PSYC 201W Lecture 7: 201- ch7
23 Jul 2017
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Response rate: represents the % of cases who participate in a survey out of all those who were selected to participate. Likert scale: example of a closed-ended question, and more specifically it is an example of a ranking scale question. Anchor: labeled by a number and verbal statement (e. g. , strongly agree ) items on a scale - 1 (very unimportant), 2 (somewhat unimportant), 3 (neither important nor unimportant), 4 (somewhat important), and 5 (very important). Not a particularly good use of survey data: a test of the causal effect of one variable on another. Limitations of surveys: not well suited for examining cause effect relations, poor sampling (highly misleading results- unrepresentative samples) Nonprobability sampling- convenience sampling (haphazard)- ask patients if they would be willing to take part in a short survey. selected nonrandomly for inclusion in a sample, on the basis of convenience. Interviewer characteristics: the age or gender of the interviewer affects the way the participant responds.
