Justo Manrique

Demand for food commodities by income groups in Indonesia

An analysis of the structure of demand was performed on household data, classified into income groups for urban Indonesia. A demographically augmented linearized almost ideal demand system was used to estimate the structural parameters of the demand equations. Endogenous switching regression techniques yielded unbiased and consistent demand parameter estimates for the low-income group, which had a large number of zeros for some food groups. Standard seemingly unrelated equation techniques were used to estimate the demand parameters for the other income groups. The results showed demands for the medium to high- and high-income households to be responsive to prices, income and demographic variables. Demands for the medium to low-income households were responsive to income and prices only. Demands for low-income households were responsive to income and prices of rice and fish only.

Spanish household demand for convenience meat products

Spain is currently experiencing changes that have influenced its food markets. These changes affect the selection and purchase of convenience goods in Spain. Spanish household expenditures for convenience meats are modeled in a two-stage process, explicitly accounting for the value of womens time. The empirical evidence shows that the value of womens time, income, and household demographic variables are all important determinants of both participation and expenditures on convenience meat goods. The article concludes that large, high-income families in which both the man and woman work are more likely to consume convenience meat goods and also to spend more than others.