Characteristic 1: Panic-Phobic persons experience panic in response to their phobic stimulus
Characteristic 2: Avoidance-We tend to go out of our way to avoid coming into contact with a phobic stimulus
Characteristic 3: Endurance-The sufferer remains in the presence of the phobic stimulus, but continues to perceive it as threatening. This may be unavoidable e.g. when flying
For several weeks, Albert played happily with a white rat showing no fear. One day, while he was playing with the rat, the experimenters struck a steel bar with a hammer close to Albert's head. Albert was very frightened by the noise. This was repeated each time he reached for the rat. Albert then developed an intense fear of white rats.