How to Integrate Behaviora Science Into Your Marketing?

Behavioura science is about the automatic, instinctive, reflective reactions that people have. You can never make somebody do something that they do not want to do. A nudge or a prompt from behaviora science can easily send you in one direction or another. So where should you start if you're a marketer and would like to start working with bgo? What's the first two, three steps to take there?