For many of us, hazard perception was one of the more fun and less nerve-wracking parts of the driving test. But if spotting the unexpected doesn't fall within your skillset, scientists warn you may experience'inattentional blindness'. Researchers at New York University (NYU) have recreated the classic'invisible gorilla test' from over 20 years ago in an effort to understand our capabilities. More than 1,500 participants were shown unsuspecting footage of six people throwing two basketballs between them. While viewers were asked to simply count how many times those wearing white pass the ball, this was not the real test at all.

The human brain has a limit on how much information it can process at once due to a finite energy supply, a new study reveals. UK neuroscientists say that energy supply to the brain remains constant and can't exceed an upper limit, however challenging a task is. But as the brain uses more energy in processing the task at hand, less energy is supplied to processing outside our immediate focus, they say. This results in what's known as'inattentional blindness' – when stimuli that's available in plain sight doesn't register, even if it's valuable to us. This can help explain why we are sometimes unable to concentrate on what our family members are telling us while we're playing video games or watching TV.