What group of psychologists are most closely associated with the slogan "The whole is different from the sum of its parts"?

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This slogan is a key principle of Gestalt psychology, which emphasizes that our perception and understanding of the world is not simply the sum of its individual parts, but rather, is influenced by the ways in which those parts are organized and connected. Gestalt psychologists were particularly interested in perceptual processes and how we make sense of visual information, and their work has had a significant impact on fields such as cognitive psychology, human-computer interaction, and design.

What Group of Psychologists Are Most Closely Associated with the Slogan