Complex sentence: Emotional state, such as the excitement of sport or war, and cognitive factors such as distraction and hypnotic suggestion can significantly affect the intensity of pain or the degree of suffering involved, and people with more social support are significantly less affected by pain.
Split into simpler sentences: Emotional state, such as the excitement of sport or war, and cognitive factors such as distraction and hypnotic suggestion can significantly affect the intensity of pain or the degree of suffering involved. People with more social support are significantly less affected by pain.