For my experiment, I tested 3 (virtual reality) scenarios on 82 participants. Each scenario involved 2 vehicles:

Scenario 1 involved 2 automated vehicles;

Scenario 2 involved 1 automated and 1 human-driven vehicle;

Scenario 3 involved 1 human-driven and 1 automated vehicle (reverse order of scenario 2).

For each scenario, I showed the participant the same videos, but only the vehicle types changed. They had to indicate their feeling of safety on a scale of 1 to 4.

I want to know if each scenario is statistically independent of each other, so I can conclude the differences between these scenarios.

I am working with SPSS, but what statistical test should I use?

Thank you in advance.