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...

We assess whether the probability of a sample member participating at a particular wave of a panel survey is greater if the same interviewer is deployed as at the previous wave. Previous research on this topic mainly uses non-experimental data. Consequently, a) interviewer change is generally...

Little is known about the effect of seeking debt advice on borrowers' well-being. To estimate this effect, we designed a randomised encouragement intervention for a new sample of over-indebted people in Britain who had not sought debt advice in the previous six months. Being encouraged to seek...

Using data from a new sample of over-indebted people living in Britain who have not sought debt advice in the previous six months, we estimate the effect of seeking formal debt advice. Our results suggest that there is a negative selection into formal debt advice: people who do seek debt advice...

Using data from a non-mobile-optimised survey in the UK, this paper compares the quality of survey data from mobile devices with different screen size. The findings suggest that data quality mainly differs between small smartphones with a diagonal screen size of below four inches and larger...

The EU's Statistics on Income and Living Conditions (EU-SILC), launched in 2003, was the first micro-level data set to provide comprehensive data on incomes and other social and economic domains over the enlarged EU. This paper draws on two programmes of research to ask how well the EU-SILC has...