One promising application of AI in educational settings is the generation of individualized feedback that can support learners in their learning process, even for complex tasks such as writing essays. In this talk, Jennifer Meyer, Assistant Professor for Educational Diagnostics and Counselling in Schools at the Centre for Teacher Education at the University of Vienna, will present empirical results on the effectiveness of AI-generated feedback, the role of learners’ individual differences for feedback engagement, learner perceptions of AI-generated feedback compared to human feedback, as well as the effects of hallucinated feedback on student learning outcomes.