학생 과제 점수는 오르는데 시험 점수는 24% 폭락 — 그리고 확인까지 2년이 걸린다
26,000명 학생을 대상으로 한 연구에 따르면 ai 사용자는 과제 점수가 18% 상승했지만 2년 후 입시 시험 점수는 24% 하락해, 지연되어 나타나는 학습 비용이 드러났다.
a study of 26,000 secondary students in central china found that those relying on ai for homework completed tasks 30% faster and saw an 18% grade increase, yet suffered significant declines in actual learning. while monthly exam scores dropped by 20% within six months, the most severe damage—a 24% drop on high-stakes entrance exams—only became fully visible after two years, indicating short-term studies miss ai's long-term cognitive costs. researchers identified outsourcing as the culprit, noting that 81% of long-term users finished homework too quickly to be learning, whereas students who spent normal time on homework retained their exam performance. social sciences were the hardest hit, with an average 27% decline, compared to smaller drops in stem and language subjects, suggesting critical thinking skills are uniquely vulnerable to ai replacement.