
In 1996, John Bargh, Mark Chen, and Lara Burrows conducted one of the most striking — and controversial — demonstrations of unconscious priming in psychology.
Participants were asked to unscramble sentences containing words associated with elderly stereotypes: "Florida", "forgetful", "bingo", "retired", "wrinkle." A control group unscrambled neutral words. Participants were then observed walking down a hallway to leave.
Participants primed with elderly-related words walked significantly more slowly down the hallway than the control group — without any awareness that their walking speed had changed.
This specific study has had inconsistent replication results — some labs confirmed it, others failed to replicate it. The broader concept of priming is well-established; the specific elderly-walking finding remains debated.
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