A psychologist or philosopher who specializes in or advocates gestalt psychology, the study of how we perceive organized wholes.
From gestalt psychology plus the suffix '-ist' (one who practices or believes in something), emerging as a technical term in mid-20th-century psychology.
Early gestaltists were trying to answer why we see a flock of birds as one moving mass rather than hundreds of individual flapping creatures—a question that still fascinates neuroscientists.
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