Reaching and grasping a moving object in 6-, 8-, and 10-month-old infants: Laterality and performance
2009 (English)In: Infant Behavior and Development, ISSN 0163-6383, E-ISSN 1934-8800, Vol. 32, no 2, 137-146 p.Article in journal (Refereed) Published
The goal of this study was to investigate some of the visuo-motor factors underlying an infant's developing ability to grasp a laterally-moving object. In particular, hand preference, midline crossing, and visual-field asymmetry were investigated by comparing performance as a function of the object's direction of motion. We presented 6-, 8-, and 10-month-old infants with a graspable object, moving in a circular trajectory in the horizontal plane. Six-month-old infants reached for the object with the ipsilateral hand and grasped it with the contralateral hand. Eight-month-old infants showed a strong right-hand bias for both reaching and grasping. Ten-month-old infants showed a greater diversity of strategy use including bimanual and successful ipsilateral grasping following ipsilateral reaching in both directions of motion. Thus, motor constraints due to spatial compatibility, hand preference and bimanual coordination (but not midline crossing) must be taken into account to understand age differences in grasping a moving object.
Place, publisher, year, edition, pages
2009. Vol. 32, no 2, 137-146 p.
Grasping, Handedness, Infants, Moving objects, Reaching, Visual field
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:uu:diva-120975DOI: 10.1016/j.infbeh.2008.12.002ISI: 000265305700001PubMedID: 19185922OAI: oai:DiVA.org:uu-120975DiVA: diva2:304220