In an experiment by Henri Tajfel, participants were shown six lines that varied in length. In the condition in which the lines were categorized into two groups,

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Henri Tajfel's experiments on social categorization demonstrated that people tend to exaggerate the differences between categories, even with arbitrary distinctions. In the context of lines categorized into two groups, participants perceived the lines as longer or shorter based on the category, highlighting the influence of categorization on perception.

In an Experiment by Henri Tajfel, Participants Were Shown Six