01-对心理科学的批判性思考.ppt

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Statistical Reasoning Our Brand Brand Brand Brand X Y Z 100% 99 98 97 96 95 Percentage still functioning after 10 years Brand of truck Statistical Reasoning Our Brand Brand Brand Brand X Y Z 100% 90 80 70 60 50 40 30 20 10 0 Percentage still functioning after 10 years Brand of truck Statistical Reasoning Mode the most frequently occurring score in a distribution Mean the arithmetic average of a distribution obtained by adding the scores and then dividing by the number of scores Median the middle score in a distribution half the scores are above it and half are below it Statistical Reasoning A Skewed Distribution 15 20 25 30 35 40 45 50 90 475 710 70 Mode Median Mean One Family Income per family in thousands of dollars Statistical Reasoning Range the difference between the highest and lowest scores in a distribution Standard Deviation a computed measure of how much scores vary around the mean Statistical Significance a statistical statement of how likely it is that an obtained result occurred by chance Frequently Asked Questions about Psychology Can laboratory experiments illuminate everyday life? Frequently Asked Questions about Psychology Does behavior depend on ones culture? Culture--the enduring behaviors, ideas, attitudes, and traditions shared by a large group of people and transmitted from one generation to the next Frequently Asked Questions about Psychology Does behavior vary with gender? Frequently Asked Questions about Psychology Why do psychologists study animals? Is it ethical to experiment on animals? Is it ethical to experiment on people? Frequently Asked Questions about Psychology Is psychology free of value judgments? Frequently Asked Questions about Psychology Is psychology potentially dangerous? Myers’ PSYCHOLOGY Chapter 1 Thinking Critically with Psychological Sci

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