Question

What one advantage of doing a field experiment instead of a laboratory experiment

Answer 1

It gets you out in the sunshine and fresh air. Then, no matter how the experiment turns out, you get some exercise, you're healthier, and you feel better. Also, there's always a chance that someone may stop and ask what you're doing, and you might make a new friend that way.

Answer 2

Field experiments allow experiments to take place with no confounding variables. They are also very practical.