First impression (psychology)

When you meet someone for the first time, your brain automatically decides if the person is friendly or not. This is called your first impression of them.

Your brain does this by using all the information it can gather about the person in a very short time. It looks at things like their body language, facial expressions, clothing, and tone of voice.

If the person seems nice and approachable, your brain will tell you that you like them. If they seem unfriendly or scary, your brain will tell you to be careful around them.

It's important to remember that first impressions aren't always accurate. Sometimes people can seem unfriendly at first, but turn out to be very nice. Other times, people can seem nice at first, but turn out to be not so nice later. So, it's always a good idea to get to know someone better before deciding if you like them or not.