This is part of my Bite Size Psychology series. Psychology is not just about figuring out why your friend talks to their plants or why you can’t stop binge-watching that new series even though you have a million things to do. It’s a field that encompasses everything from understanding cognitive processes—like how we learn and remember—to the social dynamics that make us tick. Ever wondered why you can remember every lyric to that 90s boy band song but can’t recall where you left your keys? Welcome to cognitive psychology, where your brain is both the star and the culprit in this daily sitcom of life.