Article by Timothy Taylor: “When most people think of “experiments,” they think of test tubes and telescopes, of Petri dishes and Bunsen burners. But the physical apparatus is not central to what an “experiment” means. Instead, what matters is the ability to specify different conditions–and then to observe how the differences in the underlying conditions alter the outcomes. When “experiments” are understood in this broader way, the application of “experiments” is expanded.
For example, back in 1881 when Louis Pasteur tested his vaccine for sheep anthrax, he gave the vaccine to half of a flock of sheep, expose the entire group to anthrax, and showed that those with the vaccine survived. More recently, the “Green Revolution” in agricultural technology was essentially a set of experiments, by systematically breeding plant varieties and then looking at the outcomes in terms of yield, water use, pest resistance, and the like.
This understanding of “experiment” can be applied in economics, as well. John A. List explains in “Field Experiments: Here Today Gone Tomorrow?” (American Economist, published online August 6, 2024). By “field experiments,” List is seeking to differentiate his topic from “lab experiments,” which for economists refers to experiments carried out in a classroom context, often with students as the subjects, and to focus instead on experiments that involve people in the “field”–that is, in the context of their actual economic activities, including work, selling and buying, charitable giving, and the like. As List points out, these kinds of economic experiments have been going on for decades. He points out that government agencies have been conducting field experiments for decades…(More)”.