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INTRO TO PSYCH sep. 11

INTRO TO PSYCH sep. 11 - INTRO TO PSYCH...

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INTRO TO PSYCH September 11, 2006 EXPERIMENT -hypothesis: independent variable causes the dependent variable -independent variable has levels, amounts, types, and categories. -dependent variable is measured, expect it to be different, depending on level of independent variable -experimental group—gets some “unusual” or “experimental” level, amount, type, of independent variable -control group—gets the “usual” level, amount, type, of independent variable -must have random assignment of subjects to groups in order to have an experiment . -THE REFRACTORY PERIOD LASTS ABOUT 1/1000 OF A SECOND -Neural impulses can travel 2-200 MPH -A synapse is about 5/millionths of an inch wide - We have about 300 trillion synaptic connections Neurotransmitters Dopamine -MOVEMENT, LEARNING, ATTENTION, EMOTION AND REWARD. -TOO MUCH SCHIZOPHRENIA -TOO LITTLE PARKINSON’S DISEASE -COCAINE INCREASES DOPAMINE Serotonin -mood, hunger, sleep, arousal -too little is associated with depression -antidepressant medications increase serotonin
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