Researchers Maltese, Melki, and Wiebke investigated when lasting interest in STEM is sparked and how it is maintained by comparing the remembrances of adults who did and did not persist in STEM. Both groups said that they became interested in STEM early, usually by Grade 6. Those who persisted in STEM were more likely than those who did not to say that they had always been interested in STEM. Parents and teachers were early influences for those who stayed in STEM fields.