We expect depressed people to score as depressed on the BDI and as depressed on the CES-D 4. Discriminate Validity = scores do not correlate with tests that are different a. Ex. Want to test if the BDI really measures depression so we give depressed ppl the BDI and a perceived physical test score bc they don’t have anything to do with each other i. We would want to find a weak correlation bw these tests What does it mean to use multiple measures (and methods) and why is this useful? It is wise to assess a variable of interest from multiple perspectives and with the use of different measures of the same DVs and different methodological techniques o No measure is perfect or definitive o If multiple measures show similar outcomes, then we can feel more confident about the relationships at the conceptual level Surveys and observation: CHAPTER 6 What is survey research and two goals/types of survey research—descriptive versus analytic? Survey research = a method of posing questions to people on the phone, in personal interviews, on written questionnaires, or online o With the goal to obtain info about ppl’s characteristics, opinions, attitudes, preferences, and/or behaviors using questionnaires or interviews 1. Descriptive : (frequency claims) determine percentage of population that has a certain characteristic, opinion, behavior, etc. 2. Analytic : (association claims, correlation) what are the relevant variables and how might they be related Three main types of questions we ask? 1. Demographic : patterns of basic life events, experiences, or characteristics a.Ex. how many Tulane students are in the Greek system? 2. Attitudes : evaluative of something a.How do you feel about the food on campus? 3. Behaviors : can be past or future (intention) a.How much did you study for exam 1? b.How much will you study for exam 2?
Double-barreled questions: it asks 2 questions in 1 and has poor construct validity because ppl might be responding to the first half, the second half, or both parts of the question oEx. Do you enjoy living in and going out in New Orleans? Negative worded questions: oDo you think that psych majors shouldn’t be able to get a BA?Ambiguous questions:oHave you ever experienced prejudice?
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