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Related Concept Videos

Piaget's Stage 1 of Cognitive Development01:14

Piaget's Stage 1 of Cognitive Development

The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
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Related Experiment Video

Updated: Jun 10, 2026

Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
06:07

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Published on: May 15, 2019

Visual information and object size in infant reaching.

Neil E Berthier1, Renee L Carrico

  • 1University of Massachusetts Amherst, Saint Michael's College, MA, USA. berthier@psych.umass.edu

Infant Behavior & Development
|August 17, 2010
PubMed
Summary
This summary is machine-generated.

Infants use vision to guide their reaching. By 6 months, they rely on vision for corrections, and by 1 year, they reach faster with visual feedback.

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Area of Science:

  • Developmental psychology
  • Motor control
  • Infant research

Background:

  • The role of vision in infant reaching is debated.
  • Previous studies found no effect of visual feedback on reaching in infants under 6 months.

Purpose of the Study:

  • To investigate how infants use visual feedback for reaching.
  • To determine the age at which visual guidance of reaching emerges.
  • To examine the development of reach and grasp planning based on object properties.

Main Methods:

  • Tested 6-, 9-, and 12-month-old infants reaching for objects.
  • Compared reaching performance in light (with vision) and dark (without vision).
  • Analyzed reaching speed, movement time, and effects of target object size.

Main Results:

  • Infants reached faster in the dark at 6 months, but faster in the light at 1 year.
  • Movement times showed parallel changes to reaching speed.
  • Object size influenced reaching speed consistently at 12 months.

Conclusions:

  • Vision becomes important for guiding reaching around 6 months of age.
  • Reach and grasp planning differentiate based on object size by 9-12 months.
  • Younger infants primarily use proprioception and target vision for reach correction.