How do infants smile?

How do infants smile?

• 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?

Infant interactive smiles can be lengthy

• 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

Measurement

• Measurement