What was that?

It has been found that those who have dyslexia, dyspraxia and ADHD find it harder to filter out irrelevant information from their environment. Other people may be able to block out noise, movement and other things going on around them; however, people with dyslexia, dyspraxia and ADHD may pay just as much attention to them as they would to say the conversation they are having. This means that they have less attention available to focus on the task in hand.
Not being able to filter out what is irrelevant to you does have its advantages. Studies have shown that those who struggle to screen out irrelevant stimuli are more creative compared to those who can quickly distinguish between what is and is not relevant to them.
However, if you do find yourself needing to concentrate you need to reduce the amount of distractions you have surrounding you. One way of doing this is to alter where you are sitting. The best place to sit is with a wall to the back and to the side of you reducing your degrees of distraction. The distractions that do remain can be filtered out by simply looking up rather than turning your head to see what is going on. If moving position is not an option try listening to instrumental music to eliminate all the auditory distractions surrounding you.