Question 1:

(a) Initially, human information processing was believed to occur in 4 distinct stages. State and describe each of those stages.

(b) What are the 3 types of human memory? Describe each one of them, how they can be improved and how you can move information from the more volatile to the less volatile type of memory.

Question 2:

What are the computational factors affecting the speed of an interactive program? Discuss how the effects of these factors can be limited.

Question 3:

State three factors in the physical environment that directly affect the quality of the interaction and the user's performance?