Table 1.
Negative Pictures | Ambiguous Pictures | Positive Pictures | |
---|---|---|---|
Mean (SEM) valence | 2.39 (0.08) | 5.19 (0.26) | 7.93 (0.07) |
Mean (SEM) arousal | 5.36 (0.20) | 4.99 (0.18) | 4.96 (0.18) |
Valence scores are based on the normative 9-point scale (1 = very unpleasant, 9 = very pleasant). There was a significant difference between each condition of pictures (F(2, 10) = 1469.44, p < .001, η2 = .95), such that positive pictures were rated as more positive than ambiguous and negative pictures, and negative pictures were rated as more negative than ambiguous pictures (all ps < .001).
Arousal was also based on the normative 9-point scale (1 = low arousal, 9 = high arousal). Arousal was equated across these three conditions (F(2, 10) = 1.56, p = .26, η2 = .10).