Speech Sound Disorders- Test 2 Flashcards
What is speech perception important for?
Speech therapy, AAC, second language learners, text-to-speech, computer speech recognition, cell phone, Internet, communication technology, hearing aid technology, cochlear implant
Why study speech perceptions?
Speech is a natural mode of communication
-Insight to speech production
-Speech perception basic to what it means to be human
Speech links 2 brains efficiently and reliably: no perception=no meaning
Better understanding of the brain
Basic issues in speech perception
General auditory perception vs. categorical
Acoustic-phonetic variance
Units of representation not external
Development of speech perception theories
Practical implications of theory
Describe acoustic-phonetic invariance.
Theory from the 50s that acoustic qualities of a speech sound couldn’t be different.
Describe the development of speech perception theories.
Motor speech perception to internal representation of the sound is the same
What are the practical implications of speech perception theories?
Describes the relationship between perception and production.
Describe general auditory perception.
Hearing in general. Increased frequency= increased pitch
Describe categorical perception.
Hear the phonemes discretely
Hear either one phoneme or another
One way to discriminate is by voice onset time
- show rapid change in identification of the phoneme
-shows discrete ability to discriminate between phonemes
What did Gierut, Morrisette, and Ziemer discuss?
Nonwords vs. real words used for therapy targets and generalizability
What are some reasons to choose real word stimuli?
Practice hearing, sampling, practicing, and engaging in processing a variety of linguistic and articulatory information about real words
Leads to expanded phonemic and phonetic inventories, improved intelligibility, and enhanced communication
What are some reasons to choose nonwords?
Reduce processing demands, facilitate automaticity, reduce interference from known words to promote carryover
What are nonwords?
Novel, phonetically permissible sound strings affiliated with referents
Describe the generalization of nonwords.
Immediate post treatment, greater than on RW generalization, but RW generalization occurred more during the 55days post whereas the NW tended to stay still
Define lexical configuration.
Assembly of words, phonemic composition, syllable structure, meaning, and/or orthographic representation
Define lexical engagement.
How a word becomes an embedded representation in the mental lexicon fully able to function and interact with other lexical entries
According to Gierut et al., what is the benefit of using NW?
NW bring phonological properties to the forefront- may jump start/ facilitate the learning process, but then followed by inhibition caused by interference of other words
Describe one factor that could have influenced the generalization trend of the RW and NW after 55 days.
NWs suffering from interference of other words in its lexicon
RWs may have a slower, but more progressive rate of generalization of speech sounds to other words
Who wrote the Lexical Organization and Phonological Change in Treatment article?
Morrisette and Gierut
What are the 5 parameters Morrisette and Gierut discussed that are used to organize words in a mental lexicon?
Articulatory and acoustic factors, perception, learning, metalinguistic, and psycholinguistic
Define neighborhood density.
Number of words that a minimally different in phonetic structure from a given word
Define word frequency.
Number of times a word appears in a language
What was the purpose of the article written by Morrisette and Gierut on lexical organization and phonological change in treatment?
Determine if properties of lexical organization differentially influence productive sound change in treatment
What were the independent variables in the Morrisette and Gierut article?
Word frequency and neighborhood density
What were the four experimental groups from the Morrisette and Gierut article?
High frequency, low frequency, high density, low density?
What were the results of the study conducted by Morrisette and Gierut?
High frequency words had a significantly greater chance of generalizing within and across classes than low frequency words
Low frequency words did not result in significant levels of generalization
High density words resulted in less generalization than low density words
What are some clinical implications of the Morrisette and Giereut article?
Choose targets based in types of generalization you are aiming for
Low density words may reduce processing time which leads to increased phonological change
Who wrote the article on complexity in phonological treatment?
Gierut
Define treatment effectiveness.
Whether a given treatment works or not
Define treatment effects.
Behavioral changes that occur following treatment
Define treatment efficacy
Whether one treatment method is better than another
What is the most important aspect to consider when choosing a treatment method?
Treatment efficacy/ whether one treatment method is better than another
What is the ultimate goal of therapy according to Gierut (2001)?
Generalization- the transfer of learning
Define within class generalization.
Change in untreated sounds from same manner class as the treated sound
Define across-class generalization.
Change in untreated sounds from different manner classes than the treated sound class
What type of generalization is more desirable according to Gierut (2001)?
Across-class generalization
What are four factors related to complexity?
Linguistic structure, psycholinguistic structure, articulatory phonetic factors, and conventional clinical factors
Define consistent errors.
Have 0% accurate productions in all relevant words and word positions
Define inconsistent errors.
Variable productions whereby a target sound is produced accurately on some occasions in certain words or in select word positions
According to Gierut (2001), which type of error demonstrates more phonological knowledge?
Inconsistent
When choosing target phonemes, Gierut (2001), discusses consistency of errors. What type should you choose and why?
Consistent because it’ll lead to increased generalization to both treated and untreated sounds or consistent or inconsistent errors. Also, thought to be more complex
Regarding age of acquisition, what type of sounds does Gierut (2001) suggest choosing and why?
Late because more complex and more likely to generalize across classes. Late and early same generalization for treatment sound and within class generalization
Regarding goal attack strategy, which does Gierut (2001) suggest and why? Empty set, maximal pairs, or minimal pairs?
More complex- teaching two new target sounds in empty set pairs because leads to increased generalization when compared to maximal or minimal pairs