By filtering out any unimportant background information, attention helps you focus on different tasks like drawing a complex scene, playing video games, or reading this article. Attention can also help direct you to especially important information, like a siren or your name, so attention is a very necessary skill for humans. Imagine how difficult it would be if you wanted to focus your attention on something important but could not, or if your attention could not alert you to important changes in the environment. You would not be able to do your homework, learn a new skill, or even cross a busy street!
Because attention is so important, researchers are curious about how the brain knows what to pay attention to, especially when there are so many things happening around us. Some research shows that attention differs from person to person and changes depending on what people are paying attention to. For example, while some individuals pay more attention to social information (this is called social attention), not everyone has the same bias for social attention, which makes researchers interested in the root of these differences.

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Go to source: https://kids.frontiersin.org/article/10.3389/frym.2019.00130