@inproceedings{CHI-2001-CorbettA,
	author        = "Albert T. Corbett and John R. Anderson",
	booktitle     = "{Proceedings of the 19th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/365024.365111",
	isbn          = "1-58113-327-8",
	pages         = "245--252",
	publisher     = "{ACM}",
	title         = "{Locus of feedback control in computer-based tutoring: impact on learning rate, achievement and attitudes}",
	year          = 2001,
}