Effects Of Documentation Errors On User Perception Of Interactive Programs: Conclusions And Results
http://www.stc.org/confproceed/1994/PDFs/PG324326.PDF

See, Edward J.P.
STC Proceedings
1994

Abstract:

Defining the quality of information has long been a controversial item. Many different theories and methodologies have been brought forward; almost all share at least one common basis— Typographical errors lower the perceived quality of information. In this experiment, the first of a planned, series, we examined the effects of typographical on the user’s perception of the quality of the product and documentation. The conclusions of this first study, and the implications we can make draw them, are presented in this paper.