Happiness and Joy Chapter-Handbook of Emotional Development

Happiness and joy involve feelings of positive engagement which are prototypically expressed through the face, voice, and body. Joyful smiles tend to be strong and involve both eye constriction (the Duchenne marker) and mouth opening. Through approximately 2 months of age, joyful expressions are primarily rooted in physiological arousal. Read more “Happiness and Joy Chapter-Handbook of Emotional Development” →