IT'S HUMAN NATURE TO have cognitive biases. These tendencies to think in certain ways or process information by filtering it through your personal preferences, beliefs and experiences are normal, but they can offer a skewed perspective.
"We all have these biases – they are the lenses through which we process information and they are a necessary part of the information-selection process," says Mark Reinecke, professor and chief psychologist at Northwestern University and Northwestern Memorial Hospital in Chicago. Even physicians and mental health professionals have cognitive biases when making decisions for their own health and while treating patients.