chapter 15 - Chapter 15 Adolescence Adolescence: the years...

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Chapter 15 Adolescence - Adolescence: the years spent morphing from child to adult o Starts with the physical beginnings of sexual maturity and ends with the social achievement of independent adult status - G Stanley Hall one of the first psychologists to describe adolescence believed that this tension between biological maturity and social dependence creates a period of “storm and stress” Physical Development - Adolescence begins with puberty (time when we mature sexually) which follows a surge of hormones which may intensify moods and which trigger a two year period of rapid physical development o Beginning at age 11 for girls, 13 for boys o Boys grow taller than females generally o primary sex characteristics (reproductive organs and external genitalia) and secondary sex characteristics (non reproductive traits such as breasts and hips in girls, facial hair and deepened voice in boys) develop during this period o a year or two before puberty, boys and girls feel the first stirrings of attraction toward those of the other sex o puberty for girls starts with breast development—usually at age 10 o puberty landmarks for boys are starts with the first ejaculation in boys--- usually 14 o puberty landmarks for girls are the first menstrual period (called menarche) for girls--- usually age 12 and ½ o sequence of physical changes is much more predictable than timing o for boys who mature earlier, they are more athletic and stronger which makes them tend to be popular, self assured and more independent o for girls who mature earlier, they may suffer teasing and sexual harassment o until puberty, the brain cells increase their connections, then during adolescence comes a selective pruning of unused neurons and connections. .. what we don’t use, we lose o frontal lobes continue to develop as teens mature, growth of myelin (fatty tissue that forms around axon and speeds neurotransmission, enables better communication with other brain regions)
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Chapter 15 Adolescence brings improved judgement, impulse control and ability to plan for the long term lags the emotional limbic system, puberty’s hormonal surge and limbic system development help explain teen’s occasional impulsiveness, risky behaviours,
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chapter 15 - Chapter 15 Adolescence Adolescence: the years...

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