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Children's recall of words spoken in their first and second language: Effects of Signal-to-Noise Ratio and Reverberation Time
Dalarna University, School of Education, Health and Social Studies, Sport and Health Science. University of Gävle; University of Linköping.ORCID iD: 0000-0002-2730-7200
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2016 (English)In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 6, no JAN, 2029Article in journal (Refereed) PublishedText
Abstract [en]

Speech perception runs smoothly and automatically when there is silence in the background, but when the speech signal is degraded by background noise or by reverberation, effortful cognitive processing is needed to compensate for the signal distortion. Previous research has typically investigated the effects of signal-to-noise ratio (SNR) and reverberation time in isolation, whilst few have looked at their interaction. In this study, we probed how reverberation time and SNR influence recall of words presented in participants' first- (L1) and second-language (L2). A total of 72 children (10 years old) participated in this study. The to-be-recalled wordlists were played back with two different reverberation times (0.3 and 1.2 s) crossed with two different SNRs (+3 dBA and +12 dBA). Children recalled fewer words when the spoken words were presented in L2 in comparison with recall of spoken words presented in L1. Words that were presented with a high SNR (+12 dBA) improved recall compared to a low SNR (+3 dBA). Reverberation time interacted with SNR to the effect that at +12 dB the shorter reverberation time improved recall, but at +3 dB it impaired recall. The effects of the physical sound variables (SNR and reverberation time) did not interact with language. © 2016 Hurtig, Keus van de Poll, Pekkola, Hygge, Ljung and Sörqvist.

Place, publisher, year, edition, pages
2016. Vol. 6, no JAN, 2029
Keyword [en]
Children, Classroom acoustics, Reverberation time, Second-language, Signal-to-noise ratio, Speech perception
National Category
Health Sciences
Research subject
Health and Welfare
URN: urn:nbn:se:du-21289DOI: 10.3389/fpsyg.2015.02029ScopusID: 2-s2.0-84959420428OAI: diva2:914574
Available from: 2016-03-24 Created: 2016-03-24 Last updated: 2016-03-24

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