The Impact of Mixing Modes on Reliability in Longitudinal Studies

Alexandru Cernat

Sociological Methods & Research, 2015, vol. 44, issue 3, 427-457

Abstract: Mixed-mode designs are increasingly important in surveys, and large longitudinal studies are progressively moving to or considering such a design. In this context, our knowledge regarding the impact of mixing modes on data quality indicators in longitudinal studies is sparse. This study tries to ameliorate this situation by taking advantage of a quasi-experimental design in a longitudinal survey. Using models that estimate reliability for repeated measures, quasi-simplex models, 33 variables are analyzed by comparing a single-mode CAPI design to a sequential CATI-CAPI design. Results show no differences in reliabilities and stabilities across mixed modes either in the wave when the switch was made or in the subsequent waves. Implications and limitations are discussed.

Keywords: longitudinal survey; mixed modes; measurement models; reliability; quasi-simplex models; latent Markov chains; CAPI; CATI (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:sae:somere:v:44:y:2015:i:3:p:427-457

DOI: 10.1177/0049124114553802

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