Psychophysiological emotion measurements aim to identify emotions from physiological changes in muscles (e.g. face), pupils, skin, heart, brains, etc. Expression Think aloud protocol can be used for reporting emotions (real-time verbal self-report) Positive and Negative Affect Schedule (PANAS) (retrospective verbal self-report) Geneva emotion wheel[4] (retrospective verbal self-report) Photographic Affect Meter (PAM)[5] Emotion slider[6] (continuous non-verbal self-report) Sensual evaluation instrument (SEI)[7] (snapshot non-verbal self-report) PrEmo, a new version of EmoCards for assessing emotion[8] (snapshot non-verbal self-report)