Imagine you are sitting in a room with a lot of things around you, like toys, books, and pictures. You are focused on playing with a toy car, but suddenly you hear a loud noise outside. Your brain makes a "beep beep" sound and tells you to look at the window to see what's happening. This is called an attentional shift.
An attentional shift is when your brain changes your focus from one thing to another. It happens automatically and quickly, without you even realizing it. It is like someone tapping you on the shoulder and saying, "Hey, look at this!" and your head turns to see what it is.
Attentional shifts happen all the time in our everyday lives. For example, if you see a friend approaching you, your attention will shift from reading a book to talking to them. Another example is when you are driving a car and you see a traffic light turn from green to yellow, your attention shifts from the road in front of you to the traffic light to decide if you need to stop or go.
In essence, an attentional shift is when your brain helps you to quickly focus on something new and important, so you can respond appropriately to the situation. It's like a little helper in your brain that makes sure you're paying attention to what's going on around you.