Nonexperimental methods, such as regression modeling or statistical matching, produce unbiased estimates if the underlying assumptions hold, but these assumptions are usually not testable. Most studies testing nonexperimental designs find that they fail to produce unbiased estimates, but these...

Randomized controlled trials (RCTs) are considered the gold standard in estimating treatment effects. When an RCT is infeasible, regression modeling or statistical matching are often used instead. Nonexperimental methods such as these could produce unbiased estimates if the underlying...

Using data from Mathematica's experimental evaluation of charter schools, this methodological study examines the validity of four different comparison group approaches to test whether these designs can replicate findings from a well-implemented random assignment study.

Using data from Mathematica's experimental evaluation of charter schools, this methodological study examines the validity of four different comparison group approaches to test whether these designs can replicate findings from a well-implemented random assignment study.

Nonexperimental methods, such as regression modeling or statistical matching, produce unbiased estimates if the underlying assumptions hold, but these assumptions are usually not testable. Most studies testing nonexperimental designs find that they fail to produce unbiased estimates, but these...

This working paper used a randomized controlled trial to estimate the effectiveness of a U.S. government-funded farmer assistance program that trained more than 50,000 farmers throughout Armenia. Training did not increase household income or consumption, or affect mediating outcomes, such as...

This report presents baseline data from the tertiary canal survey, which provides an understanding of the current irrigation and agricultural situation in rural Armenia, as well as context for the impact evaluation of the Millennium Challenge Corporation’s infrastructure improvement project in...

This report evaluates four components of an agricultural intervention in Armenia, the Water-to-Market Activity. It assesses on-farm water management, high-value agriculture training, credit to qualifying farmers, institutional training, and post-harvest processing and marketing.

This report evaluates four components of an agricultural intervention in Armenia, the Water-to-Market Activity. It assesses on-farm water management, high-value agriculture training, credit to qualifying farmers, institutional training, and post-harvest processing and marketing.

This working paper used a randomized controlled trial to estimate the effectiveness of a U.S. government-funded farmer assistance program that trained more than 50,000 farmers throughout Armenia. Training did not increase household income or consumption, or affect mediating outcomes, such as...