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Siemens Expert Series: NAL-NL2 - Principles, Background Data, and Comparison to Other Procedures

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1.  The rationale underpinning the NAL-NL2 prescription procedure is:
  1. Maximize calculated intelligibility while keeping total loudness no greater than normal
  2. Maximize speech quality
  3. Minimize the interfering effects of background noise
  4. Minimize loudness discomfort
  5. Normalize frequency-specific loudness
2.  Compared to new users of hearing aids, experienced users with moderate hearing loss:
  1. Prefer slower compression
  2. Prefer less gain
  3. Prefer about the same gain
  4. Prefer more gain
  5. None of the above
3.  To adequately prescribe a hearing aid for an individual:
  1. Frequency resolution should be measured as it varies greatly between individuals
  2. Frequency resolution need not be measured as it is highly correlated with hearing thresholds
  3. A test of dead regions must be made as two people with the same hearing loss will have different requirements depending on the frequency range over which the inner hair cells are functioning
  4. The correct answer to this question is somewhat uncertain.
4.  Which of the following characteristics of hearing aid wearers are correlated with a person's ability to understand speech once it has been amplified to be completely audible:
  1. Age & Hearing thresholds
  2. Cognitive ability
  3. Frequency resolution
  4. Temporal resolution
  5. All of the above
5.  Compared to hearing aids for people with moderate hearing loss, how should hearing aids for people with severe or profound hearing loss be adjusted:
  1. Fast-acting compression should have higher compression ratios because of the clients' greatly reduced dynamic range
  2. Fast-acting compression should have lower compression ratios because of the clients' reliance on intensity fluctuations
  3. Compression thresholds should be lower to minimize the likelihood of feedback oscillation occurring
  4. None of the above.
6.  Experimental data has shown that, for children with congenital hearing loss, the NAL-NL1 prescription procedure:
  1. Prescribes less gain than children prefer, on average
  2. Prescribes more gain than children prefer, on average
  3. Prescribes the amount of gain children prefer, on average
  4. Can't be assessed, as children don't know what loudness they should have.
7.  When practical considerations are taken into account, real ear response is best verified by:
  1. Measuring insertion gain for infants and for adults
  2. Measuring insertion gain for infants and REAG for adults
  3. Measuring RECD for infants and insertion gain for adults
  4. Reading the predicted gain displayed by the fitting software
8.  Compared to women, on average:
  1. Men prefer less gain
  2. Men prefer more gain
  3. Men prefer the same gain
  4. It all depends on whether the man really wants to listen
  5. Irrelevant, men never listen
9.  Which single factor is the overall best predictor of individual speech performance?
  1. Age
  2. Cognition
  3. HTL
  4. Frequency resolution
  5. Dead regions
10.  What impact is the Trainable Hearing Aid likely to have on hearing aid prescription and fitting processes?
  1. Initial prescription and adjustment may not be necessary
  2. Audiologists may no longer be necessary
  3. Measurement of real-ear gain may not be necessary
  4. Replacement hearing aids may not be needed as the old one can be re-trained