TABLE 1.

Mean valence and arousal ratings (standard deviation in parenthesis, 95% confidence intervals in square brackets) of the picture categories.

	Pleasant	Neutral	Unpleasant
Valence ratings	6.61 (0.72) [6.40; 6.82]	5.02 (0.26) [4.94; 5.09]	2.51 (0.72) [2.31; 2.73]
Arousal ratings	4.56 (1.19) [4.22; 4;90]	2.04 (1.03) [1.75; 2.36]	5.79 (1.41) [5.36; 6.19]