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Direct linkLewkowicz, David J.; Pons, Ferran – International Journal of Behavioral Development, 2013
Audiovisual speech consists of overlapping and invariant patterns of dynamic acoustic and optic articulatory information. Research has shown that infants can perceive a variety of basic auditory-visual (A-V) relations but no studies have investigated whether and when infants begin to perceive higher order A-V relations inherent in speech. Here, we…
Descriptors: Infants, Visual Perception, Auditory Perception, Speech Communication
Lewkowicz, David J.; Leo, Irene; Simion, Francesca – Infancy, 2010
Previous studies have shown that infants, including newborns, can match previously unseen and unheard human faces and vocalizations. More recently, it has been reported that infants as young as 4 months of age also can match the faces and vocalizations of other species raising the possibility that such broad multisensory perceptual tuning is…
Descriptors: Neonates, Nonverbal Communication, Visual Stimuli, Visual Perception
Lewkowicz, David J. – Child Development, 2008
This study investigated perception of audiovisual sequences in 3- and 4-month-old infants. Infants were habituated to sequences consisting of moving/sounding or looming/sounding objects and then tested for their ability to detect changes in the order of the objects, sounds, or both. Results showed that 3-month-olds perceived the order of 3-element…
Descriptors: Cues, Infants, Child Development, Perceptual Development
Peer reviewedLewkowicz, David J. – Developmental Psychology, 1994
Examined rate-based intersensory matching in infants by habituating them to concordant or discordant auditory-visual stimuli. Found a preference for the visual stimulus that moved at a novel velocity, indicating that the temporal attributes of the visual component dominated responsiveness. Found only limited evidence of intersensory matching. (WP)
Descriptors: Auditory Perception, Auditory Stimuli, Infants, Perceptual Development
Lewkowicz, David J. – Developmental Science, 2004
Serial order is fundamental to perception, cognition and behavioral action. Three experiments investigated infants' perception, learning and discrimination of serial order. Four- and 8-month-old infants were habituated to three sequentially moving objects making visible and audible impacts and then were tested on separate test trials for their…
Descriptors: Infants, Serial Ordering, Schemata (Cognition), Habituation
Peer reviewedLewkowicz, David J. – Developmental Psychology, 2003
Three experiments examined 4- to 10-month-olds' perception of audio-visual (A-V) temporal synchrony cues in the presence or absence of rhythmic pattern cues. Results established that infants of all ages could discriminate between two different audio-visual rhythmic events. Only 10-month-olds detected a desynchronization of the auditory and visual…
Descriptors: Age Differences, Attention, Cross Sectional Studies, Cues
