Behrman, Jere R; Deolalikar, Anil B - In: The Review of Economics and Statistics 71 (1989) 4, pp. 666-72
The income elasticity of calories generally is substantially smaller than the income elasticity of food expenditure. One reason may be an increasing concern for food variety as incomes increase. Food variety can be linked with two characteristics of food indifference curves: (1) curvature and...