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Delboeuf illusion

a size contrast illusion in which a larger enclosing circle influences the perceived size of a smaller enclosed circle. If the two circles are of similar sizes, the perceived size of the inner circle will be increased. If the size of the enclosing circle is significantly larger, then the perceived size of the inner circle will be decreased. [Joseph-Rémi-Léopold Delboeuf]

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Psychology term of the day

May 8th 2024

alcoholic

alcoholic

n. a person who is dependent on alcohol, that is, who regularly drinks to the point of intoxication despite negative consequences. See also alcohol dependence.