TEST: introduction VR-methods (lesson 5)
Setup for Testing my experience
Main objective for research: what do I want to find out?
Main research question
SubquestionsTaxonomy of usability characteristics
Methods for testing in Virtual Environments
# Exercise 1: VR versus GUI
Define virtual reality and briefly review the major types of VR technology:
VR-desktops
Head mounted displays (HMDs)
Cave Automatic Virtual Environments (CAVEs)
2. Categorise some of the major differences between VR and traditional user interfaces such as GUIs – and how these differences lead to specific types of usability evaluation issues.
# Exercise 2: expert evaluation methods (without users)
Usability testing in general: https://www.interaction-design.org/literature/topics/usability
Cognitive Walkthrough: https://www.coursera.org/lecture/ui-testing/cognitive-walkthroughs-CJvl6
Heuristic Evaluation tool: https://vroxygen.com/VRheuristics-tool-open.html & https://www.youtube.com/watch?v=_hY0KFuOqww
Usability Evaluation in Virtual Environments: Classification and Comparison of Methods
Read source: http://people.cs.vt.edu/~bowman/papers/usability_presence.pdf
Figure 1: Evaluation Methods with and without users Have a look at - Context of Evaluation & Type of Results - Generic & Application Specific - Qualitative & Quantitative
Figure 2: Evaluation Methods: how the different methods are related
User Task Analysis
Cognitive Walkthrough
Heuristic Evaluation
Formative Evaluation
Summative Evaluation
Figure 3: Take assessments (on task analysis, sensory performance and behavioral performance)
Figure 3: (https://link.springer.com/article/10.1186/1743-0003-7-11)
# Exercise 3: create my first testplan
Main objective for research: what do I want to find out?
- Main research question
- Subquestions
Preparation
- What are my assumptions about the users? What do I expect to happen?
Test methods
- What methods will I use to test my VR-experience? Show an overview.
- What are the goals of these methods?
- When should the methods be used?
- What are the benefits of using this methods?
- How are the method's evaluation results applied?
Context & User
- Physical testing environment: degrees of freedom, props or obstacles,
ergonomic challenges
- Virtual testing environment: degrees of freedom, cognitive load,
limitations & challenges (like puzzles or overcoming fear of heights)
- Explain the characteristics of test participants (height, hands,
visual abilities, cognitive abilities)
Instructions during test
- Specific instructions that I will provide the user.
- Explain how these instructions are related to the research questions
and objective of your test.
Interview questions (qualitative) after test
- Explain how you are going to interview the test participants after
the test
- Write down all questions or topics that you are going to discuss.Handy information about testing VR hardware & software
User-centered VE design approach example
Modified user-centered approach to the head-mounted display design cycle adapted from R.G. Eggelston (1997).
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