Shyness, boredom, and grade point average among college students.

@article{Maroldo1986ShynessBA,
  title={Shyness, boredom, and grade point average among college students.},
  author={G K Maroldo},
  journal={Psychological reports},
  year={1986},
  volume={59 2 Pt 1},
  pages={395-8}
}