Apparently, Anne Sibert has written an article at VoxEU describing three types of bad behavior committed by bankers that helped produce the crisis:
They committed cognitive errors involving biases towards their own prior beliefs; too many male bankers high on testosterone took too much risk, and a flawed compensation structure rewarded perceived short-term competency rather than long-run results.
I say “apparently” because I can’t get through to VoxEU despite trying three different browsers and two different computers (can’t ping it, either). But there’s a long summary over at naked capitalism.
Everything she says sounds right, although the classification of three behaviors is a little frustrating, because they fall into three different categories. Confirmation bias is just part of the human condition; I’m not sure what we can do about that, short of inventing Cylons (and we know where that leads). Testosterone is part of the male branch of the human condition; so the potential solution is to have more female bankers. And flawed compensation structures are completely human creations, so we can definitely do something about them.