According to TST, what is a major function of dreaming?

• A. To practice dealing with threats that were common in our ancestral environment
• B. To process social relationships
• C. To rehearse future adventures
• D. To regulate body temperature

Answer: (A)

Threat Simulation Theory argues that dreaming’s main function is to rehearse responses to threats that would have been common in our ancestral environment. By vividly simulating dangerous situations while asleep, the brain practices recognizing danger, evaluating possible actions, and initiating defensive responses, which can improve performance in waking life. This is why dream content often centers on threat and pursuit. Other ideas, like processing social relationships or rehearsing future adventures, don’t capture the primary mechanism described by the theory, and regulating body temperature isn’t proposed as a dreaming function.