COMM 400 Lecture Notes - Lecture 10: Cluster Sampling, Nonprobability Sampling, Content Validity
2 Apr 2017
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Reliability established by numerical values, measured numerically. Validity accuracy, be consistent with observations, validity implies reliability but reliability does not imply accuracy or validity. Clock, is 10 minutes ahead but time is still valid. Something that is consistent doesn"t mean it is true. Measured by truth, very hard to measure validity. Content validity how good is your content. Criteria related validity how good is your measurements. Construct some model that you are trying to test. Submergence psychological warfare to undermine social order of enemy government. Resistance against hegemony against government content triangulation validity test all types of validity from different angles. External val explain a generalization about a concept. You need more students and from diff colleges and to survey 300-3,000 students. Internal validity - how accurate/good is your research in a small context, the research you conduct can be used elsewhere. -ex: a small survey in class about what we think about comm 400.
