If that’s the case -- then you’re probably finding it even harder now that everyone is wearing a mask. A new study looks into how masks change the way we recognize faces. For some people, the inability to recognize faces is an actual medical problem known as prosopagnosia. The study found that people’s ability to recognize faces was decreased by about 15 percent when a mask was worn. For people who were not good at recognizing faces even without a mask, a mask lowered their performance to the level of a person with face blindness.