The test consists of three parts:
You'll be shown 12 photos in the first part;
You'll be shown another 12 photos in the second part;
You'll be shown 48 photos in the third part and asked if you saw them in the first part, in the second part - or if you never saw them at all.
When you have finished the third part, your results will be given to you.
http://www.bbc.co.uk/science/humanbody/sleep/tmt/instructions_1.shtml
P.S. I amazed myself by scoring 100% on whether or not I had not seen the pictures in part 3 previously in part 1 or part 2.
