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Related Experiment Video

Updated: May 31, 2026

Measuring Attentional Biases for Threat in Children and Adults

Measuring Attentional Biases for Threat in Children and Adults

Published on: October 19, 2014

Developing a side bias for conspecific faces during childhood.

Benjamin Balas¹, Margaret C Moulson

¹Brain and Cognitive Sciences Department, Massachusetts Institute of Technology, MA, USA. balaslab.ndsu@gmail.com

Developmental Psychology

|July 20, 2011

Summary

This summary is machine-generated.

Children aged 5-10 years develop a left-side bias in face perception, especially for human faces. This visual-field preference for facial information grows with age, suggesting experience shapes perception.

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Area of Science:

Developmental psychology
Cognitive neuroscience
Visual perception

Background:

Adults exhibit a left-visual-field advantage when processing facial information for gender, emotion, and identity.
The developmental trajectory and category selectivity of this left-side bias in children remain underexplored.

Purpose of the Study:

To investigate the development of the left-side visual-field bias in face perception among children aged 5-10 years.
To determine if this bias is selective, examining its strength for human versus non-human (monkey) faces, which differ in developmental experience.

Main Methods:

Children aged 5-10 years were presented with human and monkey faces.
Participants' judgments of gender, emotion, and identity were analyzed based on visual field preference.
The study compared the left-side bias across different age groups and face categories.

Main Results:

A significant developmental trend in the left-side bias was observed across the 5-10 year age range.
The left-side bias for human faces increased with age, indicating a developmental trajectory.
In contrast, the left-side bias for monkey faces did not show a similar developmental increase, suggesting category selectivity.

Conclusions:

The left-side visual-field bias in face perception develops during middle childhood.
This bias is selective, strengthening for human faces with age due to experience-dependent perceptual narrowing.
Findings highlight the role of experience in shaping specialized visual processing for familiar categories.