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you should use the Assignment Template file only in the attachment to submit the answer of Task 2.2 and Task 2.3 questions from Week 02.
College of Computing and Informatics Course Title Goes Here
Course Code Goes Here Assignment #
Deadline: Day 00/00/2017 @ 23:59
[Total Mark for this Assignment is #]
Student Details:
Name: ### ID: ### CRN: ###
Instructions:
This Assignment must be submitted on Blackboard via the allocated folder.
Email submission will not be accepted.
You are advised to make your work clear and well-presented, marks may be reduced for poor
presentation.
You MUST show all your work.
Late submission will result in ZERO marks being awarded.
Identical copy from students or other resources will result in ZERO marks for all involved
students.
Convert this Assignment to PDF just before submission. Pg. 1
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Week 2 Questions
1. Describe how interface researchers apply the scientific method (controlled experimentation) to validate their designs. 2. What are the weaknesses of controlled experimantation? 3. Name the usability measures that can be used to produce a practical evaluation of a system. Keep the goals of efficiency and satisfaction in mind with these measures. 4. Name some reasons why the interfaces for electronic health records (EHRs) have remained hard to use. (From article “User Unfriendly”) Terms and Concepts to Know: 1. Time to learn 2. Speed of performance 3. Rate of Error 4. Retention over time 5. Subjective satisfaction 6. Design Plasticity 7. Life critical systems 8. Controlled Experiment
Usability Motivations Chapter 1.3 System Cost Considerations Life Critical Systems: [Examples] Air traffic control, nuclear reactors, police/fire, military, medical High costs are expected Performance
Requirements (Speed, reliability) High Training/Learning Factors Lengthy. Needed to produce rapid, error‐
free responses, even when users under stress. Importance of Subjective Satisfaction Less. Users are well‐
motivated professionals. Industrial and Commercial Uses: [Examples] Home/Entertainment: [Examples] Exploratory, Creative, Collaborative Interfaces: [Examples] Not mentioned. What would you predict? Sociotechnical Systems: [Examples] Often government funded. Difficult to assess because of exploratory nature of these applications. Not mentioned. What would you predict? Must generate confidence from the using public. User Needs, Skill Levels Skill obtained by frequent use of common functions and training for emergencies.