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Visual Complexity and Affect: Ratings Reflect More Than Meets the Eye.

Christopher R Madan1,2, Janine Bayer1, Matthias Gamer1,3

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Summary

Emotional arousal influences how people perceive visual complexity, creating an "arousal-complexity bias." This bias affects how complex images are rated, independent of objective measures, impacting experimental design with visual stimuli.

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Area of Science:

  • Psychology
  • Cognitive Science
  • Visual Perception

Background:

  • Visual complexity describes dimensions of pictorial stimuli, such as the number of objects and colors.
  • Prior research suggests complex pictures are perceived as more pleasant and arousing.
  • Affective states may influence the perception of visual complexity.

Purpose of the Study:

  • To investigate the relationship between affect and perceived visual complexity.
  • To determine if affect influences ratings of visual complexity.
  • To explore the phenomenon of the 'arousal-complexity bias'.

Main Methods:

  • Conducted a series of experiments correlating affective ratings with visual complexity ratings.
  • Utilized computational measures of visual complexity.
  • Examined factors that might attenuate the arousal-complexity bias.

Main Results:

  • Perceived visual complexity ratings correlated with affective ratings.
  • Computational measures of visual complexity did not correlate with affect.
  • An 'arousal-complexity bias' was identified as a robust phenomenon.
  • This bias could be attenuated by explicit indication and was largely unrelated to individual differences in affective processing or cognitive/eyetracking measures.

Conclusions:

  • The arousal-complexity bias appears to stem from the relationship between arousal and visual processing, potentially due to enhanced vividness of arousing pictures.
  • Visual complexity is an important factor to control for in experiments using pictorial stimuli.
  • Affective states significantly impact the perception of visual complexity.