This is an article in the Op-Ed section of Sunday's New York Times.  It's about Holmes' powers of concentration and research that studied techniques like those he used to solve crimes.  The author of the article wrote a book about Sherlock Holmes that will be published next year.

Link to the newspaper article:
http://www.nytimes.com/2012/12/16/opinion/sunday/the-power-of-concentration.html?pagewanted=2&ref=todayspaper&pagewanted=all

Link to the book:
http://www.mariakonnikova.com/book/