Task analysis

Describe and discuss how the use of task analysis plays an important role in ergonomic training and development. Be specific and give examples to supplement your discussion. In addition, what is the difference between task analysis and applied cognitive task analysis?
The assignment requires that you use your text (Course book: A Guide to Human Factors and ergonomics by Martin Helander, 2006 Taylor & Francis Group. LLC) and at least one other references and readings, which pertain to the topic in question.