How can you tell when to use a field study instead of a controlled expirement?

2 answers

Thank you for using the Jiskha Homework Help Forum. Here are 2 sites that you must download because they are pdf files:

1. insitu.lri.fr/~mackay/pdffiles/HCI98.Commentary.pdf

2. www.blackwell-synergy.com/doi/abs/10.1111/j.1559-1816.1991...
When the hypoteheses cannot be feasibly verified or contradicted by a controlled experiment, you might do a field study, assuming that one can be set up. Once obtained, results from a field study might be verified by controlled experiments.

I hope this helps a little more. Thanks for asking.