Zero-Sum Bias

Experimenters simulated a non zero-sum game, when the performance of one student would not impact the performance of another.

Though an unlimited number of high grades were available, students sill perceived that a high grade achieved by one student would result in a lower grade for the other. 

Even when there are unlimited resources, people tend to perceive situations as zero-sum, where one person’s win is another’s loss. 

See the full study here :

Meegan, D. V. (2010). Zero-sum bias: Perceived competition despite unlimited resources. Frontiers in psychology1, 191,

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