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Related Experiment Video

Updated: Mar 27, 2026

A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants

A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants

Published on: October 4, 2015

Manipulation complexity in infants.

Kaityn Contino¹, Eliza L Nelson²

¹Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, Massachusetts, USA.

Infant and Child Development

|March 25, 2026

Summary

This summary is machine-generated.

Infant object manipulation skills develop cumulatively. Infants master simpler actions before progressing to more complex fine motor skills, establishing a developmental hierarchy for early learning.

Keywords:

Fine Motor Skills Guttman Infants Manipulation Object Exploration

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Published on: April 19, 2017

Area of Science:

Developmental Psychology
Motor Skill Acquisition
Infant Cognition

Background:

Object exploration is crucial for infant learning and development.
Fine-grained differences in how infants interact with objects define manipulation complexity (MC).

Purpose of the Study:

To examine the developmental progression of manipulation complexity (MC) in infants.
To establish a hierarchical framework for infant fine motor skills.

Main Methods:

Assessed manipulation complexity (MC) in 90 typically developing infants aged 9-14 months.
Utilized a battery of eight objects and Guttman analyses to determine skill hierarchy.

Main Results:

Manipulation complexity (MC) was found to be cumulative, with simpler skills preceding complex ones.
Established a developmental order: bimanual manipulation, distinct hand roles, object deconstruction, and independent digit movement.

Conclusions:

Introduced a novel framework for describing fine motor skill development in infants.
Demonstrated a predictable, cumulative hierarchy in infant object manipulation skills.