Table 1. Participants’ mean valence and arousal ratings (and standard deviations) for the various stimulus categories.

Stimulus category	Valence (SD)	Arousal (SD)
Task 1: Skin/feathers
snake	5.0 (1.4)	3.3 (2.0)
lizard	4.8 (1.0)	3.1 (1.6)
bird	5.6 (1.3)	2.6 (1.3)
Task 2: Partly exposed
snake	4.4 (1.6)	4.3 (2.5)
lizard	4.6 (1.4)	3.7 (2.1)
bird	5.9 (1.5)	2.8 (1.9)

Valence and arousal ratings are based on a rating scale from 1 to 9.