161x Filetype PPTX File size 0.06 MB Source: sites.psu.edu
Advantages & Disadvantages Advantages of using surveys: • Respondents can answer large numbers of quesitons rapidly • Large numbers of respondents • With appropriate sampling, you can make broader generalizaitons about much larger populations Disadvantages: • Problems with question formats • Most survey designs do not allow us to assess casual relationships (as in cause & effect) • Unwillingness of people to participate • Having to decide whether results are valid Types of Surveys Cross-sectional • Capture what’s going on at one point in time, i.e. an opinion poll. Trend • Measure the same items over time but draw different samples from the population each time. Panels • Group of individuals is sampled and recruited, and the same folks answer questions over time. Cohorts • Groups of people defined, most typically, by having an event in common, i.e. surveying all female corporate executives born in 1980. Cross-lagged • Measure a dependent variable and an independent variable at two points in time, i.e. asking different campus groups questions about the same controversy. Issues with sampling • Researchers are tasked with the responsibility of making sure that the groups being surveyed are representative, if their aim is to make claims about larger populations. • If sampling is being done on a smaller scale, the issue of accurate representation is still a factor, but it stems more from sampling size. For ex. if you’re polling PSUGA students on an issue and only get 35 respondents to participate, it would be irresponsible to utilize that data as representing the entire student body’s position. On Writing Questions • The function of question formats is to clarify both the question and response options as far as possible for respondents while giving researchers relevant categories of answers that will help them analyze results. • Some questions are easier than others for respondents to answer and so researchers need to spend a lot of time crafting questions that are both intelligible and appropriate to their needs. Question Formats • Open-Ended – allow respondents to answer in their own words. Advantage is insights not gleaned with highly structure questions. Disadvantage is that they are extremely time consuming to code • Dichotomous – force respondents to choose one of two possible answers. Advantage is simplifying data coding and analysis. Disadvantage is over-simplification. • Multiple-Choice – provide several possible answers • Likert Scale – statements (not questions) with which respondents are asked to locate their level of agreement, e.g. between “strongly agree” and “strongly disagree.” • Semantic Differential Scale – present a topic or concept followed by scales anchored at each end by words that have opposite meaning, e.g. “strong” and “weak.” Researchers need to make sure that the words used best capture opposite sentiments
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