A Johns Hopkins infant reaches for a white rat-then a hammer strikes behind his head; did behaviorism manufacture an emotion or merely nudge a reflex?
The hammer strike behind the infant's head unmade the claim that fear was innate
In this episode, we lay out the sequence of events recorded in the surviving film and original report that made "Little Albert" the center of a century-long debate. We trace the study’s methods, the people in the room, and the conflicting clues about who the infant might have been - and ask what that history does to the claim that fear can be created in a lab.
Person: John B. Watson
Person: Rosalie Rayner
Subject: "Albert B." (infant)
Location: Johns Hopkins University, Baltimore
Date: 1920 (initial assessments); 1920 (conditioning sessions)
- A nine-month-old infant identified only as "Albert B." was assessed with a white rat, rabbit, dog, masks, cotton and wool and showed no fear responses.
- At eleven months, experimenters paired the rat with a sudden hammer strike on a suspended steel bar directly behind the infant’s head to elicit startle responses.
- After repeated pairings, the infant began to whimper, tremble, turn away, and later withdrew from the rat when it was presented alone.
- Subsequent sessions tested generalization: the infant reacted to a rabbit, a furry dog, a fur coat, and a Santa Claus mask trimmed with cotton, though Watson noted the effect was "neither strong nor lasting."
- Two different men have been proposed as the surviving identities of the infant in the film, one who died at six and one who lived to eighty-seven, creating a real but unresolved contradiction in the historical record.
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