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Psych 315 Lecture 3

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Maureen Drysdale

Sept. 25, 2012 Psych 315 Physical Changes in the Brain  Two stages of pruning – first stage (grey matter being developed) 2 stage (gray matter being thinned out and white matter is thickening where in the nerve signal transitions are faster and better (better decision making and more adult thinking; occurs well in 30s) o Genetics o Use it or lose it principle – the more you use it, the less you lose it  Last part to be pruned – very last part to be developed o Prefontal cortex – home of executive functions – responsible for planning, setting priorities, organizing your thoughts, suppressing impulses and weighing consequences of your actions  See Handout Cognitive development  How does cognition change during adolescent period? o INFLUENCE: Adolescent on the environment and environment on adolescent 1. Qualitative changes – how they’re thinking changes; What is changing? 2. Quantities changes – how much do they know? How much new information are they acquiring?  Piaget: 4 stages o Sensory motor o Pre-operational stage o Concrete operational o Formal operational change – abstract and hypothetical thinking (children recognizing that their thought about reality are different); thinking advance  They’re knowing that right answers are context specific  If and only if – I’ll be happy if and only if I get that????  Information processing – becomes more advanced during adolescents - Executive functions o Decision making is better; making more and better decisions; better at recognizing valid information and questioning invalid information o Reasoning – they can construct theories, has better reasoning, moving towards deductive thinking and become better at testing theories and they test them rationally o Critical thinking and idealism – more strategies from which you could obtain knowledge; we realize the actual is less than ideal that’s why we get to be involved in protests and everything because we now know that the world is not just o Creative thinking – is different from intelligence; convergent (more of intelligence; one correct answer)and divergent thinking (creativity; more open, you’re producing
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