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Created: July 24, 2002
Latest Update: July 24, 2002
jeannecurran@habermas.org
takata@uwp.edu
Validity
Teaching Essay Copyright: Jeanne Curran and Susan R. Takata and Individaul Authors, July 2002.
"Fair use" encouraged.By William M.K. Trochim. Cornell University. Our thanks to Prof. Trochim for making this material available on the Web. Although I will not be teaching a methods course this year, I would very much like to include this work in our other courses. Notice also that Prof. Trochim has a Research Methods book available through Atomic Dog Publishing. Links added July 24, 2002
- Measurement Validity Types
- The Idea of Construct Validity
- Convergent and Discriminant Validity
- Threats to Construct Validit Note particularly The "Social" Threats to Construct Validity" at the end of the file. These are especially important for us. And Trochim does a good job of explanation here. By the way, the Cook and Campbell book he mentions is a classic in this field. jeanne
- The Nomological Network
- Multitrait-Multimethod Matrix
- Pattern Matching for Construct Validity
- Concept Mapping Notice the similarity here of concept mapping to what we are calling conceptual linking. Trochim is giving you a quasi-quantitative technique for explaining the linkage.
The Research Methods Knowledge Base by William Trochim, Ph.D., Cornell University. Students may obtain this text online for roughly $20. That may be the cheapest review book you can get. I reviewed the book online. Good section on scaling. Gives you a reasonable review of Guttman, Likert, and Thurstone scaling techniques. Also does some pretty good review of validity. That's an area you might need to review before comprehensive exams. Written in everyday English. Sample quizzes available. Lots of vocabulary links, so you can review the meaning of terms you've forgotten. It claims interactivity, but that's kind of falxe. It's really just pretty much a text; about all you can do with it is use it as you would a hardcopy text. But if you're computer literate, it looks like a good deal. Paperback copies are available, but then it gets expensive again. jeanne Link added July 24, 2002.