The starting point for behavioral psychology is a focus on only
observable human behavior leaving out thought and emotion.
I think this approach rests on three main
assumptions.

First, people learn their behavior from the world
around them, and not from innateor inherited factors.
Second, because psychology is a science, render data from controlled
emotions and observation should support its premise.
Third, all behavior is the result of a stimulus that triggers a particular
response.
Once the behavioral intellectual has identified a person’s
stimulus-response culture, then it can be predicted easily.

So, ” Behavior is the Mirror in which everyone shows their portrayal “