little albert

The "Little Albert" experiment was a famous psychology experiment conducted by behaviorist John B. Watson and graduate student Rosalie Raynor. Previously, Russian physiologist Ivan Pavlov had conducted experiments demonstrating the conditioning process in dogs. Watson was interested in taking Pavlov's research further to show that emotional reactions could be classically conditioned in people.
The participant in the experiment was a child that Watson and Raynor called "Albert B.", but is known popularly today as Little Albert. Around the age of nine months, Watson and Raynor exposed the child to a series of stimuli including a white rat, a rabbit, a monkey, masks and burning newspapers and observed the boy's reactions. The boy initially showed no fear of any of the objects he was shown.
The next time Albert was exposed the rat, Watson made a loud noise by hitting a metal pipe with a hammer. Naturally, the child began to cry after hearing the loud noise. After repeatedly pairing the white rat with the loud noise, Albert began to cry simply after seeing the rat.
Watson and Raynor wrote:
"The instant the rat was shown, the baby began to cry. Almost instantly he turned sharply to the left, fell over on [his] left side, raised himself on all fours and began to crawl away so rapidly that he was caught with difficulty before reaching the edge of the table."
Elements of Classical Conditioning in the Little Albert Experiment
The Little Albert experiment presents and example of how classical conditioning can be used to condition an emotional response.
• Neutral Stimulus: The white rat
• Unconditioned Stimulus: The loud noise
In classical conditioning, the unconditioned stimulus is one that unconditionally, naturally, and automatically triggers a response. For example, when you smell one of your favorite foods, you may immediately feel very hungry. In this example, the smell of the food is the unconditioned stimulus.
• Unconditioned Response: Fear
In classical conditioning, the unconditioned response is the unlearned response that occurs naturally in response to the unconditioned stimulus. For example, if the smell of food is the unconditioned stimulus, the feeling of hunger in response to the smell of food is the unconditioned response.
• Conditioned Stimulus: The white rat
In classical conditioning, the conditioned stimulus is previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response.
• For example, suppose that the smell of food is an unconditioned stimulus and a feeling of hunger is the unconditioned response. Now, imagine that when you smelled your favorite food, you also heard the sound of a whistle. While the whistle is unrelated to the smell of the food, if the sound of the whistle was paired multiple times with the smell, the sound would eventually trigger the conditioned response. In this case, the sound of the whistle is the conditioned stimulus.
• Conditioned Response: Fear
In classical conditioning, the conditioned response is the learned response to the previously neutral stimulus. For example, let's suppose that the smell of food is an unconditioned stimulus, a feeling of hunger in response the the smell is a unconditioned response, and a the sound of a whistle is the conditioned stimulus. The conditioned response would be feeling hungry when you heard the sound of the whistle.


Stimulus Generalization in the Little Albert Experiment
In addition to demonstrating that emotional responses could be conditioned in humans, Watson and Raynor also observed that stimulus generalization had occurred. After conditioning, Albert feared not just the white rat, but a wide variety of similar white objects as well. His fear included other furry objects including Raynor's fur coat and Watson wearing a Santa Claus beard.
Criticisms of the Little Albert Experiment
While the experiment is one of psychology's most famous and is included in nearly every introductory psychology course, it has also been criticized widely for several reasons. First, the experimental design and process was not carefully constructed. Watson and Raynor did not develop an object means to evaluate Albert's reactions, instead relying on their own subjective interpretations. Secondly, the experiment also raises many ethical concerns. The Little Albert experiment could not be conducted by today's standards because it would be unethical.
What Ever Happened to Little Albert?
The question of what happened to Little Albert has long been one of psychology's mysteries. Watson and Raynor were unable to attempt to eliminate the boy's conditioned fear because he moved with his mother shortly after the experiment ended. Some envisioned the boy growing into a man with a strange phobia of white, furry objects.
Recently, however, the true identity and fate of the boy known as Little Albert was discovered. As reported in American Psychologist, a seven-year search led by psychologist Hall P. Beck led to the discovery. After tracking down the location of the original experiments and the real identity of the boy's mother, it was discovered that Little Albert was actually a boy named Douglas Merritte.
The story does not have a happy ending, however. Douglas died at the age of six on May 10, 1925 of hydrocephalus, a build-up of fluid in his brain. "Our search of seven years was longer than the little boy’s life," Beck wrote of the discovery.

References:
Beck, H. P., Levinson, S., & Irons, G. (2009). Finding little Albert: A journey to John B. Watson’s infant laboratory. American Psychologist, Vol 64(7), 605-614.
Watson, John B. & Rayner, Rosalie. (1920). Conditioned emotional reactions. Journal of Experimental Psychology, 3, 1-14.

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