Two students, Maria and David, are in the same challenging statistics course and are preparing for the final exam. Maria believes the exam's difficulty is beyond her capabilities and that her performance is largely up to luck and the professor's grading style. She feels overwhelmed, spends more time worrying about failing than studying, and avoids forming a study group. David, facing the same exam, believes that his success is directly tied to his effort. He creates a detailed study schedule, identifies his weak areas, and actively seeks help from a teaching assistant. Based on the psychological principles of how individuals manage stressful situations, analyze the likely differences in Maria's and David's stress levels and academic outcomes. Explain the key factors driving these differences.