31. Field experiments failed to corroborate this finding.32. However, some research suggests that important differences arise in measuring group polarization in laboratory versus field experiments . 33. Development economists have used field experiments to measure the effectiveness of poverty and health programs in developing countries. 34. Asgrow's research had already shown that the wild plants were highly susceptible to viral disease in field experiments . 35. The participants in a field experiment are unaware that the events they experience are in fact an experiment. 36. A Field Experiment on Labor Market Discrimination . American Economic Review 94 ( 4 ) : 991-1013. 37. Field experiments began in the 1920s with agronomists, who wanted to improve crop yields _ hence the method's name.38. There is a thriving dialogue with experimental economics, which uses laboratory and field experiments to evaluate and inform theory. 39. Some academics dispute the claim that findings from field experiments are sufficient for establishing and testing theories about behavior. 40. In a large-scale field experiment , they sold people souvenir photos from a ride at the park under four conditions.
