Motor training at 3 months affects object exploration 12 months later.

Area of Science:

• Developmental Psychology
• Motor Development
• Infant Cognition

Background:

• Motor skill acquisition is theorized to trigger developmental changes.
• Previous evidence linking motor skills to development has been correlational.
• The impact of early motor experiences on later development requires experimental investigation.

Purpose of the Study:

• To experimentally test the causal link between early reaching experience and later object engagement.
• To investigate the long-term effects of motor skill development in infancy.
• To examine how active versus passive reaching experiences influence infant development.

Main Methods:

• Forty 3-month-old infants with no self-initiated reaching skills participated.
• Infants were assigned to active reaching, passive reaching, or untrained control conditions.
• Object engagement was assessed longitudinally at 12 months of age.

Main Results:

• Infants with active reaching experience at 3 months showed enhanced object exploration and attention at 15 months.
• Compared to untrained or passively trained infants, active reaching led to improved skills.
• Grasping activity post-training, not pre-training, predicted later object exploration.

Conclusions:

• Early active reaching experiences have demonstrable long-term effects on infant development.
• Motor skills initiate cascading developmental effects, influencing object interaction and attention.
• This study provides experimental evidence for the role of motor development in shaping cognitive and interactive skills.