Are valence and arousal separable in emotional experience?

Area of Science:

• Psychology
• Neuroscience
• Cognitive Science

Background:

• The bipolar valence-arousal model is a key framework in emotion research.
• Understanding the dimensional structure of emotions is crucial for explaining conscious experience.

Purpose of the Study:

• To test the unique contribution of arousal beyond valence in explaining emotional responses to visual stimuli.
• To investigate the predictive power of arousal and valence on physiological arousal (electrodermal activity) and self-reported feelings.

Main Methods:

• Examined item-specific responses to visual stimuli.
• Utilized electrodermal activity (EDA) as a measure of physiological arousal.
• Employed self-report measures for valence (pleasure/displeasure) and arousal.
• Applied Bayesian information criterion for hypothesis testing.

Main Results:

• Self-reported arousal did not uniquely predict EDA when valence was included.
• Arousal showed no advantage over valence in predicting global feelings.
• A small unique component of arousal (1.5%–4% variance) was found for global feelings.

Conclusions:

• Valence appears to be a more dominant dimension than arousal in explaining emotional experiences.
• Findings challenge the unique explanatory role of arousal in the valence-arousal model for visual stimuli.
• Results have implications for emotion research methodology and understanding the conscious experience of emotions.