Which perspective best describes adolescence? When does adolescence actually begin and end? What factors are involved that influence an adolescent\'s development? Solution Adolescence is a transitional stage where in a child continues to metamorphose into an adult. In other words the stage that lies between or that bridges childhood and adulthood. Adolescence is a phase of major physiological changes. At this stage the pubertal changes start taking place. Secondary sexual characters start appearing in both the sexes. Adolescence prepares an individual for adulthood. It is characterized by labile emotions, outburst of emotions, swift and rapid behavioral changes, self-interest, self-conscious, etc.i t is the second most important stage of development after infancy. It involves rapid cognitive, sexual and physical development. The onset age of adolescence in females is 8 to 14 and in males it is 9 to 15. The data suggests the onset-age decide type of the behavioral changes that occur in adolescence. Factors influencing the age of adolescence are as follows- Biological factors like hormones etc Stress and stressful environment Body weight and body fat distribution Socioeconomic status Nature, niche, habit, peer, etc Presence of long standing illness Diet and exercise.