Wisconsin recall election between Gov. Scott Walker (R) and Tom Barrett (D) enters its last furious week. It is a proving ground for the themes and players of the national election in November, analysts say.
Friggatriskaidekaphobia, or fear of Friday the 13th, is not warranted, studies show. But researchers note some effects – such as lower economic productivity and stock market losses – as a result of superstition-induced changes in people's behavior.