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Handedness for grasping objects and declarative pointing: A longitudinal study by Anne-Yvonne Jacquet; Rana Esseily; Delphine Rider; Jacqueline Fagard is a Psychology article available to read on EtoBox.
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## Abstract It is still unclear whether infants become right‐handed because of their left‐hemisphere specialization for language (through gestural communication for instance), whether they speak predominantly with their left hemisphere because of this hemisphere's superiority in controlling sequential actions which first results in right‐handedness, or whether the two lateralization processes develop independently. To tackle this question, we followed 26 human infants from 8 to 20 months to evaluate the temporal relationship between the emergence of hand preference for grasping objects and for declarative pointing (communicative gesture). Our results show that when grasping and pointing are compared in similar conditions, with objects presented in several spatial positions, the tendency to use the right hand is significantly larger for pointing than for grasping, and both hand preferences are loosely correlated. This suggests that, at least at the age studied here, hand preferences for grasping and for declarative pointing develop relatively independently. © 2011 Wiley Periodicals, Inc. Dev Psychobiol 54:36–46, 2012.
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- Author
- Anne-Yvonne Jacquet; Rana Esseily; Delphine Rider; Jacqueline Fagard
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0012-1630)
- Published
- 2011
- Language
- EN
- Field
- Psychology (Social Sciences)