I have some data where participants watched some clips and evaluated them. All participants watched all the clips (within-subjects experiment). There are 3 categories of clips: positive, neutral and negative. Each category consists of 6 different clips. For the evaluation, the participants selected a continuous value between 0 and 1 for each clip. Also, they replied to a question on a 5-point Likert scale (Strongly disagree to Strongly agree).
I would like to see:
If the continuous evaluations given by the participants differ significantly among the 3 categories of clips. And also if the difference is following the levels of the categories, eg. evaluations for negative are lower than neutral and positive, and so on.
If the Likert replies change significantly with respect to the trial number. I have 18 trials/clips in total for each participant; does the Likert score increase or decrease significantly as the trials go by?
If the Likert replies differ significantly between the 3 categories of clips.
I have 22 participants in total.