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The Perils of Periodical IndexesSome Problems in Constructing Samples for Content Analysis and Culture Indicators ResearchThis article is about a topic neglected in the social science literature on content analysis and culture indicators methodologyproblems in using periodical indexes to construct research samples. The author briefly identifies and discusses reasons why article headlines located through indexes' subject categories can prove to be misleading indicators and then turn to the methodological difficulties arising from historical and idiosyncratic changes in index subject category headings and subheadingsdifficulties particularly relevant to longitudinal research. The author argues that researchers using an index's subject categories should test not only for category longevity but also for category coherence and consistency over time. The use of oversampling, cross-references, and other devices is suggested as a means to correct or compensate for hidden inaccuracies in index classification and to construct purposive samples for analytic comparisons.
Communication Research, Vol. 21, No. 6,
698-716 (1994) This article has been cited by other articles:
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