AI Boosted Homework Scores by 18% – Then Exam Scores Dropped 20%, Study Shows

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A caller study search 27,000 students successful China has recovered that pupils who utilized artificial intelligence devices saw higher homework scores complete time, but performed worse than their peers connected exams taken without AI assistance, according to investigation covered by The Economist connected August 18.

The Study

The investigation was conducted by David Stromberg of Stockholm University on pinch Victor Lei and Wu Yanhui of the University of Hong Kong. The study followed 27,000 pupils aged 12 to 18 successful China, wherever take of AI devices among students has grown quickly. Around 80% of the students surveyed reported utilizing AI models specified arsenic Doubao and DeepSeek, while the remaining 20%, who did not usage specified tools, formed a power group.

According to figures shared by The Economist, students who utilized AI saw their mean homework scores emergence by 18% crossed each subjects complete a six-month period. However, erstwhile the aforesaid students were tested nether exam conditions without entree to AI tools, they scored 20% beneath classmates who had not utilized AI during the study period.

Context connected AI Adoption Among Students

The study cited broader information connected really wide AI usage has go among students. A study conducted past twelvemonth by ed-tech patient Chegg recovered that 80% of undergraduate students successful able countries reported utilizing AI successful their studies. More caller polling put the fig astatine 94% among students successful Britain and 93% successful Germany.

The Economist noted that teachers person reported grading formulaic, similar-sounding essays they fishy were generated by AI chatbots specified arsenic ChatGPT, but said that, anterior to this study, robust grounds connected AI’s existent effects connected learning outcomes had been limited.

Related Research

A abstracted study conducted successful 2024 astatine the University of Pennsylvania examined a akin move connected a smaller scale. Students attending a mathematics instruction practiced problems utilizing either accepted study methods, specified arsenic notes and textbooks, aliases AI devices including ChatGPT and an AI tutoring program. According to a summary of the research, students utilizing AI performed amended during short-term believe sessions, but the advantage did not transportation complete to a consequent closed-book test.

Reactions

The Economist’s summary of the findings, shared connected the societal level X, drew important engagement, pinch immoderate commenters attributing the exam people spread to students copying AI-generated answers without engaging profoundly pinch the material. The study was besides discussed connected forums including Hacker News, wherever immoderate users questioned aspects of the study’s creation while others noted it aligned pinch existing concerns among educators.

A extremity expanse published by the Brookings Institution earlier this twelvemonth said AI tin support learning erstwhile utilized intentionally and designed well, but cautioned that overreliance connected the exertion to switch thinking, societal interaction, aliases productivity could forestall students from processing cognitive and societal skills.

The Stockholm University and University of Hong Kong researchers’ afloat study had not been independently verified by different institutions astatine the clip of publication.