So I ran an experiment but my approach to analysing it has been criticised and I am trying to re-analyse the data but I am confused as to which methods to use.
I have 3 groups (a, b,c) where a is the control.
I asked each participant in each group to complete a test 3 times.
The first and last test is completed equally for all groups but the environment for the second test changes for b and c (b=distracting environment and c=very distracting environment.)
After each test I take 3 performance based measures from the application (ratio data) and I take 7 measures from a subjective questionnaire with a rating from 0-20 (technically ordinal data although some use it as interval).
I am trying to determine 1) the effect on performance and subjective ratings of the environment and 2) the relationship between the performance and subjective ratings given the environment.
Can anyone suggest a good method to analyse this data?
I have the data in SPSS v20 but I'm having difficulty analysing it and also comparing parametric and non-parametric data simultaneously...???