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- Title
- The role of voice and motion in the developmental shift in infant attention to the mouth of a talking face.
- Creator
- Tift, Amy H., Minar, Nicholas J., Lewkowicz, David J., Graduate College
- Date Issued
- 2013-04-12
- PURL
- http://purl.flvc.org/fcla/dt/3361365
- Subject Headings
- Infants, Attention
- Format
- Document (PDF)
- Title
- The effect of face-voice synchrony on infant allocation of visual attention.
- Creator
- Minar, Nicholas J., Hansen, Amy, Lewkowicz, David J., Graduate College
- Date Issued
- 2011-04-08
- PURL
- http://purl.flvc.org/fcla/dt/3165808
- Subject Headings
- Speech perception, Language acquisition, Prosodic analysis (Linguistics)
- Format
- Document (PDF)
- Title
- Mouth Motion and Growing Interest in Speech Drives the Developmental Shift in Infant Attention to the Mouth of a Talking Face.
- Creator
- Tift, Amy H., Minar, Nicholas J., Lewkowicz, David J., Graduate College
- Abstract/Description
-
Lewkowicz & Hansen-Tift found that when 4-month-old infants see and hear a person talking, they look more at her eyes but that 8- and 10-mo infants look more at her mouth. The developmental attentional shift to the mouth reflects infants’ growing interest in speech. Attention to the mouth enables infants to gain access to redundant and maximally salient audiovisual cues which then facilitate speech and language acquisition. We investigated the separate role of mouth movement and vocalization...
Show moreLewkowicz & Hansen-Tift found that when 4-month-old infants see and hear a person talking, they look more at her eyes but that 8- and 10-mo infants look more at her mouth. The developmental attentional shift to the mouth reflects infants’ growing interest in speech. Attention to the mouth enables infants to gain access to redundant and maximally salient audiovisual cues which then facilitate speech and language acquisition. We investigated the separate role of mouth movement and vocalization cues in the attentional shift from a talker’s eyes to the talker’s mouth. In 3 experiments, we used an eye-tracker to measure the proportion of attention infants, 4-, 8-, and 10-mo, allocate to the eyes and mouth of a static/silent face, a static/talking face, and a silently talking face. We found that when infants see a static person, they attend to the eyes. Lewkowicz & Hansen-Tift found that when infants see and hear a person talking, 4-mos look at the eyes whereas 8- and 10-mos look at the mouth. When infants see a silently talking person, only 10-mos look at the mouth. These findings demonstrate that the shift from the eyes to the mouth is mediated by three factors: dynamic visual speech cues, an emerging interest in speech, and the redundancy of audiovisual speech. Thus, younger infants are not interested in speech so they focus on the eyes, whereas older infants become interested in speech, shifting their focus to the mouth, but initially at 8 m, this shift requires that speech be multisensory.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00005857
- Format
- Document (PDF)
- Title
- Look at my mouth when I’m talking: developmental shift in infant attention away from the eyes to the mouth of a talking face.
- Creator
- Hansen, Amy, Lewkowicz, David J., Minar, Nicholas J., Graduate College
- Date Issued
- 2011-04-08
- PURL
- http://purl.flvc.org/fcla/dt/3164539
- Subject Headings
- Body language, Infant psychology, Nonverbal communication in infants
- Format
- Document (PDF)
- Title
- Is Infant Learning of Non-Adjacent Sequential Relations a Domain-General Ability and When Does It Emerge?.
- Creator
- Minar, Nicholas J., Lewkowicz, David J., Graduate College
- Abstract/Description
-
Non-adjacent statistical relations are an important class of sequential structure because they aid in the acquisition of syntax and, thus, language. Previous work has demonstrated that 15-month-old infants are sensitive to distant sequential relations but that these types of relations are difficult to learn. Importantly, it is not known whether the ability to learn non-adjacent statistical relations is based on a domain-specific or domain-general pattern-learning mechanism. We examined the...
Show moreNon-adjacent statistical relations are an important class of sequential structure because they aid in the acquisition of syntax and, thus, language. Previous work has demonstrated that 15-month-old infants are sensitive to distant sequential relations but that these types of relations are difficult to learn. Importantly, it is not known whether the ability to learn non-adjacent statistical relations is based on a domain-specific or domain-general pattern-learning mechanism. We examined the domain-generality of this ability in separate groups of 10- and 12-month-old infants in two experiments utilizing the habituation/test procedure.
Experiment 1 habituated infants to sequences of five moving/sounding arbitrary shapes and sounds. The sequences contained two target elements that were always separated by a non-target element. Results indicated that neither age group displayed response recovery when the target elements were switched. Experiment 2 simplified the task by using sequences that were three elements in length e.g., ABC and DBE. During the test trials, the last element from the two unique pairings was again switched e.g., ABE and DBC. Results indicated that only the 12-month-olds detected a change in the sequence [t 48 1.76, p 0.05].
These results indicate that infants’ sensitivity to multisensory non-adjacent statistical dependencies is limited to simple 3 element sequences rather than complex 5 element sequences. Our findings also indicate that infants as young as 12 months of age can learn non-adjacent sequential relations embedded within arbitrary audiovisual sequences, suggesting that this critical ability is domain-general in nature.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00005159
- Format
- Document (PDF)