2007-09-25

2007-09-25 - Null Hypothesis – what is a significant...

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Unformatted text preview: 2007-09-25Null Hypothesis – what is a significant difference?•1. Is difference of ‘x’ real?•2. Assume its not ‘null hypothesis’oProbability of difference of ‘x’•Reject a null hypothesis if it is highly unlikelyoIe. A real difference is present•Accept it if it is not highly unlikely•Read 78-98, 98-124Biological PerspectivesMind Body Dualism•Mind is a spiritual entity•Not subject to physical laws that govern body•Cannot be studied scientifically•Eg. Love, affection, etc are explained by something other than a biological functionMonism – Richard Thomson and Daniel Robinson•Mind and body are one•Mental events are a product of physical events•Can be studied scientifically•Chemical signals and reactions occur when emotions are feltFunctions of the Brain:1.Produces Behaviour2.Create a Sensory Reality: neural images and sounds3.Create and use knowledge: experiences, memories (retain it, learn from it and then retrieve the information) •20% of caloric intake is consumed in the brain, but the brain is only 2% of our body weight•Cortex – spongy layer, packed with nerve cells, 2/3 of neurons hereoProcesses senses, activitiesThe Neuron•Neuron – basic building block of nervous systemoLinked together in circuitsoAt birth, humans have 100 billion neurons (would circle earth 24 times)oLose about 10 000 each dayoMore than 200 have been seen in microscope•Cell body (soma)oContains genetic info determining cell functionoSize of the cell body varies from 5-100 microns (100 microns is the size of...
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2007-09-25 - Null Hypothesis – what is a significant...

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