neurologists have actually unveiled brain processes that cause some of these self-deceptions. When we are in love, brain changes literally impair our critical thinking ability (which is why it can be difficult to argue a sixteen-year-old out of a crush). Interestingly, the same changes can be triggered by maternal love, which can be even more unreasonable. The positive illusions about the personalities and traits of those we love the most lead us to be, in a very literal sense, blind to their flaws. Psychologists call this the “love-is-blind bias.”
