![]() ![]() Precocious puberty is puberty that begins abnormally early, and delayed puberty is puberty that begins abnormally late. The onset of puberty, the time in life when a person becomes sexually mature, typically occurs between ages 8 and 13 for girls and ages 9 and 14 for boys. Every person’s individual timetable for puberty is different and is primarily influenced by heredity however environmental factors-such as diet and exercise-also exert some influence.Īdolescence has evolved historically, with evidence indicating that this stage is lengthening as individuals start puberty earlier and transition to adulthood later than in the past. ![]() While the sequence of physical changes in puberty is predictable, the onset and pace of puberty vary widely. ![]() Puberty is the period of rapid growth and sexual development that begins in adolescence and starts at some point between ages 8 and 14. Physical Development during Adolescence Puberty Begins Discuss concerns associated with eating disorders.Describe health and sexual concerns during adolescence.Describe brain development during adolescence.Explain social and emotional attitudes and reactions toward puberty, including sex differences.Describe pubertal changes in body size, proportions, and sexual maturity.In this section, you will learn about the pubertal changes in body size, proportions, and sexual maturity, the social and emotional attitudes and reactions toward puberty, and some of the health concerns during adolescence, including eating disorders. In some ways, however, the changes in adolescence are more dramatic than those that occur in infancy-unlike infants, adolescents are aware of the changes that are taking place and of what the changes mean. These pubertal changes are driven by hormones, particularly an increase in testosterone for boys and estrogen for girls. The physical changes that occur during adolescence are greater than those of any other time of life, with the exception of infancy. Girls experience breast development and begin menstruating. Boys also experience growth in facial hair and a deepening of their voice. For both boys and girls, these changes include a growth spurt in height, growth of pubic and underarm hair, and skin changes (e.g., pimples). Physical changes of puberty mark the onset of adolescence (Lerner & Steinberg, 2009). ![]() What you’ll learn to do: describe the physical changes that occur during puberty and adolescence Understanding these developmental changes can help adults and adolescents enjoy this second decade of life. As you will learn, although the physical development of adolescents is often completed by age 18, the brain requires many more years to reach maturity. The details of growing bodies and the rational and irrational thinking of adolescents are covered in this module. Adolescents begin to learn about adult responsibilities and adult relationships. All of these changes occur in the context of rapidly expanding social spheres. During adolescence, children gain 50% of their adult body weight, experience puberty and become capable of reproducing, and experience an astounding transformation in their brains. Second only to infant development, adolescents experience rapid development in a short period of time. Adolescence is the period of development that begins at puberty and ends at early adulthood or emerging adulthood the typical age range is from 12 to 18 years, and this stage of development has some predictable milestones. In pre-industrial society, children were considered adults when they reached physical maturity however, today we have an extended time between childhood and adulthood known as adolescence. Adolescence is a socially constructed concept. ![]()
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