2022
The multisensory cocktail party problem in children: Synchrony-based segregation of multiple talking faces improves in early childhood
Lewkowicz D, Schmuckler M, Agrawal V. The multisensory cocktail party problem in children: Synchrony-based segregation of multiple talking faces improves in early childhood. Cognition 2022, 228: 105226. PMID: 35882100, DOI: 10.1016/j.cognition.2022.105226.Peer-Reviewed Original ResearchConceptsPerceptual segregationTalking faceSame utteranceCocktail party problemEarly childhoodAV speechAudiovisual speechTalker's mouthSelective attentionMultiple talkersDevelopmental emergenceEye trackingParty problemTalkersDifferent facesSpeechUtterancesChildrenFaceChildhoodAttentionPowerful basisMeaningful informationSynchronyVersionViolation of non‐adjacent rule dependencies elicits greater attention to a talker's mouth in 15‐month‐old infants
Birulés J, Martinez‐Alvarez A, Lewkowicz D, de Diego‐Balaguer R, Pons F. Violation of non‐adjacent rule dependencies elicits greater attention to a talker's mouth in 15‐month‐old infants. Infancy 2022, 27: 963-971. PMID: 35833310, PMCID: PMC9542527, DOI: 10.1111/infa.12489.Peer-Reviewed Original ResearchConceptsNon-adjacent dependenciesTalker's mouthTest trialsAudiovisual speechSelective attentionAuditory speechTalker's faceInfant attentionInfants' discriminationFamiliar trialsArtificial languageLanguage acquisitionSpeech processingMore salientSpeechSame languageFaceNovel trialMonths of ageAttentionLanguageDiscriminationAuditoryActressNovel ones
2020
Highly proficient L2 speakers still need to attend to a talker’s mouth when processing L2 speech
Birulés J, Bosch L, Pons F, Lewkowicz D. Highly proficient L2 speakers still need to attend to a talker’s mouth when processing L2 speech. Language Cognition And Neuroscience 2020, 35: 1314-1325. DOI: 10.1080/23273798.2020.1762905.Peer-Reviewed Original ResearchL2 speakersTalker's mouthNative speakersSecond language speechNon-native languageNon-native speakersProficient L2 speakersL2 speechLanguage proficiencyNative speechTalker's eyesSpeakersTalker's faceSuch attentionExperiment 1Experiment 2SpeechLanguageSpanishProficiencyAttentionTalkersProcessing situationsFaceParticipants
2018
Learning of hierarchical serial patterns emerges in infancy
Lewkowicz D, Schmuckler M, Mangalindan D. Learning of hierarchical serial patterns emerges in infancy. Developmental Psychobiology 2018, 60: 243-255. PMID: 29457647, DOI: 10.1002/dev.21614.Peer-Reviewed Original Research
2017
Overcoming the other‐race effect in infancy with multisensory redundancy: 10–12‐month‐olds discriminate dynamic other‐race faces producing speech
Minar N, Lewkowicz D. Overcoming the other‐race effect in infancy with multisensory redundancy: 10–12‐month‐olds discriminate dynamic other‐race faces producing speech. Developmental Science 2017, 21: e12604. PMID: 28944541, DOI: 10.1111/desc.12604.Peer-Reviewed Original ResearchAudio-Visual Perception of Gender by Infants Emerges Earlier for Adult-Directed Speech
Richoz A, Quinn P, de Boisferon A, Berger C, Loevenbruck H, Lewkowicz D, Lee K, Dole M, Caldara R, Pascalis O. Audio-Visual Perception of Gender by Infants Emerges Earlier for Adult-Directed Speech. PLOS ONE 2017, 12: e0169325. PMID: 28060872, PMCID: PMC5218491, DOI: 10.1371/journal.pone.0169325.Peer-Reviewed Original ResearchConceptsAdult-directed speechAbility of infantsMultisensory abilitiesAudiovisual speechMultisensory perceptionPerceptual experienceVisual perceptionMale facesVisual categorizationSpeech mannersSocial interactionGender informationPerceive genderSpeechMale voiceCurrent studyPerceptionAdultsFaceGenderEmotionsAbilityVoiceFindingsInfants
2016
Selective attention to a talker's mouth in infancy: role of audiovisual temporal synchrony and linguistic experience
de Boisferon A, Tift A, Minar N, Lewkowicz D. Selective attention to a talker's mouth in infancy: role of audiovisual temporal synchrony and linguistic experience. Developmental Science 2016, 20 PMID: 26743437, PMCID: PMC6340138, DOI: 10.1111/desc.12381.Peer-Reviewed Original ResearchConceptsAudio-visual synchronyTalker's mouthSelective attentionLinguistic experienceAudiovisual temporal synchronyAttentional focusBabbling phaseLanguage expertiseFluent speechEye gazeTemporal synchronySynchronized speechRelative attentionSpeechSynchronyMonths of ageAttentionTalkersLanguageExperienceGazeDesynchronizationInfantsUsual patternPrevious studies
2015
Language familiarity modulates relative attention to the eyes and mouth of a talker
Barenholtz E, Mavica L, Lewkowicz D. Language familiarity modulates relative attention to the eyes and mouth of a talker. Cognition 2015, 147: 100-105. PMID: 26649759, PMCID: PMC6367725, DOI: 10.1016/j.cognition.2015.11.013.Peer-Reviewed Original ResearchConceptsAudiovisual speech cuesUnfamiliar languageLanguage familiarityFamiliar languageSpeech cuesBilingual subjectsLanguage conditionsMonolingual subjectsTalker's mouthAttentional strategiesSpeech processingLanguageRelative attentionTalkersTaskCuesFamiliarityAttentionAdultsSpeechFindingsParticipantsGreat attentionSubjectsProcessingBilingualism Modulates Infants’ Selective Attention to the Mouth of a Talking Face
Pons F, Bosch L, Lewkowicz D. Bilingualism Modulates Infants’ Selective Attention to the Mouth of a Talking Face. Psychological Science 2015, 26: 490-498. PMID: 25767208, PMCID: PMC4398611, DOI: 10.1177/0956797614568320.Peer-Reviewed Original ResearchConceptsBilingual infantsNonnative speechSelective attentionSpeech cuesAudiovisual speech cuesGreater perceptual salienceMonolingual infantsAudiovisual speechPerceptual salienceTalking faceBilingual inputBilingual environmentSocial interactionInfant's needsSpeechCuesPattern of responseAcquisition processAdaptive processLanguageAttentionEarly ageMonolingualsBilingualsFace
2014
Perception of the multisensory coherence of fluent audiovisual speech in infancy: Its emergence and the role of experience
Lewkowicz D, Minar N, Tift A, Brandon M. Perception of the multisensory coherence of fluent audiovisual speech in infancy: Its emergence and the role of experience. Journal Of Experimental Child Psychology 2014, 130: 147-162. PMID: 25462038, PMCID: PMC4258456, DOI: 10.1016/j.jecp.2014.10.006.Peer-Reviewed Original ResearchConceptsMultisensory coherenceAudiovisual speechSpeech streamNon-native speechRole of experienceLearning infantsPerceptual expertisePerceptual narrowingAudiovisual synchronyFemale facesFluent speechVisible articulationDevelopmental emergenceTest trialsNative languageSpeechCurrent findingsPerceptionMonologueSynchronyFaceInfancyCuesCoherenceSkillsInfant perception of audio-visual speech synchrony in familiar and unfamiliar fluent speech
Pons F, Lewkowicz D. Infant perception of audio-visual speech synchrony in familiar and unfamiliar fluent speech. Acta Psychologica 2014, 149: 142-147. PMID: 24576508, DOI: 10.1016/j.actpsy.2013.12.013.Peer-Reviewed Original ResearchConceptsFluent speechLinguistic experienceLanguage familiarity effectSpecific linguistic experienceAudio-visual synchronyVideo clipsLanguage familiarityLinguistic inputAudiovisual syllablesInfants' perceptionPerceptual tuningFamiliarity effectMonolingual SpanishExperiment 1Experiment 2Infants' responsesSpanish infantsInfant studiesSpeechSame videoCatalanSpanishSynchronous videoTemporal relationsAudio stream
2013
Recognition of amodal language identity emerges in infancy
Lewkowicz D, Pons F. Recognition of amodal language identity emerges in infancy. International Journal Of Behavioral Development 2013, 37: 90-94. PMID: 24648601, PMCID: PMC3956126, DOI: 10.1177/0165025412467582.Peer-Reviewed Original ResearchLanguage identityNative languageInfants' native languageVisual linguistic informationAudiovisual speechPerceptual skillsHigher order AArticulatory informationIntegration skillsSpeech processingLinguistic informationMultisensory communicationIdentityLanguageSkillsSpeechMonths of ageInvariant patternRecognitionRelationInfantsCommunicationProcessingInfancyResearchHow self-generated experience contributes to the development of speech and language in human infants?
Lewkowicz D. How self-generated experience contributes to the development of speech and language in human infants? Multisensory Research 2013, 26: 56-56. DOI: 10.1163/22134808-000s0035.Peer-Reviewed Original Research
2012
Perception of audio-visual speech synchrony in Spanish-speaking children with and without specific language impairment*
PONS F, ANDREU L, SANZ-TORRENT M, BUIL-LEGAZ L, LEWKOWICZ D. Perception of audio-visual speech synchrony in Spanish-speaking children with and without specific language impairment*. Journal Of Child Language 2012, 40: 687-700. PMID: 22874648, PMCID: PMC3954717, DOI: 10.1017/s0305000912000189.Peer-Reviewed Original ResearchConceptsSpecific language impairmentSpanish-speaking childrenSpeech perceptionAudiovisual asynchronyLanguage impairmentAuditory speech perceptionVisual articulatory informationTypical language developmentEye-tracking studyVisual speechAuditory componentArticulatory informationLanguage developmentTemporal synchronySpeech attributesVisual componentsDifficulty of speechPerceptionAsynchronyVisual aspectsSpeechChildrenSynchronySpanishImpairmentInfants deploy selective attention to the mouth of a talking face when learning speech
Lewkowicz D, Hansen-Tift A. Infants deploy selective attention to the mouth of a talking face when learning speech. Proceedings Of The National Academy Of Sciences Of The United States Of America 2012, 109: 1431-1436. PMID: 22307596, PMCID: PMC3277111, DOI: 10.1073/pnas.1114783109.Peer-Reviewed Original ResearchConceptsNonnative speechEye gazeAdult's eye gazeAudiovisual speech cuesSpeech production abilitiesNonnative languageAudiovisual attentionPerceptual narrowingSpeech formsSelective attentionSpeech cuesAudiovisual cuesSocial cuesHuman infancySpeechCuesCurrent findingsLanguageEarly experienceSecond shiftAttentionEnglishMonologueRecitingGazeInfant perception of audiovisual synchrony in fluent speech
Pons F, Lewkowicz D. Infant perception of audiovisual synchrony in fluent speech. Multisensory Research 2012, 25: 36-36. DOI: 10.1163/187847612x646587.Peer-Reviewed Original ResearchFluent speechInfants' responsesSeparate test trialsTypes of stimuliNon-speech eventsTemporal relationsPerceptual narrowingAudiovisual syllablesInfants' perceptionAudiovisual synchronyLinguistic experienceTemporal processingLanguage effectsSpanish learningTest trialsLinguistic backgroundsSynchrony detectionInfant studiesSpeechVideo clipsAsynchronySyllablesExtant studiesPerceptionMonths of age
2009
Narrowing of intersensory speech perception in infancy
Pons F, Lewkowicz D, Soto-Faraco S, Sebastián-Gallés N. Narrowing of intersensory speech perception in infancy. Proceedings Of The National Academy Of Sciences Of The United States Of America 2009, 106: 10598-10602. PMID: 19541648, PMCID: PMC2705579, DOI: 10.1073/pnas.0904134106.Peer-Reviewed Original ResearchConceptsPerceptual narrowingNon-native phonetic contrastsNon-native languageMultisensory speechPerceptual inputPhonetic contrastsSpeech perceptionPerceptual systemAudiovisual correspondencesCognitive developmentLanguage domainsPhonological systemInfants' responsesMonths of ageDevelopmental processesAcquisitionConventional viewLanguageSpeechPerceptionMusicIncremental processFindingsStriking findingVocalizations
2000
Infants' Perception of the Audible, Visible, and Bimodal Attributes of Multimodal Syllables
Lewkowicz D. Infants' Perception of the Audible, Visible, and Bimodal Attributes of Multimodal Syllables. Child Development 2000, 71: 1241-1257. PMID: 11108094, DOI: 10.1111/1467-8624.00226.Peer-Reviewed Original ResearchConceptsInfants' perceptionAdult-directed mannerAudiovisual synchronyFeatural informationMultimodal speechNovel personSyllablesMonths infantsNovel syllablesPerceptionSame personAge groupsAttribute changesImportant dimensionTypes of changesPersonsDetection of changesSpeechAsynchronyEarly developmentHabituationInfantsAttributesSynchrony
1998
Infants' response to the audible and visible properties of the human face: II. Discrimination of differences between singing and adult‐directed speech
Lewkowicz D. Infants' response to the audible and visible properties of the human face: II. Discrimination of differences between singing and adult‐directed speech. Developmental Psychobiology 1998, 32: 261-274. PMID: 9589215, DOI: 10.1002/(sici)1098-2302(199805)32:4<261::aid-dev1>3.0.co;2-l.Peer-Reviewed Original ResearchMeSH KeywordsAcoustic StimulationAge FactorsAttentionChild DevelopmentDiscrimination, PsychologicalFaceFemaleFixation, OcularHabituation, PsychophysiologicHumansInfantInfant BehaviorMaleMultivariate AnalysisMusicPattern Recognition, VisualPhotic StimulationSex FactorsSingle-Blind MethodSpeech PerceptionTime FactorsVoiceConceptsAdult-directed mannerAdult-directed speechHuman faceSeparate test trialsDiscrimination of differencesInfant responsivenessTest trialsInfants' responsesMonths of agePrepared scriptAudible featuresVocal characteristicsVisible propertiesGender differencesSpeechSingingTypes of changesFacePersonsBimodal changeAge groupsVisible featuresInfantsMale personsBimodal feature
1996
Infants' Response to the Audible and Visible Properties of the Human Face: 1. Role of Lexical–Syntactic Content, Temporal Synchrony, Gender, and Manner of Speech
Lewkowicz D. Infants' Response to the Audible and Visible Properties of the Human Face: 1. Role of Lexical–Syntactic Content, Temporal Synchrony, Gender, and Manner of Speech. Developmental Psychology 1996, 32: 347-366. DOI: 10.1037/0012-1649.32.2.347.Peer-Reviewed Original ResearchHuman faceManner of speechInfants' perceptionProsody cuesSynchrony relationsTemporal synchronyInfants' responsesMultimodal representationsSpeaker genderPrepared scriptAudible featuresMultimodal featuresVisible propertiesOlder groupSpeechPerceptionFaceMonths of ageTypes of changesVisible representationGenderCuesRepresentationInfantsSynchrony