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PediatricAudiometry1

Pediatric Audiology - Behavioral Tests

QuestionAnswer
child hearing development - at birth infant has already had hearing ability for four months; prefers mother's voice
child hearing development - at 4 months infant can discriminate between two phonemes
child hearing development - 6 months infant had learned all sounds/phonemes of language
child hearing development - 8 months infants can distinguish between all phonemes of all languages; e.g. Japanese infants can discern /l/ and /r/ even though these are allophones in Japanese
child hearing development - 28 weeks cochlea fully developed and adult sized
initial aspects of pediatric audiometry 1. obtain case history, 2. physical inspection of ears, 3. observe and interact informally with child
auditory behavior index: 0 - 6 weeks eye-blink, eye-widening, startle, arousal/stirring from sleep; 40 dB HL speech
auditory behavior index: 6 weeks - 4 months eye-blink, eye-widening, eye shift, quieting, rudimentary hear rusn starts by 4 months; 47 dB HL speech
auditory behavior index: 4 - 7 months head turn laterally toward sound, listening attitude; 21 dB HL speech
auditory behavior index: 7 - 9 months directly localizes to side, indirectly localizes below ear level; 15 dB HL speech
auditory behavior index: 9 - 13 months directly localizes to side and below ear level, indirectly localizes above ear level; 8 dB HL speech
auditory behavior index: 13 - 16 months directly localizes to side/below/above ear level; 5 dB HL speech
minimum response level MRL; not a hearing threshold
pediatric audiometry - two types of measures 1. behavioral, 2. physiological; audiologist will always complete one of each with child
behavioral measures Behavioral Observation Audiometry, Visual Reinforcement Audiometry/Localization Audiometry, Tangible & Visual Reinforcement Operant Conditioning Audiometry, Play Audiometry
BOA Behavioral Observation Audiometry
VRA Visualization Reinforcement Audiometry (also known as Localization Audiometry)
TROCA Tangible Reinforcement Operant Conditioning Audiometry
VROCA Visual Reinforcement Operant Conditioning Audiometry
CPA Conditioned Play Audiometry
Behavioral Observation Audiometry < 4 months; watch baby's response to relatively sudden intense sounds; stimuli presented in sound field; response judged by two examiners
BOA - sources of variability examiner judgement subject to bias; measure responsiveness to sound, not threshold; responses vary with age; habituation; normal range is large
Visual Reinforcement Audiometry 5 months - 2 years; single loudspeaker and reinforcer used; reinforcement device is a toy that is illuminated and moves; infant's response must be a clear head to the loudspeaker/reinforcer; responses judged by two examiners
Tangible and Visual Reinforcement Operant Conditioning Audiometry 6 - 24 months; speaker placed in front of child; requires simple but specific motor response within range of neuromotor capabilities; reinforce by delivery of tangible or visual reward; fake positives discourages by time out periods
Play Audiometry 2 - 5 years; 2 examiners communicate via intercom; requires specific motor response within framework of a game; tell and demonstrate what to do; social reinforcement such as smile, praise, etc.
Created by: sullivancl
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