Treffer: Boolean analysis of questionnaire data.

The principle of Boolean analysis is to look for entailments between variables in a questionnaire. If all the respondents answering "yes" to the question X answers "yes" to the question Y, we note the entailment X → Y. Boolean algebra generalizes this approach. A questionnaire of n binary variables generates a set of 2n possible patterns of response. These patterns generate a Boolean algebra. If only some of the possible patterns are present, the bipartition in this set defines a Boolean equation, the solutions of which are entailments. Usually we use approximations of this structure to analyse a questionnaire. A presentation of the method is given here with application to sociological data. [ABSTRACT FROM AUTHOR]

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