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de Campos, Ana Carolina; da Costa, Carolina Souza Neves; Savelsbergh, Geert J. P.; Rocha, Nelci Adriana Cicuto Ferreira – Research in Developmental Disabilities: A Multidisciplinary Journal, 2013
During infant development, objects and their functions are learned by means of active exploration. Factors that may influence exploration include reaching and grasping ability, object properties and the presence of developmental disorders. We assessed the development of exploratory actions in 16 typically-developing (TD) infants and 9 infants with…
Descriptors: Infants, Down Syndrome, Interaction, Child Development
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de Campos, Ana Carolina; Rocha, Nelci Adriana Cicuto Ferreira; Savelsbergh, Geert J. P. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2010
Reaching and grasping skills have been described to emerge from a dynamic interaction between intrinsic and extrinsic factors. The aims of the study were to investigate the effect of such intrinsic factors as age and Down syndrome on the development of reaching and grasping skills and on overall gross motor skill, and to test the influence of the…
Descriptors: Down Syndrome, Physics, Infants, Psychomotor Skills
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van Hof, Paulion; van der Kamp, John; Savelsbergh, Geert J. P. – Developmental Psychology, 2008
The authors studied how infants come to perceive and act adaptively by presenting 35 three- to nine-month-olds with balls that approached at various speeds according to a staircase procedure. They determined whether infants attempted to reach for the ball and whether they were successful (i.e., contacted the ball). In addition, the time and…
Descriptors: Infants, Visual Perception, Psychomotor Skills, Age Differences