Explaining Variation in Child Labor Statistics
A member of the CGIAR Consortium - International Food Policy Research Institute (IFPRI)
World Bank - Development Research Group (DECRG)
Pieter M. Serneels
University of Oxford - Centre for the Study of African Economies (CSAE)
IZA Discussion Paper No. 5156
Child labor statistics are critical for assessing the extent and nature of child labor activities in developing countries. In practice, widespread variation exists in how child labor is measured. Questionnaire modules vary across countries and within countries over time along several dimensions, including respondent type and the structure of the questionnaire. Little is known about the effect of these differences on child labor statistics. This paper presents the results from a randomized survey experiment in Tanzania focusing on two survey aspects: different questionnaire design to classify children work and proxy response versus self-reporting. Use of a short module compared with a more detailed questionnaire has a statistically significant effect, especially on child labor force participation rates, and, to a lesser extent, on working hours. Proxy reports do not differ significantly from a childﾒs self-report. Further analysis demonstrates that survey design choices affect the coefficient estimates of some determinants of child labor in a child labor supply equation. The results suggest that low-cost changes to questionnaire design to clarify the concept of work for respondents can improve the data collected.
Number of Pages in PDF File: 36
Keywords: child labor, survey design, Tanzania
JEL Classification: J21, C81, C93working papers series
Date posted: August 30, 2010
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