The Little Albert experiment, conducted by John B. Watson, explored the development of fear responses through classical conditioning. Over the course of the experiment, it was observed that Albert's fear response diminished over time. This decrease in fear was noted even between trials, indicating that the intensity of his fear was not static but rather decreased as the experiment progressed.

Additionally, the experiment demonstrated the phenomenon of stimulus generalization. Initially, Albert was conditioned to fear a white rat, but this fear extended to other similar stimuli, including white rabbits, Santa Claus masks, and white fur coats. This generalization illustrates how fear responses can transfer from one object to another based on shared characteristics, a key concept in understanding behavioral psychology.