Unformatted text preview: but especially interested in people and faces. Relatively indiscriminate at first but more so over time. Smile more when reinforced by mother – special smile for mother (Duchenne Smile) • not all babies smile with equal frequency; individual, cultural, and sex differences exist • wide array of stimuli can make baby laugh (and what makes children laugh changes as they develop) • 18 th month old – social smiling occurs more frequent toward humans than nonhuman objects • end of 2 nd year: o use smiling purposefully o show sensitivity to emotional expressions of others • 3-5 year olds: o laughing becomes social event, which occurs in presence of other 95% of the time...
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- Fall '08
- Developmental Psychology, Laughter, Duchenne smile, special smile, emotion expressions