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U.S. President Barack Obama signature appears on one of several executive orders he signed as part of the administration's new gun law proposals. - 

This final note on the way out today, in which we learn that size really does matter.

A study out of the University of North Carolina says CEOs who have big signatures are more likely to over-spend and have lower sales growth and revenues.

It's a psychological thing, apparently. Big signatures are evidence of narcissism, which in the executive capacity can be detrimental to corporate health.

Interestingly, big-handwriting CEOs tend to have above-average compensation.

Follow Kai Ryssdal at @kairyssdal