ed to use such problem-focused strategies as studying---a guaranteed way to reduce the potential problems. After the exam, when their fates were sealed, if they sought out others, it was usually for emotional support. РLike other animals, humans have always been safer in groups. Besides physical protection, people provide emotional support that can reduce the psychological and physiological symptoms of stress. A lack of support can increase our susceptibility(敏感性) to illness. For instance, short-term loneliness is associated with a decrease in immune response(免疫应答). In contrast, people who have strong social ties are usually more resistant to disease. For instance, after being diagnosed as having a life threatening disease, married people are likely to survive longer than unmarried people.
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