Robert Yerkes and John Dodson worked as psychobiologists in the beginning of the previous century.

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The notion that moderate anxiety can be beneficial goes back at least to 1908, when Harvard psychologists Robert Yerkes and John Dodson posited that arousal (as they called it) enhances performance but only to a point.

WSJ: Anxiety Can Bring Out the Best

Agent John Dodson, after nearly a year of harassment, including being given menial assignments and being barred from areas of the ATF building in Phoenix, is in the process of trying to sell his home in Arizona so he can transfer to South Carolina.

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Dennis Burke, who was U.S. Attorney for the state, admitted to senior Justice Department officials in 2011 that he had leaked to the media the memo written by John Dodson, an agent with the Bureau of Alcohol, Tobacco, Firearms and Explosives, according to the Justice Department inspector general's finding on Monday.

CNN: Report says prosecutor behind 'Fast and Furious' leak