Does refusal bias influence the measurement of Chinese political trust?

Measurements of Chinese political trust may be inaccurate due to ‘refusal bias’, resulting from unwillingness of people with certain attitudes to take part in surveys. Such bias is especially problematic because researchers usually have little or no information about refusers. Nevertheless, techniques have been developed which allow correction of refusal bias by extrapolating from reluctant or difficult respondents on the basis of various measures of response propensity. Using data from a nationwide survey conducted in China in the winter of 2012/13, this article shows that this type of correction procedure improves the accuracy of measurement of the Communist Party membership rate, and produces significantly lower estimates of trust in the central government/Party leadership, trust in local government and support for the current system of government. Refusal bias is likely to result from the social desirability of expressing political trust and support under authoritarian conditions