Every since civilization started many people have been suffering from psychological disorders such as sadness and strange and awkward behavior. There have been many of scientists that have tried to figure out the cure for them and treat these disorders. Classifying psychological disorders have their roots back far in ancient times with the Romans and the Egyptians. Even today, classifying psychological disorders follow a medical type model.

Sociologist Herbert Mead developed a theory known as social behaviorism, which helped explained why past social experiences help form an individuals’ personality. Mead did not believe that personality was developed by drives or biologically, but more on terms socially. He stated that the self only developed when people interact with one another. Without the interaction of other people an individual can’t develop a personality.

People always fluctuate in their behavior from day to day and we all have had our times in which we acted rude to people, and had the pleasure of having the reverse happen as well. Kay Redfield Jamison an international guru of about mood disorders has had her share of mood swings during her times. For years she kept this extreme psychological disorder a secret in which she had moods that switched from being super excited known as mania, to times that she was lethargic and depressed. She actually wrote a book about these events and tells about it in more detail.

Personality like many things in life is sort of concrete and can be difficult to define at times. The basic definition is the relatively stable characteristics that are enduring and distinctive which means it separates people from the crowd. Psychologists that study personalities try to analyze why people act differently to different situations such as why one person acts shy when they first meet a stranger or while some people are just natural and funny and be themselves.