In recent years, psychologists have studied a pattern of behaviour called continuous partial attention. It refers to a situation where a person keeps their attention spread across many sources of information at the same time. Instead of focusing deeply on one activity, people keep cheeking messages, notifications, news updates, and other digital alerts. This is different from multitasking, where a person deliberately shifts from one task to another. One reason this behaviour has increased is the design of many digital platforms. Applications often send frequent notifications to attract users' attention. Although each notification seems small, repeated exposure can slowly train people to expect constant updates. As a result, some individuals may find it more difficult to concentrate on activities that require long periods of focus, such as reading detailed material or solving complex problems. However, this pattern of attention is not always harmful. In some situations, such as tracking breaking news or coordinating a large team, it can help people stay informed about several things at once. The problem arises when the same habit continues during activities that require careful thinking and sustained concentration. Because of this, researchers believe the real challenge is not the presence of technology itself, but how individuals control their attention while using it.

According to the passage, why do digital platforms send frequent notifications?