A recent study was conducted with 48 adults who were asked to perform a finger exercise as fast as they can. Some participants were given compliments after the task. The researchers concluded that, "To the brain, receiving a compliment is as much a social reward as being rewarded money." They have found scientific proof that people perform better after receiving a social reward such as a compliment.

As a human being, you are constantly talking to yourself, having an inner monologue with yourself. It's called self-talk. Self-talk is an internal dialogue that can affect your confidence and self-esteem. One kind of this is positive self-talk, a personal (mental) conversation with a positive mental attitude towards your life and yourself.

It's misleading to say that the human brain evolved "more". Every brain is specialized to its own niche. We declare the human brain to be best because that's the one we have.

Swearing, the critics say, may make us appear ill-educated, rude and untrustworthy, as our mothers might have tried to drill into us. But it could have some surprising benefits, from making us more persuasive to helping relieve pain.