Critical review of the paper by Christian Broda, Ephraim Leibtag, and David E. Weinstein The Role of Prices in Measuring the Poor’s Living Standards By Justina Banyt ė
MOTIVATION BEHIND Poor people pay more than rich? > location (Chung & Myers, 1999) > price discrimination (Myers et al., 2009) Poverty rates stayed the same Substitution effect (CPI – static) Is it true?
APPROACH Quantitative chosen Database constructed on the Control variables Regressions run purchases(Nielsen, identified 2005) > measuring elasticity > controlling for the location/store type
RESULTS Poor do pay less! Coefficient [ 0.0108; 0.0088 ]*** > experience of shopping matters > trade-off: leisure vs. bargains > cheaper labour force in poor regions In poorer areas – lower prices Quality effect (1/3) vs. shopping (2/3)
RESULTS REVISITED Questionable approach Interesting topic > Data manipulation? Representative data set > OVB (education, tastes) > Low R 2 (9.29 at the best case) Novel approach Definition of poverty itself (two sided substitution)
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