ABSTRACT
Error reduction is a major goal of ergonomics. Error reduction often is called cognitive ergonomics. This chapter discusses many aspects of errors and error reduction. Ten guidelines for error reduction are given. They are get enough information, ensure that information Is understood, have proper equipment/procedures/skill, don't forget, simplify the task, allow enough time, have sufficient motivation/attention, give immediate feedback on errors, improve error detectability, and minimize consequences of errors. The guidelines are organized in three categories: planning, execution, and allowing for error. There are many ways of categorizing errors. Errors can be of omission (passive, something not done) or commission (active, something done incorrectly). Commission can be further divided into errors of timing, sequence, selection, and magnitude. Errors can also be type 1 (also called alpha risk and producer's risk) or type 2 (also called beta risk and consumer's risk). The chapter then considers error costs and error cost reduction.
