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Related Experiment Video

Updated: Dec 10, 2025

Training Synesthetic Letter-color Associations by Reading in Color

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 20, 2014

Color-shape associations affect feature binding.

Na Chen^1,2, Katsumi Watanabe³

¹Faculty of Science and Engineering, Waseda University, Tokyo, Japan. imminana7@gmail.com.

Psychonomic Bulletin & Review

|September 3, 2020

Summary

This summary is machine-generated.

Color-shape associations influence how people perceive visual information. Incongruent associations increase illusory conjunctions, suggesting these links affect feature binding.

Keywords:

Color–shape association Feature binding Illusory conjunction

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Area of Science:

Cognitive psychology
Visual perception
Neuroscience

Background:

Non-synesthetic individuals often exhibit consistent color-shape associations (e.g., circle-red).
Illusory conjunctions occur when features from different stimuli are incorrectly combined.

Purpose of the Study:

To investigate if pre-existing color-shape associations impact illusory conjunctions.
To determine the role of these associations in visual feature binding.

Main Methods:

Participants viewed central letters and peripheral colored-shape stimuli.
Tasks included identifying letters, reporting shape colors, and confidence ratings.
Stimuli were presented in conditions congruent or incongruent with established color-shape associations.

Main Results:

A higher rate of illusory conjunctions was observed in the incongruent condition.
Color-shape associations appear to influence visual perception and feature binding.

Conclusions:

Color-shape associations may influence feature binding processes.
This influence could occur during initial feature integration or via top-down feedback mechanisms.