Understanding Society Wave 14 boost trial: experiments with methods of recruiting a probability online boost sample

Publication type

Understanding Society Working Paper Series

Series Number

2022-07

Series

Understanding Society Working Paper Series

Authors

Publication date

September 20, 2022

Abstract:

This paper summarizes experiments carried out as part of a pilot survey that was designed to pre-test different protocols for recruiting a probability-based sample of households via a web survey. The pilot was conducted in October 2021 with an issued sample of 17,304 UK addresses. The pilot included six experiments testing different fieldwork protocols designed to increase response rates. Only two of the six treatments had an appreciable impact: variations in the contact sequence (inclusion of a pre-notification letter and/or an additional (third) reminder) and the offer of an early bird bonus incentive of £10 over a base £20, instead of a uniform £30. 

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