Hi all,
I’m currently working on a dataset and struggling to properly set up a repeated-measures linear mixed model in SPSS, and I would greatly appreciate your guidance.
In my study, the dependent variable is jump performance. Each participant has four repeated measurements, resulting from a combination of two factors:
• Time: pre and post intervention
• Leg: dominant and non-dominant
So for each subject, I have:
• pre-dominant
• pre-non-dominant
• post-dominant
• post-non-dominant
These conditions are stored in two separate columns: one indicating the leg (dominant vs. non-dominant) and one for time (pre vs. post). My aim is to evaluate whether a specific type of training intervention had an effect on jump performance, considering both leg and time as repeated factors.
When i insert subjcet as random effect i have problem:
In attachment you can find my out results output, and photo about my dataset and how I specify the variables