Assessment and Scoring CAPD Flashcards
CAPD Evaluation Team
Audiologist
speech and language pathologist
psychologist
social worker
parents
physician
What is a test battery?
includes a number of tests to diagnose a certain condition
why use test battery and not single sensitive diagnostic test to diagnose CAPD
CAPD is not unitary disorder
- clinical presentations vary from number of mechanisms and auditory processes affected
- different measures are required for accurate assessment of central auditory processes
Test Battery Approach: questions asked to ensure diagnostic accuracy and usefulness
1) does the battery improve sensitivity and specificity over using individual tests
2) How many tests are needed to obtain optimal sensitivity and specificity
3) which combination if tests give the best sensitivity and specificity
how many tests can provide maximum sensitivity
2-3 tests in CAPD Battery or 4
lax criterion will yield better but poorer
better sensitivity but poorer specificity
strict criterion will yield better but poorer
better specificity but poorer sensitivity
reason behind lax criterion trend
as size of test battery increases greater probability that a patient will fail any single test
- normal patients have increased change of being incorrectly identified
reason behind the strict criterion trend
as size of test battery increases, less probability that a patient will fail all tests
patient more likely to fail all tests when a battery has 2 to 3 tests compared to when it has 10 (more opportunities to pass)
Intermediate criterion
most reliable
abnormal performance on at least 2 tests (>2SD below mean)
-abnormal performance on at least 1 tests (>3SD below mean)
CAPD Test Battery Consideration
Test sensitivity
Test reliability
ease of administration
population characteristics
Tests sensitivity and specificity
tests with relatively low sensitivity/specificity are not useful diagnostic indicators of CAPD
Tests reliability
test should demonstrate test retest consistency and age appropriate norms
ease of demonstration
tests requiring extensive training, time and client practice are not appropriate for most clinical settings
population characteristics
age appropriate
location appropriate
cultural and linguistic diversity
symptom specific considerations
test battery process should not be test driven it should be motivated by the referring complaint and the relevant information available to audiologist
patient specific considerations
patient developmental maturity to complete auditory tasks
- language development, motivation level, attention and cognitive factors, cultural influences, native language
auditory processes umbrella terms
dichotic processes
temporal processes
binaural interaction
-monaural low redundancy speech auditory closure processes
examples of dichotic processes
dichotic digits
competing sentences
SSI - CCM
SSW
example of Temporal Processes
Gaps in noise
random gap detection test
duration pattern test
pitch pattern test
example of binaural interaction
auditory fusion
masking level difference