Self-determination is not an appropriate model for understanding parental permission and child assent.

@article{Denham2002SelfdeterminationIN,
  title={Self-determination is not an appropriate model for understanding parental permission and child assent.},
  author={E Joseph Denham and Robert M. Nelson},
  journal={Anesthesia and analgesia},
  year={2002},
  volume={94 5},
  pages={1049-51}
}