Goal setting theory suggests that goals enhance motivation, they should be specific, and at a level of difficulty that is challenging but attainable.

目标设置理论认为，明确的、有一定难度、具有挑战性但又能够达到的目标能够增强行为动机。

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They research public journalism from many aspects, such as public sphere, objectivity, social responsibility theories, and the agenda setting theory and so on.

美国新闻传播学者从公共领域、新闻客观性、社会责任理论、媒介角色以及议程设置等方面对公共新闻运动进行了探讨。

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While I have doubts about the practical application of this theory in a business setting I'm not sure about telling a room full of workers they suck!

我虽然对这个理论在商业环境中的实际运用抱有疑问(我不能肯定我会对满满一屋子的员工讲他们很差会是什么情形！)

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The theory was tested by setting up artificial feeding stations and monitoring whether the bees' dances did describe where the food was, according to von Frisch's rules.

BBC: NEWS | Science/Nature | Waggle dance leads bees to nectar

Another theory suggests that Kael changed the rules of criticism, setting up a new way of evaluating popular art, without concern for prestige or self-conscious sophistication: in her view, a freshly entertaining or arresting movie was successful, and a movie that seemed tired or required unpacking was a flop.

NEWYORKER: What She Said

The theory (which I support) is that innovation rarely takes place in any formal setting.

FORBES: Getting People Face-To-Face Will Increase Collaboration At Yahoo!