Spendthrift or Tightwad: It's Genetic! and PNC

I thought this article to be most appropriate at this time of year if only to rationalize your holiday shopping habits.

Design of Desire
http://americanradioworks.publicradio.org/features/design/a1.html

and

Christmas Price Index--How much have the 12 gifts of Christmas increased since last year.
http://www.pncchristmaspriceindex.com/