Mixed Mode Experiment (LISS Core Study)

This study is divided into three parts and combines mixed-mode experiments with other experiments that were incorporated in the questionnaires.In Mixed Mode I, the results of telephone interviews (CATI) are compared to those of an Internet questionnaire (CAWI).Mixed Mode II also consisted of CATI and CAWI versions, but only the internet survey can, for the moment, be disseminated.Mixed Mode III is a repeated measure of the internet version of Mixed Mode I.