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Metacognition and Causal Inference in Audiovisual Speech
Faith Kimmet1, Samantha Pedersen1, Victoria Cardenas1
1Department of Psychology, University of Florida, Gainesville, FL 32603, USA.
Multisensory Research
|April 20, 2023
Summary
Metacognition struggles to differentiate audiovisual signals, with confidence ratings similar across congruent, McGurk, and rarely integrated speech. Confidence only distinguished congruent from McGurk when perceived syllables matched.
Area of Science:
- Cognitive Neuroscience
- Psychology
- Auditory Perception
Background:
- The brain integrates multisensory (audiovisual) signals using causal inference, influenced by temporal, spatial, and semantic cues.
- Limited understanding exists regarding metacognition and multisensory integration, particularly confidence in audiovisual perception.
Purpose of the Study:
- To investigate the relationship between metacognition and multisensory causal inference.
- To determine if confidence ratings differ for congruent, McGurk, and rarely integrated speech.
- To assess if confidence judgments can distinguish these scenarios when perceived syllables are identical.
Main Methods:
- 92 online participants completed audiovisual speech perception tasks.
- Participants reported perceived syllables and rated their confidence on each trial.
- Experiments manipulated stimulus conditions (congruent, McGurk, rarely integrated) and matched perceived syllables.
Main Results:
- Confidence ratings were similar across congruent, McGurk, and rarely integrated speech conditions.
- When perceived syllables matched, confidence was higher for congruent stimuli than McGurk stimuli.
- When perceived syllables matched, confidence judgments were similar for McGurk and rarely integrated stimuli.
Conclusions:
- Metacognition shows limitations in distinguishing between different sources of multisensory information.
- Confidence judgments are not always reliable indicators of the underlying audiovisual integration process.
- Further research is needed to understand the nuances of perceptual confidence in complex multisensory environments.
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