Evaluate a randomized control trial (RCT). For each of the below examples, briefly discuss [in 3-4 sentences] whether internal validity or external validity might be a concern. 1. World Bank conducts RCT of a program in Indonesia which aims to provide farmers with spot and futures price information by mobile phone. The main objective of the evaluation is to estimate the impact of the intervention on the income and consumption of the farmers. Randomization is done at an individual level. 2. An intervention in the U.S. compared performance contracting in schools to traditional classroom instruction. A comparison of treatment and control schools found no impact on student learning. One of the explanations for this outcome is that the existing teachers were out to show that they could do a better job than those outsiders (performance contractors).
Evaluate a randomized control trial (RCT). For each of the below examples, briefly discuss [in 3-4 sentences] whether internal validity or external validity might be a concern.
1. World Bank conducts RCT of a program in Indonesia which aims to provide farmers with spot and futures price information by mobile phone. The main objective of the evaluation is to estimate the impact of the intervention on the income and consumption of the farmers. Randomization is done at an individual level.
2. An intervention in the U.S. compared performance contracting in schools to traditional classroom instruction. A comparison of treatment and control schools found no impact on student learning. One of the explanations for this outcome is that the existing teachers were out to show that they could do a better job than those outsiders (performance contractors).
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