注意力被广泛地描述为集中的一个时间量能上一个任务花费没有变得心烦意乱。多数教育家如心理学家一致认为，把注意力集中在任务的能力，是一个人的目标的实现至关重要。
SpanTest是一个应用程序，它可以让您测试您的持续关注周期能力，而分心，你的平均视觉记忆广度，同时帮助你得到更好，在同一时间。这是一个伟大的大脑训练演习，所有年龄段的人一定会喜欢。
Attention span is widely described as the amount of concentrated time one can spend on a task without becoming distracted. Most educators such as psychologists agree that the ability to focus attention on a task is crucial for the achievement of ones goals.
SpanTest is an app which lets you test your ability for sustained attention period without getting distracted and your average visual memory span while helping you get better at it, at the same time. This is a great brain training exercise which people of all ages will surely love.