Liz,
I got the experiment form when completing Session 7 of hte CBT program. You use the form when planning an trip outside. Part 1 is to be completed before the experiment. You write down what exactly you plan to do for an activity, and what you predict your behaviours, feelings and thoughts will be, along with rating your main feeling or emotion. Part 2 of the form is to be completed after the experiment. You write down what you actually did and what happened with your behaviours, feelings and thoughts and rate your main feeling or emotion after the experiment. You also write down the results of your experiment, what those results mean and if you will repeat the experiement, if you should make changes and that are those changes. I find it extemely useful. For example, I had planned on going on the bus last week but I chickened out. This week I used the experiment form and I knew I had to do it. It was an incentive for me to go outside.
I hope this helps,
Sharon