From 1997 to 2005, an astonishing 5200 million USD was invested to reduce cocaine production in Colombia, the world's main cocaine producer. However, little is known about the effectiveness of policies targeting coca cultivation. This paper uses a survey-based experiment to evaluate the effects of the two main policies: eradication and alternative development programs.

The authors conducted a field experiment in a protected area to explore the effects of conformity to a social reference versus a comparable, but imposed, suggested donation. By keeping the intrinsic valuation of the good constant, they were able to explore the effect of these two treatments on self image.

This study analyses the determinants of off-farm work participation decisions of farm households in Ethiopia. A bivariate probit model is applied to account for the simultaneity of participation decisions of both male and female members of farm households. The results of the analysis show that human capital variables such as health and training on non-farm activities have a positive effect on the off-farm participation decisions of male members of farm households.

This paper examines the concern for relative standing among rural households in China. We used a survey-experimental method to measure to what extent poor Chinese farmers care about their relative income and found that the respondents cared to a high degree

This paper is about locating sensors in water distribution networks and making inferences on the presence of contamination events based on sensor signals.

The authors looked at risk and ambiguity attitudes among Ethiopian peasants in one of the poorest regions of the world and compared their attitudes to a standard Western university student sample elicited by the same decision task.

Strong risk aversion and ambiguity aversion were found with the Ethiopian peasants, and these attitudes are similar to those of the university students. Testing for the effect of socioeconomic variables on uncertainty attitudes showed that poor health increased both risk and ambiguity aversion.

The authors investigated attitudes toward positionality among rural farmers in northern Ethiopia, using a tailored two-part survey experiment. On average, they found positional concerns neither in income per se, nor in income from aid projects among the farmers. These results support the claim that positional concerns are correlated with absolute level of income of a country.

In previous research, a systematic analytic-deliberative process for public participation in risk ranking was introduced and successfully tested with participants from the United States using heath, safety, and environmental risks.

The design of a sensor-placement scheme capable of detecting all possible contamination events for a water distribution system before consumers are put at risk is essentially impossible given current technologies and budgets.