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Naturalistic Observations

Naturalistic Observations

If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...

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Related Experiment Video

Updated: May 8, 2025

Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior

Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior

Published on: November 14, 2018

Contributed Talks III: Infants' eye movements to scene statistics in natural behavior.

T Rowan Candy¹, Zachary Petroff¹, Stephanie Biehn¹

¹Indiana University.

Journal of Vision

|April 11, 2025

Summary

Young infants with limited mobility show restricted eye movements, focusing visual input. This early visual experience shapes developing foveal and parafoveal vision.

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Related Experiment Videos

Last Updated: May 8, 2025

Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior

Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior

Published on: November 14, 2018

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

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Published on: May 15, 2019

A View of Their Own: Capturing the Egocentric View of Infants and Toddlers with Head-Mounted Cameras

A View of Their Own: Capturing the Egocentric View of Infants and Toddlers with Head-Mounted Cameras

Published on: October 5, 2018

Area of Science:

Developmental Psychology
Neuroscience
Vision Science

Background:

Infants' visual interaction develops rapidly in early postnatal months.
Gross motor and spatial vision immaturities influence infant visual behavior.
Understanding early visual experience is crucial for developmental studies.

Purpose of the Study:

To analyze first-person video and eye-tracking data from infants.
To understand key components of visual experience during early visual learning.
To investigate the relationship between motor control and visual exploration in infants.

Main Methods:

Infants wore head-mounted scene and binocular eye-tracking cameras during naturalistic behavior.
Eye movements were calibrated, and image statistics were extracted at fixation locations.
Data from 10.5 hours of recordings across different infant age groups (2-12 months) were analyzed.

Main Results:

Younger infants (2-3 months) exhibited tighter eye position and saccade amplitude distributions relative to the head.
The distribution of RMS contrast around fixation was highest in younger infants.
Infants with limited head and trunk control showed a restricted range of eye movements.

Conclusions:

Limited mobility in young infants correlates with restricted eye movements and less active scene sampling.
Early visual input is characterized by a high concentration of contrast, supporting foveal and parafoveal function development.
A tight link exists between head- and eye-centered frames of reference in early infancy.