why might adolescence be a stressful time for many teenagers?; briefly describe how risk-taking behavior in adolescence is connected to brain maturation.; what are some factors that influence emotional changes throughout adolescence?; what are some of the common physical changes for boys and girls during puberty?; compare and contrast the early adolescence period to the late adolescence period.; adolescence covers the stage of personal development and growth between childhood and adulthood.; as teens move through adolescence, __________.; the adolescent period can be divided into early, middle, and late periods.