Listening effort at signal-to-noise ratios that are typical of the school classroom

Abstract Objective: The aim of the study was to measure listening effort at typical classroom signal-to-noise ratios (SNRs). Design: Listening effort was measured using a dual task paradigm. Participants repeated monosyllabic words presented in a background of children's chatter (primary task) at SNRs that are considered typical of the school classroom environment (quiet,+4, 0, -4 dB) while simultaneously rehearsing sets of five digits for recall (secondary task). High listening effort requires greater cognitive resources and is associated with reduced performance on the secondary task. Study sample: Thirty one normal-hearing children (9-12 years). Results: Performance was generally maintained on the listening task when multitasking; however, performance decreased on the secondary recall task, especially at the more negative SNRs. Conclusions: This demonstrates that considerable listening effort is required when listening at SNRs that are typical of the school classroom. © 2010 British Society of Audiology, International Society of Audiology, and Nordic Audiological Society.