Known scientifically as “involuntary musical imagery,” an earworm is a fragment of music that compulsively replays in one’s head. The phenomenon, which is distinct from auditory hallucination and is believed to affect nearly everyone to some degree, has been studied by psychologists and neurologists alike. Some notable science fiction stories have concerned fictional songs so catchy that they get stuck in everyone’s head, destroying civilization. Do earworms last longer for men or women? Discuss