Because of the way men evolved they don't cry much, especially in public, and social conditioning reinforces this.

因为男人进化的方式不同，他们哭的不多，尤其在公共场合，而且社会环境强调了这一点。

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Social conditioning reinforces these behaviours in men by teaching them to 'act like a man', 'put on a brave face' and 'boys don't cry'.

而社会制约告诉他们要‘像男人一样行事’、‘男人要有一副自信的面孔’以及“男孩子不能哭’，这愈加强化了男人们的这类行为。

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Smiling at your baby also reinforces this highly pro-social behavior and makes it very likely that your baby will smile at lots of people.

对你的孩子微笑可能也会增强他的这种社交行为，还可能会让你的宝宝对更多人微笑。

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Entrepreneurial and managerial success, in turn, reinforces social success, as they provide the funds for pursuing social causes, e.g.

FORBES: How Companies Become And Stay Great

Social success, in turn, supports and reinforces entrepreneurial and managerial success.

FORBES: How Companies Become And Stay Great

Richer neighbourhoods can afford better schools, which reinforces the growing geographical gap between different social groups.

ECONOMIST: The United States: The rich and the rest | The