The belief you’re already defending

Confirmation bias is the tendency to seek out, interpret, and remember information in a way that confirms what you already believe. It's not a character flaw. It's human nature. But in the workplace, it can be dangerous.

I’ve seen it show itself in many different ways over the years. It shows up when a manager decides someone isn't leadership material and then notices every mistake they make, while ignoring their wins. It shows up in strategy meetings, when data that supports the plan gets applauded and data that challenges it gets quietly set aside. 

It's in the performance review in July that confirms what the manager already thought in January. It's in the post-mortem that concludes the strategy was right, just poorly executed. It's in the team that only ever invites voices that agree.

It shows up in hiring, when an interviewer warms to a candidate who reminds them of themselves and unconsciously discounts the evidence pointing elsewhere (something I was guilty of myself, in the past). 

The uncomfortable truth is that the stronger your conviction, the more vulnerable you are to it.

So here's a way to check if the bias is in play. Next time you feel certain, ask yourself: what would I need to see to change my mind? If you can't answer that, you're not properly evaluating the evidence. You're defending a conclusion you reached before you started.

With any bias, awareness is the first step. Intellectual honesty is the harder second step, but with practice, it becomes the one that actually changes things.