In Gestalt psychology, the Zeigarnik effect has been used to demonstrate the general presence of Gestalt phenomena : not just appearing as perceptual effects, but also present in cognition.
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The Zeigarnik effect suggests that students who suspend their study, during which they do unrelated activities ( such as studying unrelated subjects or playing games ), will remember material better than students who complete study sessions without a break ( McKinney 1935; Zeigarnik, 1927 ).
