Evaluation of the NAL-NL1 and DSL v4.1 prescriptions for children: Preference in real world use

Susan Scollie*, Teresa Y C Ching, Richard Seewald, Harvey Dillon, Louise Britton, Jane Steinberg, Joseph Corcoran

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


This paper reports real world preferences of children in a double-blind, cross-over trial comparing NAL-NL1 and DSL v.4.1 prescriptions. Twenty-four children wore digital WDRC hearing aids at each site (Australia, Canada). Multi-memory hearing aids provided the NAL and DSL programs in each of two memories. Diaries were completed during two counterbalanced trials, providing overall preference, situational preference, and preference comments. Ratings were reliable, and situational preferences factored into quiet/low level situations versus noisy/reverberant/high level situations. Children at both sites used DSL v4.1 for hearing low level speech, or when they wanted to hear loudly and clearly. Children used NAL-NL1 when they wished to hear sounds at a lower level, or to reduce background noise. Children expressed strong preferences for having the choice of both programs. Canadian children were more likely to prefer DSL than were the Australian children. Factors such as listening environment and prior listening experience are discussed in interpreting these findings.

Original languageEnglish
Pages (from-to)S49-S63
Number of pages15
JournalInternational Journal of Audiology
Issue numberSUPPL. 1
Publication statusPublished - 2010
Externally publishedYes


  • Children
  • Choice behavior
  • Cross-over studies
  • Double-blind methods
  • DSL
  • Hearing aids
  • Hearing loss
  • Loudness perception
  • NAL
  • Noise
  • Preference
  • Qualitative research
  • Speech perception


Dive into the research topics of 'Evaluation of the NAL-NL1 and DSL v4.1 prescriptions for children: Preference in real world use'. Together they form a unique fingerprint.

Cite this