How good are you at concentrating?

… I said at CONCENTRATING! To find out, see how quickly you can find the odd letter out in each of the following gridsDid you find it harder to spot the odd letter out in the second grid than the first? Did it take you a little longer? If so, the reason is probably that you were distracted by the cartoon character on the right, even though it is, of course, utterly irrelevant to the task.In fact, recent research conducted at University College London found that people who were easily dist