A few psychological facts you must know in your life. The facts are fun and puts you to think about these facts. Psychology is the science of mind and behavior. Psychology includes the study of conscious and unconscious phenomena, including feelings and thoughts. It is an academic discipline of immense scope, crossing the boundaries between the natural and social sciences. 

1. The best way to get an answer on the internet isn’t to ask it, you should instead post the wrong answer and let people correct you.
2. Recalling facts is easier with your eyes closed.
3. People tend to make decisions more quickly when they need to go to the bathroom.
4. Loving an imaginary or idealized image of a person is not the same as loving a person just the way they are.
5. Being able to think about how we think is a sign of higher intelligence.
6. Speaking in a calm and quiet voice while arguing with someone will help you dominate your opponent.
7. People who are in love behave similarly to people suffering from mental disorders.
8. People tend to form strong emotional connections with people they are singing with.
9. The more you pay someone for doing a menial task, the less he or she will enjoy it. When people are poorly compensated for unpleasant work, they are more likely to convince themselves that they actually enjoyed the work so as to reduce their own levels of cognitive dissonance.
10. About one-third of homicides in North America today have something to do with infidelity.
11. People are more giving to others when the room smells nice.
12. Negative reinforcement—eliminating something negative—works better than punishment as a disciplinary measure.
13. People tend to be more attracted to those who are similar but not too similar to them.
14. Guys love a good competition. In fact, men are wired to compete.Competitive games drive the social interaction of boys on the elementary school playground.When they grow up (…if they grow up) they throw their energy into work, physical fitness, acquiring man-toys, or adventures of various types.You can channel all that energy toward the relationship he has with you, but unfortunately most women don’t know how to do that.
15. If you suffer from pain, it can help if you are in love. That's very much like what a painkiller will do for you.
16. When you stare into someone's eyes, it causes your heartbeats to sync.
17. Appreciating someone can boost their confidence and motivate them to do better things in life.
18. Following the above point if you appreciate this answer, it will boost my confidence to write more answers like this.