Relationship between Income Change and Consumption Change in Rural Households in Developing Countries

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K20604
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0604:Agricultural economics and rural sociology, agricultural engineering, and related fields
• Research Institution: Japan International Research Center for Agricultural Sciences
• Principal Investigator: Ozaki Ryosuke 国立研究開発法人国際農林水産業研究センター, 社会科学領域, 任期付研究員 (80965244)
• Project Period (FY): 2022-08-31 – 2024-03-31
• Keywords: 開発途上地域 / 消費行動 / 所得変動

Outline of Final Research Achievements

This study aims to explore the relationship between the causes of changes in income and changes in consumption expenditures among rural farm households in developing countries, and to examine the existence of sources of income that have a relatively greater impact on expenditures on goods that contribute to improved nutritional status. Household surveys were conducted in Madagascar, where malnutrition is one of the most serious problems in the world. The results of the analysis of changes in income and consumption of about 550 households showed that off-farm income, excluding agricultural wages, and income from the sale of rice are positively associated with consumption expenditures on meat and fish, which are sources of nutrients that are particularly lacking in the study area, while income from the sale of crops other than rice did not show the significant association. These results suggest that the impact of income on consumption expenditure differs depending on the source.

Free Research Field

開発経済学

Academic Significance and Societal Importance of the Research Achievements

サブサハラアフリカ地域農村部の貧困削減と栄養不良状態改善は持続的開発目標の達成に極めて重要である。同地域の中で特に高い貧困人口と栄養不良人口を抱えるマダガスカルにおいて、家計調査に基づく分析を行った。農家所得が複数の所得源から構成されていることに着目し、所得の種類によって調査対象地域において特に不足している栄養素を含む食品（肉類・魚類）の消費支出に与える影響が異なることを明らかにした。