# In a joint op-ed, Professor Matthew Lee offers three solutions to help impact investors reduce the impact of bias

1 Faculty News June 29, 2020 ![Stanford Social Innovation Review Logo 190 x 145](/sites/default/files/styles/246w/public/assets/images/Stanford%20Social%20Innovation%20Review%20Logo%20190%20x%20145.jpg?itok=dMGGFlJP)>

Excerpt from [Stanford Social Innovation Review](https://ssir.org/articles/entry/how_to_overcome_warm_glow_and_other_barriers_to_effective_impact_investment_decisions#) -- "Financial markets run on the often-unspoken assumption that human beings make perfectly rational decisions that drive capital to the highest-performing enterprises. Indeed, the finance field promulgates an image of dispassionate investors who tirelessly comb through opportunities and seamlessly integrate information to optimize their portfolios."

[Read More](https://ssir.org/articles/entry/how_to_overcome_warm_glow_and_other_barriers_to_effective_impact_investment_decisions#)