
Teacher feedback VS AI-assisted peer feedback in L2 writing: A quasi-experimental study in a Chinese University
Jinfeng Tang, Ping Li, Rong Luo
PLOS One
An eight-week study compared teacher comments with peer feedback supported by DeepSeek in two university English classes. Both approaches supported better revised essays, but their improvement patterns and feedback focus differed. An initial vocabulary-diversity advantage for the AI-peer class did not persist into the second task, and sentence-complexity results were limited. Because intact classes received different teaching packages, the findings cannot separate AI's contribution from peer discussion or other class differences.
