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The Devil is in the Fitting Details

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1.  The evidence based prescriptions NAL-NL2 and DSL v5.0 share the following in common: Use of speech-like signals as the stimulus of choice Provide targets for soft, average and loud inputs Provide hearing aid brand dependent targets All of the above A and B

2.  NAL-NL2 is based on the premise of Loudness summation Loudness normalization Loudness equalization None of the above All of the above

3.  DSL v5.0 Provides targets for Infants and Adults Cannot be used to generate targets for Adults Is based on the premise of loudness normalization Both A and C None of the above

4.  Which of the following factors can affect the accuracy of the verification process? Conversion factors used to display hearing loss and targets in ear canal SPL The level and shape of the input signal Method used to analyze the measured output at the eardrum A, B and C None of the above

5.  The only mandatory information required by user to generate NAL NL2 targets is: Air and bone conduction thresholds from 500 to 8000 Hz Air conduction thresholds from 500 to 8000 Hz Air conduction thresholds at 500 and 2000 Hz None of the above All of the above

6.  NAL NL2 targets generated for a specific hearing loss by different probe microphone or real ear systems May vary because HL to SPL conversions can vary between systems Should be exactly the same across all equipment manufacturers Should be the same because REDD, RECD and REUG applied by each system are provided by ANSI 2011 None of the above All of the above

7.  Targets generated by hearing aid fitting software and probe microphone systems might be different because: Signal type used to generate the targets might not be the same Mismatch between the Monaural vs Binaural fitting detail Mismatch between versions of the prescriptive target A, B and C B and C

8.  The following are required inputs for DSL v5.0b[i/o]: Age, Monaural vs Binaural, Gender Age, Monaural vs Binaural, Quiet vs Noise Program LDLs, UCLs, Experience with amplification AC Audiogram, BC Audiogram, SRT All of the above

9.  Aided response targets (SPL) or REAR for NAL NL2 Are derived by adding the Aided Gain to the input signal spectrum Are provided by NAL NL2 so they should be exactly the same for all real ear systems Are the same as gain targets All of the above A and B

10.  Venting does not appear to influence Real Ear SPL targets because Vents have no affect on the ear canal SPL Venting is a thing of the past Optimal ear canal SPL for a given hearing loss is independent of the size of the vent All of the above None of the above