Back to History

Fields Changed

Registration

Field Before After
Abstract I test a theory of spillover formation based on behavioral biases related to the interpretation of RCTs assignment methods. I test a theory of spillover formation based on behavioral biases related to the interpretation of RCTs awareness and assignment methods.
Last Published July 08, 2024 12:39 PM February 11, 2025 04:25 PM
Primary Outcomes (End Points) Demand for information (willingness to pay, contact the extension services), changes in links (networks), ability perceptions, trust, crop yields, technology adoption, agricultural knowledge Demand for information (willingness to pay, contact for extension services' programs, contact for government programs), changes in links (networks), ability perceptions, trust, crop yields, technology adoption, agricultural knowledge, locus of control, life satisfaction, religiosity, confidence, productivity, income, attrition
Experimental Design (Public) I will provide free access to a soil quality test similar to the Soil Health Card for the treatment group within a village. The variation is between villages: I will randomize villages into 1) ambiguous treatment assignment vs visual treatment assignment; 2) high percentage of eligible population into treatment group vs low percentage of eligible population into treatment group; 3) intervention introduced by local organization vs outsider organization I will provide free access to a soil quality test similar to the Soil Health Card for the treatment group within a village. The variation is between villages: I will randomize villages into 1) ambiguous treatment assignment vs visual treatment assignment; 2) high percentage of eligible population into treatment group vs low percentage of eligible population into treatment group; 3) pure control arm: villages where no farmer will be targeted; 4) pure treatment arm: villages where all the farmers are targeted. If resources allow: 5) intervention introduced by local organization vs outsider organization;
Randomization Method Between villages, randomization will be done in the office by a computer (Stata); within villages, randomization will be done by a lottery (visual vs non-visual) Between villages, randomization will be done in the office by a computer (Stata), making sure villages that are less than 5km away from each other are clustered inside the same treatment arm; within villages, randomization will be done by a lottery (visual vs non-visual). The visual lottery consists of removing balls from a bag.
Sample size (or number of clusters) by treatment arms 20 villages into local organization + visual treatment assignment, 20 villages into outsider organization + visual treatment assignment, 20 villages into local organization + non-visual treatment assignment + high percentage of eligible population into treatment group, 20 villages into local organization + non-visual treatment assignment + low percentage of eligible population into treatment group, 20 villages into outsider organization + non-visual treatment assignment + high percentage of eligible population into treatment group, 20 villages into outsider organization + non-visual treatment assignment + low percentage of eligible population into treatment group 35 villages into visual treatment assignment, 35 villages into non-visual treatment assignment 25 villages pure control 25 villages pure treatment
Additional Keyword(s) Spillovers, motivated reasoning, RCTs Spillovers, motivated reasoning, RCTs, awareness
Back to top

Irbs

Field Before After
IRB Name IFMR
IRB Approval Date July 08, 2024
IRB Approval Number IRB00007107
Back to top