Notice: the WebSM website has not been updated since the beginning of 2018.

Web Survey Bibliography

Title A Comparison of CAPI and PAPI through a Randomized Field Experiment
Year 2011
Access date 24.09.2011

This paper reports on a randomized survey experiment among 1840 households, designed to compare pen-and-paper interviewing (PAPI) to computer-assisted personal interviewing (CAPI). We find that PAPI data contain a large number of errors, which can be avoided in CAPI. We show that error counts are not randomly distributed across the sample, but are correlated with household characteristics, potentially introducing sample bias in analysis if dubious observations need to be dropped. We demonstrate a tendency for the mean and spread of total measured consumption to be higher on paper compared to CAPI, translating into significantly lower measured poverty, higher measured inequality and higher income elasticity estimates. Investigating further the nature of PAPI’s measurement error for consumption, we fail to reject the hypothesis that it is classical: it attenuates the coefficient
on consumption when used as explanatory variable and we find no evidence of bias when consumption is used as dependent variable. Finally, CAPI and PAPI are compared in terms of interview length, costs and respondents’ perceptions.

Access/Direct link

Conference Homepage (abstract)

Year of publication2011
Bibliographic typeConferences, workshops, tutorials, presentations