Part one of term paper
is the developmental stage between childhood and adulthood; it generally refers to a period ranging from age 12 or 13 through age 19 or 21. Although its beginning is often balanced with the beginning of puberty, is characterized by psychological and social stages as well as by biological changes. Adolescence can be prolonged, brief, or vir ...

Part two of term paper
... has been steadily lengthening over the past 100 years, giving rise to an adolescent subculture. As a result of this prolonged transitional stage a variety of problems and concerns specifically associated with this age group have developed. Psychologists single out four areas that especially touch upon adolescent behavior and development: physiological change and growth; cognitive, or mental development; identity, or personality formation; and parent-adolescent relations. Physiological Cha ...