Here - Tilburg University

Author and presenter
Nieuwenhuyze, Jorre van; Catholic University, Leuven
Title
Evaluating mode effects on moments of continuous variables in mixed mode
data
Abstract
Mixed mode surveys are surveys where data of different respondents is
gathered by different survey modes. To research the quality gain of mixed mode
surveys relative to single mode surveys, selection effects between the modes
should be evaluated. Nevertheless, direct estimation of selection effects is
difficult because they are completely confounded with measurement effects of
the modes. This paper first discusses the shortcomings and problems of the
common methods to disentangle mode effects reported in the existing literature.
Next, it discusses a recent technique which avoids the former problems and
which can be used as an alternative method within certain circumstances. This
paper aims to broaden this technique to mode effects estimations on the
moments of continuous variables (with special attention to means and
covariances). Data of a mixed mode experiment parallel to the European Social
Survey will be used for illustration.