British Social Attitudes Survey Experiment, 2025

<p><strong>Background</strong><br>The British Social Attitudes (BSA) survey series began in 1983. The series is designed to produce annual measures of attitudinal movements to complement large-scale government surveys that deal largely with facts and behaviour patterns, and the data on party political attitudes produced by opinion polls. One of the BSA's main purposes is to allow the monitoring of patterns of continuity and change, and the examination of the relative rates at which attitudes, in respect of a range of social issues, change over time. Some questions are asked regularly, others less often. Funding for BSA comes from a number of sources (including government departments, the Economic and Social Research Council and other research foundations), but the final responsibility for the coverage and wording of the annual questionnaires rests with NatCen Social Research (formerly Social and Community Planning Research). The BSA has been conducted every year since 1983, except in 1988 and 1992 when core funding was devoted to the British Election Study (BES).<br><br>Further information about the series and links to publications may be found on the NatCen Social Research <a title="British Social Attitudes" href="https://natcen.ac.uk/flagship-surveys">British Social Attitudes</a> webpage.</p>
<p>The <span style="font-style: italic;">British Social Attitudes Survey, 2025</span> ran an incentive experiment to determine what effect, if any, differential incentives have on improving sample composition. Half the sample were offered a flat £15 conditional incentive, while the other half were provided conditional incentives of between £10 and £20 depending on the IMD quintile of their address. This dataset allows researchers to analyse the impact differential incentives had on the achieved sample profile across a range of different metrics.</p>