For Every Event There is a Time (and a tie, a black tie usually)

I wonder if there is any scientific research on the quality of photos based on whether the photographer is wearing a tie or not. Well if there isn't yet, let me be the first to volunteer. Here are some of my would be submissions for the "wearing a tie" portion of the of the contest. Images are from the 2008 Hispanic Business Entrepreneur of the Year and Woman of the Year Award ceremonies.