APD and ELL Flashcards
- (C)APD
- ELL
- LLD
- (central) auditory processing disorder
- English Language Learners
- Language Learning Disability
(C) APD
- What you do with what you hear
- around for more than 30 years
- Still controversial
(C)APD definition
- difficulties in the processing of auditory information in the central nervous system” [which are not due to] “higher order language, cognitive or related factors
- But, referrals usually are a complaint about language or learning ability—more later
ELL
- Formerly English as a second language (ESL), or bilingual
- Individual’s first language is something other than English
— English could be a second, third, fourth language
- May/may not include cultural differences
— Some kids come with their families
— Some kids are adopted into American families
Routes to second language acquisition
- Simultaneous
- Successive
- Learn both languages at same time, often with different caregivers
- Learn one language (L1), then learn another language (L2); proficiency of L1 both before and during L2 acquisition can vary a lot
- Must determine most proficient language in order to assess language ability
Routes to second language acquisition
- Subtractive bilingualism
- Subtractive bilingualism occurs when L2 becomes the proficient language at the expense of L1
- Can happen in younger generation of family groups
- Very common in internationally adopted children
2005 Position paper on APD
- 5 skills affected
- CNS difficulties with auditory processing reflected by poor performance in one or more of the following skills:
— Sound localization and lateralization
— Auditory discrimination
— Auditory pattern recognition
- Auditory performance in competing signals, including dichotic listening (used to include noise as a competing signal, probably now in next descriptor)
- Auditory performance in degraded signal (such as noise?)
Temporal aspects on (C)APD
4
- Temporal aspects
— Temporal integration
— Temporal discrimination (gap detection)
— Temporal ordering
— Temporal masking
- Memory is not part of (C)APD
— Higher level process, not central auditory processing disorder
- Previously, memory was part of the disorder
Why is SLP involved in (C)APD
- ASHA advocates phonological awareness testing & training as SLP role
— Children with the (C)APD diagnosis often co-morbid with dyslexia, which in turn is associated with poor phonemic and phonological awareness
- ASHA places reading & writing within the SLP’s scope of practice
Typical Audiological Description Individuals with (C)APD
- Often has history of otitis media
- May have known/unknown ear infection on day of testing
- Says “huh” or “what” a lot
- Misses parts of directions
Otitis Media Myths and Facts
- Average loss is 20 dB (and M. Downs says 15 dB is significant, while C. Berlin says 10 dB)
- Average bout of OM is 1-3 months (or more)
- OM may often affect only one ear, but monaural listening negatively impacts ability to understand in noise and locate sounds
- “one ear is almost as good as two if you live in a sound proof chamber”
Typical S/L Needs of Individuals with (C)APD
- expressive language & speech difficulties
- oral and written production tasks affected
- social discourse difficulties; look off-topic in class discussions
- comprehension difficulties
- significant adverse academic impact: reading, spelling, writing tasks, following directions
(C)APD & “Academic” Difficulties
- Spelling
- Reading
— Both spelling & reading are “language-based”
- Attention
EDUCATIONAL QUESTIONS: IDENTIFYING INDIVIDUALS WITH (C)APD
- Phonics & speech sound discrimination poor
- Often misunderstand; requires speaker to repeat
- Says “huh”, “what” often (and then, often, “never mind”)
- Easily distracted by noises and/or behavior changes in noisy situation
- Forgets auditory information quickly
- Short attention span, especially auditory
Models of (C)APD categories
- Models attempt to differentiate different types of (C)APD
—- No one model is accepted
- All models include a “decoding” type vs. problems with competing signals (dichotic listening) and some include “integration” of auditory information
Decoding
- Slow responders, very possibly the “temporal processing” kids described by Tallal
- Say “huh” and “what” a lot
- Look a lot like kids with hearing impairment
- Very likely to have history of otitis media and phonological processing disorder as preschoolers
- Reading & spelling problems; poor phonetic ability
- Often misunderstand directions
Auditory Decoding Deficit (Bellis)
- “purest” APD, classic example
- “looks” like hearing loss
- Primary auditory cortex of dominant hemisphere
- Auditory discrimination errors
— Voiced cognate
— Other sound categories (the infamous “da-ga”)
- Missing information (auditory closure)
- Problems in noise
- Noise makes first two harder to achieve in any listener
(C)APD: DECODING & ASSOCIATED S/L DIFFICULTIES 1
- word-finding difficulties (poor phonological storage)
- articulation difficulties
— very likely severe phonological processing as preschooler
— /r/, /l/ substitutions and perceptual confusions as older school age child