Related Experiment Video
Updated: Dec 8, 2025
06:07
Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
Published on: May 15, 2019
8.8K
Visual Sonority Modulates Infants' Attraction to Sign Language
Adam Stone1, Laura-Ann Petitto2,3,4, Rain Bosworth1
1Department of Psychology, University of California, San Diego, La Jolla, CA.
Summary
Infants
Area of Science:
- Developmental psychology
- Linguistics
- Cognitive neuroscience
Background:
- The infant brain may be predisposed to identify perceptually salient cues common to both signed and spoken languages.
- Sonority has been proposed as a potential language acquisition cue in spoken language acquisition.
- Understanding early language acquisition universals across modalities is crucial.
Purpose of the Study:
- To investigate infant sensitivity to sonority cues in visual language (fingerspelling).
- To explore developmental changes in this sensitivity between 6 and 12 months of age.
- To determine if sonority-based perception is a modality-independent feature of early language learning.
Main Methods:
- Utilized a preferential looking paradigm with an infrared eye tracker.
- Exposed hearing infants (6- and 12-month-olds) with no sign language experience to fingerspelling stimuli.
- Stimuli varied in sonority values (high/well-formed vs. low/ill-formed), relevant to syllabic structure.
Main Results:
- 6-month-olds showed a significant looking preference for high sonority (well-formed) fingerspelling.
- 12-month-olds did not show a significant preference between high and low sonority fingerspelling.
- Infants demonstrated a strong preference in a control condition, indicating attentional capacity.
Conclusions:
- Infants possess an innate sensitivity to sonority-based contrastive cues in language structure.
- This sensitivity undergoes perceptual narrowing, becoming less pronounced by 12 months.
- Findings suggest modality-independent universals in early language acquisition, highlighting core linguistic principles.
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