Capi: new methodology, new data for the british nrs

The British NRS has changed methodology from CAPI to Double Screen-CAPI (DS-CAPI). In Great Britain this involves presenting all visual prompts to the respondent on a small tablet screen, controlled by a radio link from the interviewer’s separate laptop computer. DS-CAPI opens up many new possibilities for the NRS interview. From October 2002 to September 2003, the British NRS ran a split-sample test of CAPI versus DS-CAPI, in order to analyse the differences in the readership estimates obtained from the two methodologies. This paper describes those data from the test that were available at the time of writing, examining the differences in readership which were observed and discussing various hypotheses to explain those differences.

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