Children with hearing-impairment and children with normal hearing learn to recognize speech sounds and identify words as they contrast pairs of stimuli with progressively similar acoustic features.
This program is for children with:
cochlear implants
hearing loss and hearing aids
weakness in auditory discrimination
disorders of speech sound awareness
CAST uses a bottom-up approach in which the parts of the speech signal (e.g., suprasegmental characteristics and vowel and consonant features) are highlighted and contrasted to improve speech recognition ability. Pairs of stimuli with grossly different acoustic characteristics are introduced and practiced before those with finer acoustic distinctions.
The 30-page manual includes:
CAST pretest
guidelines and procedures
training hierarchy
cueing techniques
criterion levels
There are 150 double-sided picture/stimulus cards. The front and back of each card has two illustrations that contrast the target acoustic characteristics. There are 28 pretest cards to help determine the need for auditory training and the level at which to begin listening practice. The remaining cards contrast:
presence and absence of speech
long versus short speech sound productions
continuous versus interrrupted speech sound productions
words with one, two, and three syllables
phonemically dissimilar words (e.g., bowl/cup, camel/giraffe)
wide and narrow vowel minimal pair words (e.g., heat/hat, top/tap)
consonant manner minimal pair words (e.g., kick/chick, saw/jaw)
consonant voicing minimal pair words (e.g., sip/zip, fan/van)
consonant place minimal pair words (e.g., feet/seat, gate/date)
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