According to this theory, people are more attracted to and want to be with others who have similar characteristics and levels of attractiveness as themselves.

BBC: NEWS | Health | Couples 'having plastic surgery'

Nevertheless, due primarily to the negative impressions many people have about so-called "trailer parks, " the value of a manufactured home is less than a third of a comparable site-built home, even when variables such as neighborhood, structural characteristics and geography are controlled, according to an analysis published in the Journal of Real Estate Research.

WSJ: 'Luxurious' Mobile Homes?

According to Emanuel, tailoring medical treatments to individual characteristics of each patient is both overly optimistic and cost-prohibitive.

CNN: Is personalized medicine a myth?

It analyzed the largest bank holding companies in terms of total assets according to the National Information Center, a repository of financial data and institution characteristics collected by the Federal Reserve System.

FORBES: The 15 Best-Paying Big Banks

We only assessed the 20 largest bank holding companies in terms of total assets, as of December 2012, according to the National Information Center, a repository of financial data and institution characteristics collected by the Federal Reserve System.

FORBES: The Big Banks Hiring The Most Right Now