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The context effect in face matching: Effects of feedback.

Bozana Meinhardt-Injac¹, Malte Persike, Günter Meinhardt

¹Department of Psychology, Binzmühlestrasse 14/22, University of Zürich, 8050 Zürich, Switzerland. b.meinhardt@psychologie.uzh.ch

Vision Research

|August 23, 2011

Summary

This study shows that with feedback, people can shift from holistic face perception to feature-based vision over time. Without feedback, this shift is less effective, especially in complex facial contexts.

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Area of Science:

Cognitive psychology
Visual perception
Neuroscience

Background:

Facial perception is typically holistic, especially under brief viewing conditions.
Extended viewing times may allow for a shift towards feature-based processing.
The role of feedback in modulating face perception strategies is not fully understood.

Purpose of the Study:

To investigate the influence of trial-by-trial feedback on face perception strategies.
To examine how viewing time and feedback interact to affect holistic versus feature-based processing.
To determine if learning opportunities can alter face perception under varying contextual conditions.

Main Methods:

Utilized a context congruency paradigm with varying viewing times and feedback conditions.
Manipulated the presence and absence of trial-by-trial feedback.
Introduced additional target features to assess performance changes.

Main Results:

Feedback improved performance in incongruent facial contexts, particularly at longer viewing times.
Without feedback, observers showed limited ability to suppress contextual interference.
Adding target features enhanced performance, especially when feedback was provided.

Conclusions:

Feedback facilitates the transition from holistic face perception to active, feature-based vision.
Sufficient temporal resources and learning opportunities enable adaptive shifts in visual processing.
These findings highlight the dynamic and context-dependent nature of face perception.