Happiness measure, code: A-CA-mi-rc-th%-101-b

% time smiling
Infants observed in laboratory situations:
a: 2 minute interacting with mother in face-to-face situation
Mother talks and touches, no toys used
- Mother turns her back to the infant during 15 seconds
b: 2 minutes no interaction; mother seated in front of the infant but does not look at it

Infants facial expressions of joy, in particular smiling, assessed from video registration.
Focus, A-CA Affect: Cheerful Appearance
Time frame, mi last instant
Mode, rc rating by clinican
Scale type, th% time happy percent Range = 101
Used in studies