For decades, we’ve been told that certain facial expressions (like a scowl for anger) or brain regions (like the amygdala for fear) are universal fingerprints of emotion. Barrett’s research reveals this is scientific fiction.

: A racing heart could mean fear in a dark alley or excitement at a concert. Your brain uses the surrounding environment to decide what a physical sensation means. 2. Emotions as Predictions, Not Reactions Your brain doesn't just react to the world; it predicts it.

What if everything you thought you knew about your emotions was wrong? In her groundbreaking book, , neuroscientist and psychologist Lisa Feldman Barrett challenges the centuries-old "classical view" that emotions are hardwired, universal reflexes.