Little Albert Experiment

What was the Little Albert experiment?

The Little Albert study was John B. Watson and Rosalie Rayner’s 1920 report of an attempt to condition fear in one infant. They paired a white rat with a loud sound produced by striking a metal bar. The sound served as the unconditioned stimulus.

Classical conditioning and the reported results

In classical-conditioning terms, the rat began as the neutral stimulus and became the conditioned stimulus after pairing with the noise. The reported fear response to the rat was the conditioned response. Responses to other objects were examined as possible generalization.

The original case report records avoidance and distress when the rat was later presented without the sound, along with varying responses to other animals and objects. Some responses remained at a later assessment, but their intensity varied.

What happened with other objects?

The report describes crying and withdrawal from a rabbit, a less intense initial response to a dog, and distress at a sealskin coat. Cotton wool produced a more mixed response: Albert withdrew his hands at first but later touched some of it. He continued to play with blocks between tests. These observations are more specific than saying he became afraid of everything white or furry.

Later sessions also paired the rabbit and dog directly with the noise. Their later effects therefore cannot all be treated as generalization from the rat alone. Without a control group or standardized measures, the report cannot cleanly separate those influences.

The authors discussed possible ways to remove the responses but said the child left the hospital before they could test them. Their claim of lifelong persistence was a speculation, not a result from lifelong follow-up.

Ethical and methodological criticisms

A single uncontrolled case does not establish that all emotional reactions or adult phobias are learned in this way. Deliberately producing distress in an infant is also central to the study’s ethical criticism. The report is historically important, but its observations should be separated from its much broader claims.