023 Common Fate

Things that move in similar directions are perceived to be related.

• One of the Gestalt principles of perception.

• Things that move together in common directions are perceived as a single unit or chunk, and are interpreted to be more related than things that move at different times or in different directions.

• Perceived relatedness is strongest when motion occurs at the same time, velocity, and direction. As these factors vary, perceived relatedness decreases.

• Common fate influences whether things are perceived as figures or ground: moving elements are perceived as figures, and stationary elements as ground.

• Consider common fate when displaying information with moving or flickering elements. Related elements should move ...

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