IOE - Faculty of Education and Society


To mix or not to mix: a longitudinal perspective

16 November 2016, 12:00 pm–1:00 pm


Event Information

Open to



Room G02, 55-59 Gordon Square, London WC1H 0NU

Mixing different modes of data collection such as face to face, telephone and web is becoming a standard procedure in most survey agencies.

This approach is also becoming relevant for longitudinal studies and already a number of the large longitudinal studies in the UK have either incorporated a mixed mode design or are planning to do so in the future.
This presentation will start by highlighting some of the special characteristics of longitudinal studies and how they can interact with the use of a mixed mode designs. It will then highlight the impact of mixing modes on data quality, namely reliability and validity. Finally, it will show how the mixed mode design can influence one of the key statistics for longitudinal studies: estimates of change. The talk will end with a discussion of preliminary recommendations and areas for future research.

Presented by: Dr Alexandru Cernat
This event is free and open to all.
Contact Terry Ng-Knight - terry.ng-knight@ucl.ac.uk