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Related Experiment Video

Updated: May 1, 2026

Author Spotlight: Deciphering the Cognitive and Neural Mechanisms of Gesture in Communication

Author Spotlight: Deciphering the Cognitive and Neural Mechanisms of Gesture in Communication

Published on: January 26, 2024

Morphological differences between imperative and declarative pointing: hand shape, arm extension, and body posture.

Hélène Cochet¹, Marianne Jover, Lucie Oger

¹a Laboratory "Cognition, Communication and Development" (Octogone - ECCD, EA 4156) University of Toulouse II , Department of Psychology , Toulouse , France.

Journal of Motor Behavior

|April 16, 2014

Summary

Young children

Keywords:

arm extension body posture gestural communication hand shape imperative and declarative pointing reaching

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Published on: April 16, 2014

Area of Science:

Developmental psychology
Gestural communication
Child development

Background:

Pointing gestures are crucial for early communication.
Understanding the nuances of imperative and declarative pointing is key to developmental research.
Distinguishing pointing from reaching actions provides insights into motor control and communicative intent.

Purpose of the Study:

To quantitatively analyze the morphological features of imperative and declarative pointing gestures in young children.
To compare pointing gestures with reaching actions.
To investigate the influence of contextual variables, such as distractors, on pointing gesture morphology.

Main Methods:

Frame-by-frame video analysis of children's gestures.
Quantitative measurement of morphological features (hand shape, arm extension, body posture).
Comparison of pointing gestures (imperative and declarative) with reaching actions under varying conditions.

Main Results:

Imperative pointing shares features like hand shape and arm extension with reaching, but differs in body posture.
Body posture in reaching actions is distinct from both imperative and declarative pointing.
Gesture morphology adapts to precision demands; imperative pointing shifts to index-finger use with distractors.

Conclusions:

Pointing gestures and reaching actions share some motor features but diverge in body posture and contextual adaptation.
Morphological variations in pointing gestures are influenced by communicative goals and environmental constraints.
This research offers novel quantitative insights into the development and nature of early communicative gestures.