A Mood Condition (3: positive, negative, neutral) × Mood Rating (2: valence and arousal) linear mixed-effects model showed a significant main effect for Mood Condition (p < 0.001) and Mood Rating (p = 0.03), as well as a significant interaction between these two factors (p < 0.001). Planned follow-up paired t-tests indicated that, as expected, valence ratings following the negative mood condition were significantly lower than the neutral mood valence ratings (t = −7.14, p < 0.001) and the positive mood valence ratings (t = −7.46, p < 0.001), with positive mood valence ratings also significantly higher than the neutral mood valence ratings (t = 2.53, p = 0.02). Both negative and positive arousal ratings were higher than those for the neutral mood condition (t = 2.85, p = 0.01 and t = 6.44, p < 0.001, respectively). Contrary to expectations, positive mood arousal was significantly higher than negative mood arousal (t = 2.60, p = 0.02).
