 Have you ever wondered why people act the way they do? Do you want to know why we get angry, sad, happy? Psychology can offer answers and insights into how we act and why we feel how we do. Do you want to learn some really exciting and surprising psychological findings? If you do, watch on for nine very interesting psychological facts that you may not know about. Number 1. People who speak two or more languages may change their personalities between languages without even knowing it, so someone may become more introverted when speaking French or more agreeable when speaking German. Number 2. People are more likely to follow orders in unfamiliar settings. This is because we're more likely to be obedient when we're unsure or when we feel others have more knowledge than us. So if you want someone to do something with you, like go on a trip, maybe ask them in an unfamiliar environment. Number 3. Even those who are concerned with equality hold implicit bias about things such as race. This is due to something known as the out-group bias, where we implicitly trust those who aren't a part of our in-group class. It is important to remember that this is implicit, meaning it is not consciously controlled. Number 4. Eye contact makes us more resistant to persuasion. This seems to be because eye contact is related to dominance, something we resent when someone is trying to persuade us to change our minds. So when you're trying to convince someone to buy something or to go to the cinema with you, eye contact might not be good. Number 5. The actor-observer bias is a tendency for us to blame our behavior on situational factors but blame other people's behaviors on internal factors. For example, we may blame our own bad mood on getting stuck in traffic while we blame others' bad mood on the personality. It's important we don't just make exceptions for ourselves, so try to be open-minded towards others when working out why they haven't acted a certain way. Number 6. Women who give birth to boys are more likely to develop postnatal depression. Myers and Johns' finding could be helpful in identifying those at risk of postnatal depression and giving them extra support. Number 7. Social media usage increases depression and loneliness. Hunt Eau found that this was especially true of people who were already depressed. It seems this is the case due to social comparison, comparing your lives to others' lives as seen on social media. So if you find yourself feeling lonely or depressed, spending a bit less time on social media might be a good idea. Number 8. Daughters who have close ties with their fathers can overcome loneliness easier. This was only true with daughters. With sons, the closeness of their relationships with their parents didn't affect how well they overcame loneliness. Yanayale suggested this is because boys aren't socialized to have close bonds and relationships in the same way girls are. Did you enjoy our first series on interesting psychology facts? If so, comment some interesting facts you know that you would like us to share in our next video. You might even get featured! Be sure to like this video and subscribe to our channel for more psychological content.