Conduct a survey to ask questions that help determine participants’ success. Were they able to change their behaviors? For how long have they maintained change? Compared to other programs they may have used, how useful was this program in helping them to change behaviors?

Then you can walk them through parts of the program in chronological order and ask them to think aloud as they review the steps, thinking back on their experiences.

Another approach is to ask participants to keep a diary to record their thoughts as they use the program. You can then review the data with them at the end. We’ve had varying levels of success with this, as the diary adds a burden to their regular schedules. However, if you come up with a good incentive for them to make diary entries, they can provide very rich information.