Psychophysical
Slowly she realized she wasn't listening to the lecture and her cheeks reddened. She had zoned out again. She tried to focus on the professor who was talking about the psychological and psychophysical effects of interactions in different relationships. Apparently she hadn't missed too much, he was discussing the difference in effects of hugging with a person you just met, an acquaintance, a close friend and a partner. He pointed out that the release of endorphins can be strongest with a person...