Information-Processing Approach

The information-processing approach explains how infants perceive, encode, store, and respond to information over time.

In this approach, habituation is a form of learning where repeated exposure to a stimulus leads to a reduced response, such as less attention to the stimulus.

Researchers study habituation in newborns by repeatedly showing a stimulus, such as a visual pattern.

When a new stimulus is introduced, an infant who has been sucking typically pauses or sucks less to focus on it.

As the stimulus becomes familiar, infants start sucking again, pointing to habituation.

Dishabituation happens when another new stimulus appears.

Infants again shift attention and slow their sucking, showing renewed interest.

To measure habituation and dishabituation, researchers monitor infants’ responses such as heart rate, sucking behavior, eye movements, and even brain activity.

Researchers assess infants’ information-processing efficiency by observing how quickly they habituate to familiar stimuli.

They also study how quickly infants shift their attention to new stimuli and how long they continue looking at both familiar and new stimuli.