Searching for a talking face: The effect of degrading the auditory signal

Stacey, Paula C.; Murphy, Thomas; Sumner, Christian J.; Kitterick, P�draig T.; Roberts, Katherine L.

Abstract

Previous research (e.g., McGurk & MacDonald, 1976) suggests that faces and voices are bound automatically, but recent evidence suggests that attention is involved in a task of searching for a talking face (Alsius & Soto-Faraco, 2011). We hypothesized that the processing demands of the stimuli may affect the amount of attentional resources required, and investigated what effect degrading the auditory stimulus had on the time taken to locate a talking face. Twenty participants were presented with between 2 and 4 faces articulating different sentences, and had to decide which of these faces matched the sentence that they heard. The results showed that in the least demanding auditory condition (clear speech in quiet), search times did not significantly increase when the number of faces increased. However, when speech was presented in background noise or was processed to simulate the information provided by a cochlear implant, search times increased as the number of faces increased. Thus, it seems that the amount of attentional resources required vary according to the processing demands of the auditory stimuli, and when processing load is increased then faces need to be individually attended to in order to complete the task. Based on these results we would expect cochlear-implant users to find the task of locating a talking face more attentionally demanding than normal hearing listeners.

Citation

Stacey, P. C., Murphy, T., Sumner, C. J., Kitterick, P. T., & Roberts, K. L. (2014). Searching for a talking face: The effect of degrading the auditory signal. Journal of Experimental Psychology: Human Perception and Performance, 40(6), 2106-2111. https://doi.org/10.1037/a0038220

• Journal Article Type: Article
• Acceptance Date: Aug 18, 2014
• Online Publication Date: Oct 20, 2014
• Publication Date: Dec 1, 2014
• Deposit Date: Oct 27, 2016
• Publicly Available Date: Oct 27, 2016
• Journal: Journal of Experimental Psychology: Human Perception and Performance
• Print ISSN: 0096-1523
• Electronic ISSN: 0096-1523
• Publisher: American Psychological Association
• Peer Reviewed: Peer Reviewed
• Volume: 40
• Issue: 6
• Pages: 2106-2111
• DOI: https://doi.org/10.1037/a0038220
• Public URL: https://nottingham-repository.worktribe.com/output/993771
• Publisher URL: http://psycnet.apa.org/index.cfm?fa=search.displayrecord&uid=2014-43705-001
• Additional Information: This article may not exactly replicate the final version published in the APA journal. It is not the copy of record.