Hi, i am in the process of planning my dissertation procedure and i have been told to randomise the tests i will be using. My study will consist of two groups, one of which will be a control group. In my study, i will be using 2 tests, one of which will require participants to join numbers and the other will require participants to join dots. Both these tests consists of an easy level and a hard level and both the easy and hard levels consist of four tasks. So in summary,
Test A- Dot Joining (easy)- consists of 4 tasks
Test B- Dot Joining (hard)- consists of 4 tasks
Test C- Number Joining (easy)-consists of 4 tasks
Test D- Number Joining (hard(- consists of 4 tasks
So, i am meant to randomise these. However, i am confused as to whether i am supposed to randomise these for each participant, so that each participant in the group is doing a different tasks or whether it is supposed to be randomised over the period of time i am doing my study (since i am doing a longitudinal study).
Also, all participants in the groups have to do all of the above tests.
I know that randomisation is to avoid practice effects, but i am really confused and i am meant to be starting my research soon, so i really need some help.
Thanks in advance.