Iso principle

We used a sadness induction to induce a sad mood with a movie clip; afterwards we divided our participants into four groups, each was listening to two pieces of music: happy-happy music; sad-sad music; happy-sad music; sad-happy music. During the experiment, emotional reactions were monitored.本研究借助电影片段开展悲伤情绪诱发操作，以诱导被试产生悲伤心境；随后将被试划分为四组，每组聆听两段音乐，分别为快乐-快乐型、悲伤-悲伤型、快乐-悲伤型以及悲伤-快乐型音乐。实验过程中，对被试的情绪反应进行监测。