In today's society, many individuals suffer from phobias and addictions. Phobias and addictions are typically paired because those with an addiction began with a phobia they were unaware of. Phobias and addictions should be fragmented into two groups of conditioning with the effects each partakes on an individual: classical and operant conditioning. Classical conditioning occurs when an individual discovers how to respond to a stimulus in their atmosphere. Operant conditioning is when one responds to a reward or penalty. The foremost difference between classical and operant conditioning is the response and a stimulus, which can lead to addictions and phobias.