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1 results

  • Retrospective Questions and Correlations

  • Dirk Sikkel, Gerard Jelierse
  • Journal:
    Psychometrika / Volume 52 / Issue 2 / March 1987
    Published online by Cambridge University Press:
    01 January 2025, pp. 251-261

  • In survey research it is not uncommon to ask questions of the following type: “How many times did you undertake action a in reference period T of length τ?.” The relationship is established between τ and the correlation of the number of reported actions with some background variable. To this end it is assumed that the process of actions satisfies a renewal model with individual heterogeneity. Also a model has to be formulated for possible recall effects. Applications are given in the field of medical consumption.