Orientation Sensitivity

Principle

People more easily detect horizontal and vertical lines. • Diagonal or off-axis lines take longer to process. • Affects legibility, UI clarity, and visual scanning efficiency. • Favor grid-based, orthogonal layouts for quick recognition.

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Expectation Effect

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Top-Down Lighting Bias

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Common Fate

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Performance Load

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Self-Similarity

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Flexibility-Usability Tradeoff

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