# About Component Behaviors Learn how to affect components’ reactions to device motion and scrolling. ## Discussion In Apple News Format, a behavior defines the physics of a component and its context and determines how a component responds to user actions. A behavior can specify the gravitational effect of a component or how the component reacts to the motion of the device. For example, a behavior can move the background of a component slightly more slowly than the user is scrolling. Apple News Format has these behaviors for components: - [`BackgroundMotion`](/documentation/AppleNewsFormat/BackgroundMotion). Causes the background of a component to move in the opposite direction from the motion of the device. - [`BackgroundParallax`](/documentation/AppleNewsFormat/BackgroundParallax). Causes the background of a component to move slightly more slowly than the user’s scroll speed. - [`Motion`](/documentation/AppleNewsFormat/Motion). Causes a component to react to movement of the device. - [`Parallax`](/documentation/AppleNewsFormat/Parallax). Causes a component to move at a specific speed. - [`Springy`](/documentation/AppleNewsFormat/Springy). Causes a component to act as if it is held in place with a short spring. A *behavior* is different from an *animation*. A behavior is persistent and always in effect as long as the user is viewing the article. An animation occurs only once each time the user views the article. See . ## See Also --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)