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Related Concept Videos

Color Vision01:24

Color Vision

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Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
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Perceptual Constancy01:12

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Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
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Related Experiment Video

Updated: Jul 4, 2025

Examining Bilingual Language Control Using the Stroop Task
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Color-taste correspondence tested by the Stroop task.

Yidie Yang1, Na Chen2, Maiko Kobayashi1

  • 1Faculty of Science and Engineering, Waseda University, Tokyo, Japan.

Frontiers in Psychology
|February 8, 2024
PubMed
Summary

Color associations with taste, like pink for sweet and yellow for sour, impact cognitive processing. This study found that matching colors and tastes speeds up reactions in taste and color identification tasks.

Keywords:
Stroopcolor-taste correspondencecongruency effectsour-yellowsweet-pink

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Area of Science:

  • Cognitive Psychology
  • Sensory Science
  • Cross-modal Perception

Background:

  • Color-taste correspondences are common, yet their processing strength is not well understood.
  • Existing research suggests links between sensory modalities, but the bidirectional influence requires further investigation.

Purpose of the Study:

  • To investigate the strength and bidirectional nature of color-taste congruency effects.
  • To examine how color-taste associations influence cognitive tasks involving taste categorization and color discrimination.

Main Methods:

  • Utilized two Stroop tasks: word-taste categorization and word-color discrimination.
  • Presented food names associated with sweet and sour tastes in congruent and incongruent pink and yellow font colors.

Main Results:

  • Participants responded significantly faster in congruent conditions (e.g., sweet-pink, sour-yellow) compared to incongruent conditions.
  • Yellow font colors enhanced sour taste word categorization, while pink font colors aided sweet taste word discrimination.
  • Evidence of a bidirectional congruency effect influencing both taste meaning and color perception.

Conclusions:

  • Color-taste congruency significantly affects cognitive processing, as demonstrated by the Stroop task.
  • The congruency effect operates bidirectionally, impacting both conceptual taste processing and perceptual color identification.
  • These findings underscore the robust nature of learned associations between color and taste in human cognition.