HIGHLIGHTS
SUMMARY
The study of angularity in aesthetics dates back more than a century with a number of early studies showing that angled lines are associated with negative emotions such as agitating, hard, and furious. In a subsequent study they found greater activation of the amygdala (involved in processing fear and arousal) in response to sharp-angled contours compared to rounded counterparts. For comparison the authors also include right angles equal to 90° and straight angles (lines) equal to 180°. Estimates of perceived threat would be highest at smaller angles and hypothesized to drop monotonically as . . .
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