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J Exp Psychol Gen. 2016 Mar;145(3):314-37. doi: 10.1037/xge0000135. Epub 2016 Jan 4.

Eye movements reveal fast, voice-specific priming.

Author information

1
Department of Psychology, Louisiana State University.
2
Department of Psychology, Arizona State University.
3
Department of Psychology, New Mexico State University.

Abstract

In spoken word perception, voice specificity effects are well-documented: When people hear repeated words in some task, performance is generally better when repeated items are presented in their originally heard voices, relative to changed voices. A key theoretical question about voice specificity effects concerns their time-course: Some studies suggest that episodic traces exert their influence late in lexical processing (the time-course hypothesis; McLennan & Luce, 2005), whereas others suggest that episodic traces influence immediate, online processing. We report 2 eye-tracking studies investigating the time-course of voice-specific priming within and across cognitive tasks. In Experiment 1, participants performed modified lexical decision or semantic classification to words spoken by 4 speakers. The tasks required participants to click a red "x" or a blue "+" located randomly within separate visual half-fields, necessitating trial-by-trial visual search with consistent half-field response mapping. After a break, participants completed a second block with new and repeated items, half spoken in changed voices. Voice effects were robust very early, appearing in saccade initiation times. Experiment 2 replicated this pattern while changing tasks across blocks, ruling out a response priming account. In the General Discussion, we address the time-course hypothesis, focusing on the challenge it presents for empirical disconfirmation, and highlighting the broad importance of indexical effects, beyond studies of priming.

PMID:
26726911
PMCID:
PMC4755801
DOI:
10.1037/xge0000135
[Indexed for MEDLINE]
Free PMC Article

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