Information Processing and Skilled Behavior
Book: "HCI Models, Theories, AND Frameworks : Toward A Multidisciplinary Science", By Bonnie John. Chapter 4.

1. What are the key elements of a GOMS description? Describe each of them. What are the assumptions made by this family of models? What are the key restrictions of such models?

2. How many ways are there to select a paragraph in your favorite text editor? Describe them all using CMN-GOMS.

3. Looking back at all the possible way to select a paragraph, what are the heuristics a typical users will use to know which techniques to use?

4. Build a CMN-GOMS description of the following task: copy a paragraph from the beginning of a long document to the end.

5. What is the KLM model? How does it relate to CMN-GOMS? What are the pros and cons of this model? For what kind of analysis is this model used?

6. Compare and contrast KLM, CMN-GOMS and CPM-GOMS. Make a schedule chart of CPM-GOMS model of typing "hello world" (Use the extreme-expertise assumption). Do you think the total predicted time of CPM-GOMS is significantly different  from the estimation of KLM or CMN-GOMS? Why?

7. What was the goal of Project Ernestine? What were the results? How come the predictions of CPM-GOMS were more accurate than the non-cognitive predictions?

8. In Project Ernestine, the manufacturer of the new system claimed that it significantly simplified the operator task. Is it true? Why did this simplification backfire?