11)_Motivation-2_v3

11)_Motivation-2_v3 - Which of the following is the MOST...

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Which of the following is the MOST accurate about your dreams? A) They reflect my unconscious beliefs/ desires B) They reflect my conscious reality, beliefs/ desires C) They seem completely random D) I don’t remember my dreams/don’t know 1
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Announcements Exams and Papers returned next Tuesday Sign up for Coffee Time 2
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Today’s Plan • Sleep – Why sleep? – Memory Consolidation • Motivation – Regulatory Drives – Nonregulatory Drives – Motivation and Drug Use 3
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Why sleep? – Recuperation Restorative process “Common sense” theory (face validity) Little physiological evidence – Benefits of wakeful resting Suggestive evidence? – Slow wave sleep deprivation tiredness – REM deprivation anxious/irritable 4
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Why sleep? Evolutionary arguments Survival of the fittest? Passing on genes Producing reproductive offspring For humans – think “hunter-gatherers” Often post-hoc/difficult to test empirically Empirical test Make prediction & test it Example: sleep depends on protection and grazing needs Difficult to hide? less sleep Elephants – 3 hours Need to graze a lot? less sleep Bats – 20 hours 5
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Why sleep?
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