

  • CAS: inconsistent errors (same words said differently each time) vs Phonological: consistent errors
  • CAS: often have vowel errors vs phonological: rarely have vowel errors
  • CAS: errors increase as utterance length increases vs Phonological: consistent errors
  • CAS: automatic or well rehearsed speech is much easier vs Phonological: all speech equally hard
  • CAS: rate, rhythm and stress of speech is disturbed vs Phonological: is not

Links:  http://www.apraxia-kids.org/library/a-comparison-of-childhood-apraxia-of-speech-dysarthria-and-severe-phonological-disorder/