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Direct linkD'Souza, Hana; Cowie, Dorothy; Karmiloff-Smith, Annette; Bremner, Andrew J. – Developmental Science, 2017
In executing purposeful actions, adults select sufficient and necessary limbs. But infants often move goal-irrelevant limbs, suggesting a developmental process of motor specialization. Two experiments with 9- and 12-month-olds revealed gradual decreases in extraneous movements in non-acting limbs during unimanual actions. In Experiment 1,…
Descriptors: Infants, Motor Reactions, Child Development, Individual Differences
Santos, Laurie R. – Developmental Science, 2004
Human toddlers demonstrate striking failures when searching for hidden objects that interact with other objects, yet successfully locate hidden objects that do not undergo mechanical interactions. This pattern hints at a developmental dissociation between contact-mechanical and spatiotemporal knowledge. Recent studies suggest that adult non-human…
Descriptors: Toddlers, Primatology, Adults, Models
