when comparing pre and post treatment design when do you use a pre-post test with a control group? when to run a post post treatment test with a control group? why do pre treatment tests need to be done what is the best practice when analysing post treatment designs for the study? is it possible for pre-post testing to be used with control and treatment groups what is pre post testing when to test a pre-post treatment-control design what is the difference between a post treatment and a pre treatment when to use a pre-post testing when comparing pre post treatment vs control what is the best practice when comparing pre-post treatment and control designs? what should be used when comparing pre-post treatment and control plans? which type of t-tests is used for pre-post treatment? when to use pre and post test best practice when analysing pre-post treatment-control designs when should a pre-post post-test be used when to use pre post test and control can pre post test with control be duplicated what type of study is a pre post t-test