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        | The Study of speech sounds and sound patterns. |  | 
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        | a sound type or family, functions to distinguish between words. |  | 
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        | variation of difference in a phoneme at the phonemic level. (dialects/accents) |  | 
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        | characteristics used to describe phonemes   -acoustic -articulatory -perceptual properties   |  | 
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        | The rules that specify how a word is pronounced. |  | 
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        | occur regularly often in language. |  | 
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        | Levels of representation? |  | Definition 
 
        | Overt- surface level, what we hear. What the child says (gog for dog)   Covert- underlying classification, meaning and rules. What the child uses to produce "dog". |  | 
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        | A systematic sound change affecting a class or group of sounds. |  | 
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        | mental operations present at birth that restrict speech production. |  | 
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        | 2 words in which a segement differs by one feature. |  | 
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        | Stages of development---The primitive system |  | Definition 
 
        | 1. nasal/ labials/etc   child has some control   |  | 
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        | Stages of development---The vowels |  | Definition 
 
        | 2. Mastered by age 3. Learned 4 primary vowels |  | 
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        | Stages of Development---The Stop Nasal System |  | Definition 
 
        | 3. Age 4. Fronting decreases Refines place and manner |  | 
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        | Stages of Development---The Semi-Vowel System |  | Definition 
 
        | 4 By end of age 4 sounds behave like vowels and consonants |  | 
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        | Stages of Development---The continuant system |  | Definition 
 
        | 5. Develops by end of age 5. Child controls duration of consonants. |  | 
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        | Stages of Development---The Sibilant System |  | Definition 
 
        | Last stage 6-8 yrs. Adds stridency and mellow. |  | 
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        | A class or group of phonemes that can be defined w/ fewer features than any of its members alone.   EX: Nasals (m,n,nj) EX: Nasals + bilabial = natural class. |  | 
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        | systematic sound change affecting a class of sounds or sound sequences. |  | 
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        | regularly occuring patterns in child's speech used to simplify adult targets. |  | 
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        | Syllable Structure, Substitution, Assimilation |  | 
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        | Components of a Complete Assessment |  | Definition 
 
        | --Determine if prerequisite behavior for spoken language is present --Current hearing/ oral motor skills --Current Speech and language skills --Underlying cause or contributing factors.
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