@misc{spitzer2023perception,
  title={On the Perception of Difficulty: Differences between Humans and AI},
  author={Philipp Spitzer and Joshua Holstein and Michael Vössing and Niklas Kühl},
  year={2023},
  eprint={2304.09803},
  archivePrefix={arXiv},
  primaryClass={cs.HC},
  url={https://arxiv.org/abs/2304.09803}
}