by Larry Friedman, Ph.D., Chief Research Officer, TNS.
When I was a college undergraduate, I took a class in Advanced Social Science Methodology. One of the books I had to read had the rather imposing title “Unobtrusive Measures: Nonreactive Research in the Social Sciences.” First published in 1966 by Webb, Campbell, Schwartz and Sechrest, the book became a classic text, and has undergone several revisions and stayed in print since then. Continua la lettura
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