The field of study known as Human Development is the committed scientific evaluation of the changes involved in a human lifespan from birth to death. There are several differing behavioral perspectives advanced by leaders in the field, but they are all united in one goal. All perspectives strive to recognize and describe the factors and events that transform and impact an individual during their lifetime. The following paragraphs have taken a simple nursery rhyme and addressed the human behaviors displayed in the context of some of the more prominent behavioral perspectives.
             Let us begin with the first line of the nursery rhyme. Jack and Jill went up the hill to fetch a pail of water. Jack and Jill are two adolescents living in a small rural English village sometime in the 1600's. Jill is a buxom young lady of considerable physical attraction who has been up the hill on several other occasions to fetch water. Actually, the well is a very secluded, often used place for amorous trysts. Jack has never fetched water before, and he is very nervous, although very excited at the prospect. He is sure Jill will instruct him in the correct water fetching technique.
             Let's apply the psychoanalytic perspective to this scenario. According to this theory, people move through a series of conflicts between biological drives and socially acceptable behavior. In Freud's theory, the personality has three parts-the id, ego, and superego. The id is the most basic of human desires and demands satisfaction above all else. The ego is middle management and is responsible for managing the id's desires into the appropriate time and place. The superego is the CEO, better known as the conscience of the human consciousness. He strives to make sure everything is done by the book and is always politically correct. Now id and superego are always at odds with each other, and poor
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