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CD-0068 (19)
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Cognitive Development .docx

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Department
Child Development
Course
CD-0068
Professor
Tama Leventhal
Semester
Fall

Description
Cognitive Development  04/15/2014 Measuring Brain Development Studies of structure Animal studies Examine brain tissue after death Studies of structure and function EEG PET Shows structure of brain  fMRI Looks at brain activity while engaging in an activity to see what regions of the brain are activated  DTI Looks at connectivity between different regions of the brain using myelination  Peaks of Development Weight  Brain reaches full weight at 10­12 years of age Brain reaches 90% of its weight by 5 years of age 2 peaks Before birth and around age 3­5 Puberty (around 14­16) Reaches full development around 24­25 years  Plasticity of development important Major Changes in Brain Development during Adolescence Prefrontal cortex (frontal lobe) Hub of structural changes in the brain during adolescence Cognitive abilities coordinated and controlled Executive functioning (parts) Dorsolateral: planning ahead, controlling impulses Ventromedial: gut­level decision­making, strong connections to limbic system (social and emotional)  Orbitofrontal: risk and rewards Prefrontal cortex continues to mature into adulthood  Limbic system (emotional drives) Develops and reaches full maturation during adolescence Parts  Hippocampus Thalamus Amygdala Hypothalamus Functions    Food Fear Fighting Sex  Prefrontal and limbic ▯ self­regulatory behavior What are the behavioral implications of timing of brain maturation? Novelty Excitement, going to be on TV Rather take risk than do something socially unacceptable  Presence of peers  Personal fable – “won’t happen to me” Impaired
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