I need to find an article written in 2005 that was posted on the
following link about how Bipolar traders make better traders.
http://news.yahoo.com/s/nm/20050919/od_uk_nm/oukoe_uk_traders;_ylt=AserIv9w6Tbtxlf91tFIzgXtiBIF;_ylu=X3oDMTBiMW04NW9mBHNlYwMlJVRPUCUl

The article was published in June 2005 in the journal "Psychological
Science" under the name "Investment Behavior and the Negative Side of
Emotion"

http://www.blackwell-synergy.com/toc/psci/16/6

The article can be purchased for US$29 through the above link.

However, we might also be able to get it for free if we try.

Doing a google search on the exact title yields many links:
://www.google.com/search?hl=en&safe=off&q=%22Investment+Behavior+and+the+Negative+Side+of+Emotion%22&spell=1

The first link (for me) 
It also appears to be available for download from:
http://www.anderson.ucla.edu/documents/areas/fac/isrp/investment-behavior-psych-.pdf

appears to be an exact copy of the journal article.