Variability and stability in the McGurk effect: contributions of participants, stimuli, time, and response type
In the McGurk effect, pairing incongruent auditory and visual syllables produces a percept different from the component syllables. Although it is a popular assay of audiovisual speech integration, little is known about the distribution of responses to the McGurk effect in the population. In our firs...
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description | In the McGurk effect, pairing incongruent auditory and visual syllables produces a percept different from the component syllables. Although it is a popular assay of audiovisual speech integration, little is known about the distribution of responses to the McGurk effect in the population. In our first experiment, we measured McGurk perception using 12 different McGurk stimuli in a sample of 165 English-speaking adults, 40 of whom were retested following a one-year interval. We observed dramatic differences both in how frequently different individuals perceived the illusion (from 0 % to 100 %) and in how frequently the illusion was perceived across different stimuli (17 % to 58 %). For individual stimuli, the distributions of response frequencies deviated strongly from normality, with 77 % of participants almost never or almost always perceiving the effect (≤10 % or ≥90 %). This deviation suggests that the mean response frequency, the most commonly reported measure of the McGurk effect, is a poor measure of individual participants’ responses, and that the assumptions made by parametric statistical tests are invalid. Despite the substantial variability across individuals and stimuli, there was little change in the frequency of the effect between initial testing and a one-year retest (mean change in frequency = 2 %; test–retest correlation,
r
= 0.91). In a second experiment, we replicated our findings of high variability using eight new McGurk stimuli and tested the effects of open-choice versus forced-choice responding. Forced-choice responding resulted in an estimated 18 % greater frequency of the McGurk effect but similar levels of interindividual variability. Our results highlight the importance of examining individual differences in McGurk perception instead of relying on summary statistics averaged across a population. However, individual variability in the McGurk effect does not preclude its use as a stable measure of audiovisual integration. |
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r
= 0.91). In a second experiment, we replicated our findings of high variability using eight new McGurk stimuli and tested the effects of open-choice versus forced-choice responding. Forced-choice responding resulted in an estimated 18 % greater frequency of the McGurk effect but similar levels of interindividual variability. Our results highlight the importance of examining individual differences in McGurk perception instead of relying on summary statistics averaged across a population. However, individual variability in the McGurk effect does not preclude its use as a stable measure of audiovisual integration.</description><identifier>ISSN: 1069-9384</identifier><identifier>EISSN: 1531-5320</identifier><identifier>DOI: 10.3758/s13423-015-0817-4</identifier><identifier>PMID: 25802068</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Adolescent ; Adult ; Attention ; Behavioral Science and Psychology ; Brief Report ; Choice Behavior ; Classification ; Cognitive Psychology ; Experiments ; Female ; Humans ; Illusions ; Individuality ; Male ; Phonetics ; Psychology ; Psychophysics ; Reading ; Semantics ; Speech Perception - physiology ; Studies ; Visual Perception - physiology ; Young Adult</subject><ispartof>Psychonomic bulletin & review, 2015-10, Vol.22 (5), p.1299-1307</ispartof><rights>Psychonomic Society, Inc. 2015</rights><rights>Copyright Springer Science & Business Media Oct 2015</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c606t-2340dfe42a9308eb937032f3040f899fadd1df90562e7e51254196370c04d8fe3</citedby><cites>FETCH-LOGICAL-c606t-2340dfe42a9308eb937032f3040f899fadd1df90562e7e51254196370c04d8fe3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.3758/s13423-015-0817-4$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.3758/s13423-015-0817-4$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,780,784,885,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25802068$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Basu Mallick, Debshila</creatorcontrib><creatorcontrib>F. Magnotti, John</creatorcontrib><creatorcontrib>S. Beauchamp, Michael</creatorcontrib><title>Variability and stability in the McGurk effect: contributions of participants, stimuli, time, and response type</title><title>Psychonomic bulletin & review</title><addtitle>Psychon Bull Rev</addtitle><addtitle>Psychon Bull Rev</addtitle><description>In the McGurk effect, pairing incongruent auditory and visual syllables produces a percept different from the component syllables. Although it is a popular assay of audiovisual speech integration, little is known about the distribution of responses to the McGurk effect in the population. In our first experiment, we measured McGurk perception using 12 different McGurk stimuli in a sample of 165 English-speaking adults, 40 of whom were retested following a one-year interval. We observed dramatic differences both in how frequently different individuals perceived the illusion (from 0 % to 100 %) and in how frequently the illusion was perceived across different stimuli (17 % to 58 %). For individual stimuli, the distributions of response frequencies deviated strongly from normality, with 77 % of participants almost never or almost always perceiving the effect (≤10 % or ≥90 %). This deviation suggests that the mean response frequency, the most commonly reported measure of the McGurk effect, is a poor measure of individual participants’ responses, and that the assumptions made by parametric statistical tests are invalid. Despite the substantial variability across individuals and stimuli, there was little change in the frequency of the effect between initial testing and a one-year retest (mean change in frequency = 2 %; test–retest correlation,
r
= 0.91). In a second experiment, we replicated our findings of high variability using eight new McGurk stimuli and tested the effects of open-choice versus forced-choice responding. Forced-choice responding resulted in an estimated 18 % greater frequency of the McGurk effect but similar levels of interindividual variability. Our results highlight the importance of examining individual differences in McGurk perception instead of relying on summary statistics averaged across a population. However, individual variability in the McGurk effect does not preclude its use as a stable measure of audiovisual integration.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Attention</subject><subject>Behavioral Science and Psychology</subject><subject>Brief Report</subject><subject>Choice Behavior</subject><subject>Classification</subject><subject>Cognitive Psychology</subject><subject>Experiments</subject><subject>Female</subject><subject>Humans</subject><subject>Illusions</subject><subject>Individuality</subject><subject>Male</subject><subject>Phonetics</subject><subject>Psychology</subject><subject>Psychophysics</subject><subject>Reading</subject><subject>Semantics</subject><subject>Speech Perception - physiology</subject><subject>Studies</subject><subject>Visual Perception - physiology</subject><subject>Young Adult</subject><issn>1069-9384</issn><issn>1531-5320</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp1kV1rFTEQhhdRbK3-AG8k4I0XZ9vJ127iRUGK1kKLN-ptyMlO2tQ9mzXJCuffm-NpSxWEwCTMM-_M5G2a1xSOeS_VSaZcMN4ClS0o2rfiSXNIJaet5Aye1jt0utVciYPmRc63ACA73T1vDphUwKBTh038blOw6zCGsiV2Gkgu968wkXKD5MqdL-kHQe_RlffExamksF5KiFMm0ZPZphJcmO1U8qqWh80yhhWpEVd_FBPmubJIynbGl80zb8eMr-7iUfPt08evZ5_byy_nF2cfLlvXQVdaxgUMHgWzmoPCteY9cOY5CPBKa2-HgQ5e130Y9igpk4LqrkIOxKA88qPmdK87L-sNDg7r1HY0cwobm7Ym2mD-zkzhxlzHX0bUr5Egq8C7O4EUfy6Yi9mE7HAc7YRxyYb2VOp6BK_o23_Q27ikqa63oxSXnCtaKbqnXIo5J_QPw1AwOzvN3k5T7TQ7O42oNW8eb_FQce9fBdgeyDU1XWN61Pq_qr8BY6GrzQ</recordid><startdate>20151001</startdate><enddate>20151001</enddate><creator>Basu Mallick, Debshila</creator><creator>F. 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Beauchamp, Michael</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c606t-2340dfe42a9308eb937032f3040f899fadd1df90562e7e51254196370c04d8fe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Attention</topic><topic>Behavioral Science and Psychology</topic><topic>Brief Report</topic><topic>Choice Behavior</topic><topic>Classification</topic><topic>Cognitive Psychology</topic><topic>Experiments</topic><topic>Female</topic><topic>Humans</topic><topic>Illusions</topic><topic>Individuality</topic><topic>Male</topic><topic>Phonetics</topic><topic>Psychology</topic><topic>Psychophysics</topic><topic>Reading</topic><topic>Semantics</topic><topic>Speech Perception - physiology</topic><topic>Studies</topic><topic>Visual Perception - physiology</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Basu Mallick, Debshila</creatorcontrib><creatorcontrib>F. 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Magnotti, John</au><au>S. Beauchamp, Michael</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Variability and stability in the McGurk effect: contributions of participants, stimuli, time, and response type</atitle><jtitle>Psychonomic bulletin & review</jtitle><stitle>Psychon Bull Rev</stitle><addtitle>Psychon Bull Rev</addtitle><date>2015-10-01</date><risdate>2015</risdate><volume>22</volume><issue>5</issue><spage>1299</spage><epage>1307</epage><pages>1299-1307</pages><issn>1069-9384</issn><eissn>1531-5320</eissn><abstract>In the McGurk effect, pairing incongruent auditory and visual syllables produces a percept different from the component syllables. Although it is a popular assay of audiovisual speech integration, little is known about the distribution of responses to the McGurk effect in the population. In our first experiment, we measured McGurk perception using 12 different McGurk stimuli in a sample of 165 English-speaking adults, 40 of whom were retested following a one-year interval. We observed dramatic differences both in how frequently different individuals perceived the illusion (from 0 % to 100 %) and in how frequently the illusion was perceived across different stimuli (17 % to 58 %). For individual stimuli, the distributions of response frequencies deviated strongly from normality, with 77 % of participants almost never or almost always perceiving the effect (≤10 % or ≥90 %). This deviation suggests that the mean response frequency, the most commonly reported measure of the McGurk effect, is a poor measure of individual participants’ responses, and that the assumptions made by parametric statistical tests are invalid. Despite the substantial variability across individuals and stimuli, there was little change in the frequency of the effect between initial testing and a one-year retest (mean change in frequency = 2 %; test–retest correlation,
r
= 0.91). In a second experiment, we replicated our findings of high variability using eight new McGurk stimuli and tested the effects of open-choice versus forced-choice responding. Forced-choice responding resulted in an estimated 18 % greater frequency of the McGurk effect but similar levels of interindividual variability. Our results highlight the importance of examining individual differences in McGurk perception instead of relying on summary statistics averaged across a population. However, individual variability in the McGurk effect does not preclude its use as a stable measure of audiovisual integration.</abstract><cop>New York</cop><pub>Springer US</pub><pmid>25802068</pmid><doi>10.3758/s13423-015-0817-4</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Adolescent Adult Attention Behavioral Science and Psychology Brief Report Choice Behavior Classification Cognitive Psychology Experiments Female Humans Illusions Individuality Male Phonetics Psychology Psychophysics Reading Semantics Speech Perception - physiology Studies Visual Perception - physiology Young Adult |
title | Variability and stability in the McGurk effect: contributions of participants, stimuli, time, and response type |
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