Human Psychophysiology Is Influenced by Physical Touch With a “Breathing” Robot

People often physically cling to others when afraid and doing so can downregulate negative emotional experiences (e.g., Coan et al., 2006). However, in some situations, physical touch may fail to downregulate emotional experiences-such as when an individual being touched is physiologically aroused themselves. To test this hypothesis, we built plush robots with motorized plastic ribcages that were manipulated to contract and expand to simulate human breathing patterns. Participants held these robots while we measured their heart rate before, during, and after watching a fear-eliciting stimulus. Consistent with our hypothesis, participants who interacted with robots that exhibited accelerated-breathing patterns experienced a pronounced increase in their own heart rate, compared to participants who held stable-breathing and nonbreathing robots. These results indicate that holding or clinging to others engaged in accelerated breathing may be ineffective or detrimental for downregulating one's own physiological arousal.