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Dondi, Marco; Messinger, Daniel; Colle, Marta; Tabasso, Alessia; Simion, Francesca; Barba, Beatrice Dalla; Fogel, Alan – Infancy, 2007
To better understand the form and recognizability of neonatal smiling, 32 newborns (14 girls; M = 25.6 hr) were videorecorded in the behavioral states of alertness, drowsiness, active sleep, and quiet sleep. Baby Facial Action Coding System coding of both lip corner raising (simple or non-Duchenne) and lip corner raising with cheek raising…
Descriptors: Eye Movements, Sleep, Neonates, Infant Behavior
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Longo, Matthew R.; Bertenthal, Bennett I. – Infancy, 2006
Do 9-month-old infants motorically simulate actions they perceive others perform? Two experiments tested whether action observation, like overt reaching, is sufficient to elicit the Piagetian A-not-B error. Infants recovered a toy hidden at location A or observed an experimenter recover the toy. After the toy was hidden at location B, infants in…
Descriptors: Observation, Error Patterns, Infants, Toys
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Duffy, Sean; Huttenlocher, Janellen; Levine, Susan; Duffy, Renee – Infancy, 2005
This study explores how infants encode an object's spatial extent. We habituated 6.5-month-old infants to a dowel inside a container and then tested whether they dishabituate to a change in absolute size when the relation between dowel and container is held constant (by altering the size of both container and dowel) and when the relation changes…
Descriptors: Infants, Habituation, Coding, Cues