Chapter 11

Chapter 11 - Chapter Eleven Lecture Notes Physical and...

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Chapter Eleven Lecture Notes Physical and Cognitive Development in Adolescence Focus: Anne Frank, Diarist of the Holocaust As a young teen in 1942, Anne and her family went into hiding from the Nazis In her diary, she documented her life in hiding o Hopes, dreams and even sexual feelings Family discovered in a raid in 1944 ADOLESCENCE: A DEVELOPMENTAL TRANSITION Adolescence: Developmental transition between childhood and adulthood entailing major physical, cognitive, and psychosocial changes. Puberty: Process by which a person attains sexual maturity and the ability to reproduce. Pubescence: Term meaning puberty. PHYSICAL DEVELOPMENT Growth spurt Pubic hair Deeper voice Muscular growth PUBERTY: THE END OF CHILDHOOD Girls: between 9-10 How Puberty Begins: Hormonal Changes Adrenarche: Maturing of the adrenal glands. o Between ages 6-9 o Production of androgens (DHEA) Gonadarche: Maturing of the sex organs and the appearance of more obvious pubertal changes. o Girls: ovaries increase estrogen o Boys: testes increases androgens Dehydroepiandrosterone (DHEA): An androgen secreted by the adrenal glands which plays a part in the growth of pubic, axillary, and facial hair, as well as in faster body growth, oilier skin, and the development of body odor. Timing, Sequence, and Signs of Puberty and Sexual Maturity Primary and Secondary Sex Characteristics Primary sex characteristics: Organs directly related to reproduction, which enlarge and mature during adolescence. Secondary sex characteristics: Physiological signs of sexual maturation (such as breast development and growth of body hair) that do not involve the sex organs. Areolae: The pigmented areas surrounding the nipples, which enlarge during puberty. Influences on Onset of Puberty 1
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Secular trend: Trend that can be seen only by observing several generations, such as the trend toward earlier attainment of adult height and sexual maturity, which began a century ago. o A decrease in average of pubertal onset o Possible explanations: Higher standard of living/better nutrition Overweight Relationship with father pheromones Pheromes: Odorous chemicals given off by men and women, which attract mates. The Adolescent Growth Spurt Adolescent growth spurt: Sharp increase in height and weight that precedes sexual maturity. Typically about 2 years Results in common gawkiness Girls’ spurt occurs earlier than boys Teens become more concerned about their appearance Signs of Sexual Maturity: Sperm Production and Menstruation Spermarche: Boy’s first ejaculation. o Average age at 13 o Nocturnal emission: An involuntary ejaculation of semen (commonly referred to as a wet dream) that happens at night in males. Menstruation: The monthly shedding of tissue from the lining of the womb.
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Chapter 11 - Chapter Eleven Lecture Notes Physical and...

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