They performed a mathematical test designed to be stressful, completed a public speaking exercise about something emotionally provocative, held an arm in ice water, and had a blood pressure cuff inflated around an arm, which gradually causes a dull ache.

• 他们进行一个被设计成令人感到有压力的数学测试，完成一个在公共场合进行的煽情性语言测试，再把一个手臂放入冰水中，而后用一根血管增压带绑住手臂，以此能够渐渐让人感到疼痛。