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Infant Smiling Dynamics And Perceived Positive Emotion D. Messinger, T. Cassel, Z. Ambadar , & J. Cohn Facial Expression as a Window on Perceptual-Cognitive Processing, Hedonics, & Affective Communication in Infants July, 2008. The 12th European Conference On Facial Expression

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The 12th european conference on facial expression university of geneva switzerland l.jpg

Infant Smiling Dynamics And Perceived Positive EmotionD. Messinger, T. Cassel, Z. Ambadar, & J. CohnFacial Expression as a Window on Perceptual-CognitiveProcessing, Hedonics, & Affective Communication in InfantsJuly, 2008

The 12th European Conference On Facial Expression

University of Geneva, Switzerland


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What Infant Smiles Tell Us About Positive Emotion: An Automated Approach

  • How do infants smile?

    • Smile strength (AU12)

    • Cheek Raise / Eye Constriction (AU6)

    • Lip Parting - Mouth Opening (AUs 25/26/27)

  • How are actions associated in time?

  • Do they predict rated positive emotion?

  • Not Yes/No,

  • but how much?


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Smile Strength

Mouth Opening

Automated Measurement

Now:

Feature Point Tracking

AFA3

Later Today:

Other

Approaches

Other

Topics

AFA4 + …


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Reliability Correlations: Manual FACS & Automated AFA3



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Manual/Ordinal FACS PerspectiveSome Ebb And Flow In These Smiles


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Continuous/Automated Perspective:

Ebb And Flow In These Smiles

psy.miami.edu/faculty/dmessinger/


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Actions Associated In Time

AU6 (Manual)

.68

.58

Smile Strength

Auto/Manual

Mouth Opening

Auto/Manual

.21/.51



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Vertical bars are the standard deviations of the parent sample.

Students & parents rate images similarly

psy.miami.edu/faculty/dmessinger/




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Automated Measurements Positive Ratings of Images

Positive Feeling

Automated: Mean of Smile Strength

& Mouth Opening


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Figure 1. Screenshot of Continuous Rating Software

Switch to mouse control

Menu

Scaling Bar

Picture

Frame

Rating Cursor

Emotion Ratings Of Non-expert Observers

  • Positive

  • Emotional

  • Valence

  • Ratings

psy.miami.edu/faculty/dmessinger/



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Emotion as a Continuous Process

  • Infant interactive smiles can be lengthy

  • They involve the movement of actions linked in time

    • Smile strength, AU6, Mouth Opening

  • All actions predict rated positive emotion (univariate)

    • Smile strength and mouth opening predict independently

  • Infant positive emotion is a multipeaked process with several linked indices


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Issues for later today

  • Measurement

  • Interaction



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BabyFACS Matrix (3 + None)


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BabyFACS Matrix

psy.miami.edu/faculty/dmessinger/