Here Bergh and Henrekson are talking about correlation, but what about causation?

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The goal is to get voters to think, "I don't care what they said because the person is not credible, " Vanden Bergh said.

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Professors Don Bergh from the University of Denver and Patrick Gibbons from University College Dublin set out to examine exactly this question.

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Taxation is perhaps the most obvious (Bergh and Henrekson 2010).

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Vanden Bergh says truly fresh and exciting ads are rare.

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In a conference call, Van den Bergh wouldn't say if private investors had been approached, and denied he was trying to keep the company from being taken over itself.

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The estimates are roughly in line with those from panel regressions on advanced economies in the EU15 and OECD countries for periods from 1960 or 1970 to 1995 or 2005 (Bergh and Henrekson 2010 and 2011).

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Professor BRUCE VANDEN BERGH (Advertising, Michigan State University): There's this feeling, I think, that if real people, so to speak, create these ads, they will be fresher, they - maybe they'll get lucky and they'll be more insightful.

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