Table 1.

Summary of findings. Each study tested how well the SC predicted emotional arousal. Studies 1–4 used categorical emotion labels, while study 5 used continuous judgements of emotional arousal. The result column indicates the accuracy of a logistic regression classifier that uses the SC to predict emotional arousal, except for study 5, where we report the β weight associated with the SC for continuous prediction of emotional arousal.

	task	stimuli	emotions	result
study 1	emotion judgement (categorical)	shapes and sounds based on Köhler [20]	angry, sad, excited, peaceful	77–89% accuracy
study 2	emotion expression (categorical)	shapes drawn by participants	angry, sad, excited, peaceful	71–78% accuracy
study 3	emotion judgement (categorical)	procedurally generated shapes (n = 390) and sounds (n = 390)	angry, sad, excited, peaceful	78% accuracy
study 4	emotion judgement (categorical)	natural speech and body movements	angry, sad	86–88% accuracy
study 5	emotional arousal judgement (continuous)	natural speech and body movements	anger, boredom, disgust, anxiety/fear, happiness, sadness, neutral	SC β = 0.76