TAMU PSYC 307 - 12 - Adolescence Physical Development (1) (27 pages)

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12 - Adolescence Physical Development (1)



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12 - Adolescence Physical Development (1)

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Pages:
27
School:
Texas A&M University
Course:
Psyc 307 - Developmntl Psychology

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Dr van Widenfelt PSYC 307 100 Fall 2015 Agenda for unit on Adolescence Covers chapters 14 16 Puberty Physical changes Brain Development Cognitive Development Piaget Formal Op Identity Development Social emotional Development Eating disorders depression substance abuse behavior problems Brain maturation The Brain Adolescents brains undergo significant changes The corpus callosum thickens further information processing facilitated by improved connection of the brain s left and right hemispheres The limibic system and amygdala Emotions matures further The prefrontal cortex make judgements planning emotional control doesn t finish maturing until the emerging adult years approximately 18 to 25 years of age Instinctual and emotional areas develop before the reflective ones do A major research area examining which comes first biological changes or experiences that stimulate these changes and the interaction https www youtube com watch v 6zVS8HIPUng Sara Jayne Blakemore TED 14 minutes 2012 Adolescence Changes that occur are DRAMATIC Rate of growth second to fetal development Most significant change is onset of puberty Puberty Begins Age of Puberty Age 11 or 12 considered normal in those as young as age 8 or as old as age 14 Precocious puberty sexual development before age 8 occurs rarely about 1 in 5 000 children for unknown reasons Timing Most of variation in age of onset is genetic Each generation has experienced puberty a few weeks earlier and has grown a centimeter or so taller than did the preceding one Rate of development boys onset of puberty 18 24 months after girls and is slower takes longer For boys can last till 19 or so Puberty Begins Hormones Leptin A hormone that stimulates appetite is believed to be involved in the onset of puberty Increases during childhood and peak at around age 12 body fat influences onset of puberty Body fat Girls gain about 20 kilos boys 30 kilos Most girls must weigh at least 100 pounds before experiencing first period Note Children who



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