[11] Public Opinion.pdf

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Department
Government and Politics
Course
GVPT 170
Professor
Patrick Wohlfarth
Semester
Fall

Description
[11] Public Opinion Saturday,November 16,2013 7:19 PM Public Opinion Definition of public opinion Measuring public opinion How is public opinion formed? • psychologically how public opinion is formed How informed is the public? • consequences of public opinion in different political processes • importance of the public opinion How responsive is the government to public opinion? How responsive should we want the government to be to public opinion? “Those opinions held by private persons which governments find it prudent to heed.”--V.O.Key Measuring Public Opinion Political science terminology: • Micro vs.macro • micro-individual thinking • macro-public as one singular entity • Dynamic vs.static -the role of public opinion • static-one fixed point in time • dynamic-focus on how public opinion change over time and how does the change affect political process Population vs.sample • draw a sample in a right way that accurately represents the entire population that we have chosen • your population can be any group of people that you care about How to get reliable results? • Randomness is critical • randomness is the first requirement • Good sample size • Ideally,at least 1200-1500 respondents • after get pass 1500 the payoff starts to decline-cost/benefit Randomness Every item (or person) selected from a group (or population) should have an equal probability of being selected in the sample. Random? • Volunteers? • volunteerism problem-if you don't raise your hand I can't choose your hand; people who raise their hand is different from people who do not raise their hand • Every fifth person? • pollster-a prior decided to exclude the forth people • sitting practices-because your friend is sitting next to you she can't be chose • Draw names out of a hat? • if your paper is smaller you have little chance to get selected • maybe I prefer to grab in the right side of the hat Potential Measurement Problems Lessons from the Literary Digest • 1932–FDR vs.Hoover -> sending people postcards to poll in car registration phone books • 57% to 40%--popular vote • 89% to 11%--electoral vote • 1936–FDR vs.Landon -> see that worked,sending people postcards again -> the Landon prediction got really wrong -> if you don't have a car/phone you can't get selected and working class people can't be selected.Wrongly representing.Flawed. • 61% to 37%--popular vote • 99% to 1%--electoral vote • Landon only won 8 electoral votes (ME & VT) • Problems? • Need more than sheer numbers • though you have big samples size you need to be random in the first place-if you have a bad sample the size will not mean
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