Sociology 2206A/B Lecture Notes - Lecture 4: Predictive Validity, Likert Scale, Guttman Scale
3 Oct 2016
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The process of creating measurable concrete variables from abstract concepts. Tends to be more of a concern for quantitative researchers. Timing- you can more in depth in qual research & takes longer. Linkage of concepts to data (pre-planned vs. reflective/interactive) Inter-observer reliability: you & a team observe the same thing & all have different perceptions of what was observed. Questions on a test are too hard/too easy not able to get a good measure because the items should be the same level of hardness. Use of most precise (or highest) level of measurement possible. Use of pretests, pilot studies(do a practice study 1st), replication (repeat study over & over) Content validity: get an expert to assess if your question is valid. Criterion validity: involves comparing it with other measures. Concurrent validity: is your measure like other measures. Quantitative variables: continuous variables: variables measured in a continum (ex. Discrete variables: categories of a variable have a beginning & end (ex.
