Zentrum für Entwicklungsforschung (ZEF): Neuzugänge
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Measuring income inequality in social networks
(2023-10)We present a new index for measuring income inequality in networks. The index is based on income comparisons made by the members of a network who are linked with each other by direct social connections. To model the ... -
Drought Shocks and Labor Reallocation in Rural Africa: Evidence from Ethiopia
(2023-10)We study how rural households in Ethiopia adapt to droughts through labor reallocation. By using three waves of panel data and exploiting spatial-temporal variations in drought exposure, we find that households reduce ... -
Can altruism lead to a willingness to take risks?
(2023-10)I study attitudes towards risk taking in cases where a person relates to others positively, namely altruistically. This study is needed because it is unclear how altruism influences the inclination of an altruistic person ... -
Farmer-friendly delivery of veterinary services: Experimental insights from the Kenyan dairy sector
(2023-09)Poor health conditions of livestock cause sizeable losses for many farmers in the Global South. Veterinary services, including vaccinations, could help but often fail to reach farmers under typical smallholder conditions. ... -
Impacts of supermarkets on child nutrition in China
(2023-06)In many developing countries, food environments are changing rapidly. One emblematic trend is the proliferation of supermarkets and other modern retailers. While changing food environments likely influence the types of ... -
Why do rural people temporarily migrate to other rural areas?: Insights from northern Bangladesh
(2023-06)Migration from rural to urban areas is common in many low- and middle-income countries. However, temporary migration from rural to other rural areas also occurs and is not well understood. We explore what drives rural ... -
E-commerce improves dietary quality of rural households in China
(2023-06)E-commerce is gaining importance in the food sector of many countries, and its potential influence on people’s access to food and dietary choices is yet to be thoroughly investigated. In this study, we analyze data from a ... -
On a tendency in health economics to dwell on income inequality and underestimate social stress
(2023-04)Social stress can cause physical and mental harm. It is therefore not surprising that public health policy makers have sought to identify and implement policies aimed at tackling this social ill. A frequently prescribed ... -
Agricultural commodity prices, governance, and land supply in the Tropics
(2023-04)Sustainable use of land resources is at the core of the bioeconomy, and it is of central importance for development in the coming decades. The United Nations Sustainable Development Goals reflect this aspect of development ... -
Mind your language: Political discourse affects deforestation in the Brazilian Amazon
(2023-03)Land users make decisions in an increasingly dynamic environment. Changes in expectations are driven by market and non-market factors, but research on market related drivers of land use change so far dominates in the ... -
UN Food Systems Summit 2021 – What Role Science and Innovation in the Summit and in Countries’ Plans and Why?
(2023-01)The UN Food Systems Summit 2021 was different from all six previous food summits held in the past eight decades. New features of this Summit included the fact that it was anchored in the Sustainable Development Goals, ... -
A pure theory of population distribution when preferences are ordinal
(2023-01)We model an environment in which individuals prefer to be in a space in which their rank is higher, be it a social space, a geographical space, a work environment, or any other comparison sphere which we refer to in this ... -
The evolving role of farm and off-farm jobs in rural Africa
(2024-06)Livelihood sources in rural Africa are diverse and dynamic. Using recent primary data from four African countries — Kenya, Namibia, Tanzania, and Zambia — we consider regions with different conditions related to climate, ... -
Cost of Ending Hunger – Consequences of Complacency, and Financial Needs for SDG2 Achievement
(2024-05)This study follows from an earlier assessment carried out by ZEF and FAO in 2020, which identified policy actions and investments needed to achieve SDG2 by 2030. The 2020 study used a marginal abatement cost curve (MACC) ... -
Private service provision contributes to widespread innovation adoption among smallholder farmers: Laser land levelling technology in northwestern India
(2024-05)This study investigates key institutional factors promoting the adoption of laser land levelling (LLL), a technology that has gained wide popularity among farmers in northwestern India despite being indivisible. The main ... -
Rank, stress, and risk: A conjecture
(2024-05)A perception at the core of studies that consider the link between social rank and stress (typically measured by the so-called stress hormone cortisol) is that the link is direct. Examples of such studies are Bartolomucci ... -
Temporary migration decisions and effects on household income and diets in rural Bangladesh
(2024-05)Temporary migration is a widely observed phenomenon among poor rural households, mostly related to agricultural seasonality. However, household preferences for temporary migration in comparison to longer-term migration, ... -
The merger of populations as a revision of comparison space: Repercussions for social stress and income inequality
(2024-04)The merger of populations expands the comparison space of incomes. As a result, measures of the income-based social stress and of the income inequality of the constituent populations need to be replaced by new measures. ... -
How kinship and marriage customs influence nutritional outcomes among males and females
(2024-04)Malnutrition in its various forms is a serious problem in many countries, contributing to human suffering, large healthcare costs, and hampered economic and human development. While various policies to reduce malnutrition ... -
The modification of social space as a tool for lowering social stress
(2024-03)The social stress experienced by an individual from having a low relative income or from having a low income-based rank is a derivative of the individual’s location in social space, and is the outcome of unfavorable ...
