This research develops a new group-based profit difference model for comparing profit performance at the group level with heterogeneous production technology and currencies. The proposed model can fully measure component effects that contribute to cross-group profit variation and also explicitly...

A moderated regression model ( MRM ) suffers from the correlations of the interaction effect with the main effects. The interaction effect is invariant, but the main effects are not invariant in the MRM and its transformed models. Thus, it is common to examine only the interaction effect. This...

Half of all undernourished women and children in South Asia are not found in the bottom 40 percent of wealth-poor households. This paper quantifies the extent to which this inequality in nutritional status arises within households versus between households. In contrast to previous literature, it...