What's the greatest value an adviser offers? October 09, 2013 by Phillip R. Christenson in Behavior Gap Yes! This article nailed it. The greatest benefit advisers bring is not financial acumen, but keeping investors from making common mistakes. This is the behavior gap all over again... Investors who worked with a financial adviser from 2006 to 2009 outperformed those that didn’t by 4%, and that gap becomes more pronounced in times of economic uncertainty. Investment News: What's the greatest value an adviser offers?