Psychological biases are the human tendency for us to make decisions in an illogical way. The concept was introduced by psychologists Daniel Kahneman, Paul Slovic, and Amos Tversky in the early 1970s. Kahneman later won a Nobel Prize for his work and went on to write the best-selling book Thinking, Fast and Slow.
In his book, Kahneman describes the “fast thinking” part of the brain as System 1. This way of thinking helps us make snap decisions, such as jumping away when we hear a loud noise.
Slower thinking, or System 2, is used to solve more complicated problems. Usually, Systems 1 and 2 work very well, but in some situations, System 1 may cause a person to jump to conclusions too quickly and lead to what we now know as psychological biases.
