2012 Random Assignment Study -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 0.2 0.25 Control TM Group Control TM Group p<.036 At time of pre-test and post-test, students filled in the Pittsburg Sleep Quality Index. Students reported their sleep in the following way: Very Bad, Fairly Bad, Fairly Good, Very Good. The TM Group reported significant improvement in their sleep.