Icon Design Research & Evidence-Based Practice 3 — Questions and Answers
Question 1: Which cognitive theory explains why a trash can icon successfully represents 'delete' even though users rarely use physical trash cans for digital files?
- Gestalt proximity principle
- Conceptual metaphor theory (Correct answer)
- Fitts's Law
- Von Restorff effect
Correct answer: Conceptual metaphor theory
Conceptual metaphor theory explains how abstract digital actions are understood through familiar physical-world analogies.
Question 2: A researcher uses eye-tracking data during an icon study. What does a long fixation duration on a single icon most likely indicate?
- The icon is highly attractive
- The user is confused or uncertain about the icon's meaning (Correct answer)
- The icon is well-placed in the layout
- The user's screen resolution is low
Correct answer: The user is confused or uncertain about the icon's meaning
Extended fixations typically signal cognitive effort, suggesting the user is uncertain and processing the icon more deeply than intended.
Question 3: What is the primary purpose of running a pilot study before a large-scale icon usability test?
- To generate publishable findings
- To identify flaws in the test protocol and stimuli (Correct answer)
- To train the participants
- To benchmark against competitors
Correct answer: To identify flaws in the test protocol and stimuli
Pilot studies reveal procedural problems, ambiguous tasks, or technical issues before they affect the main study's validity.
Question 4: Which sampling strategy should be used when icon recognition is expected to vary significantly across age groups?
- Convenience sampling
- Stratified random sampling (Correct answer)
- Snowball sampling
- Systematic sampling
Correct answer: Stratified random sampling
Stratified random sampling ensures proportional representation of each age group, making findings generalizable across the demographic range.
Question 5: During a competitive icon audit, a designer compares six products' icon sets. What type of evidence does this activity produce?
- Primary quantitative evidence
- Secondary qualitative benchmark evidence (Correct answer)
- Experimental causal evidence
- Ethnographic evidence
Correct answer: Secondary qualitative benchmark evidence
A competitive audit yields secondary qualitative benchmarks — descriptive observations about existing designs rather than controlled experimental data.
Question 6: A designer finds that 4 out of 5 usability participants struggled with the same icon. According to Nielsen's formula, approximately what percentage of usability problems does this represent?
- 15%
- 45%
- 85% (Correct answer)
- 99%
Correct answer: 85%
Nielsen's formula predicts that 5 users reveal approximately 85% of usability problems, making small-sample testing highly efficient.
Question 7: Which of the following best defines ecological validity in the context of icon research?
- The study uses environmentally friendly materials
- Test conditions closely resemble real-world usage contexts (Correct answer)
- Results are consistent across multiple lab settings
- The icon design reflects environmental themes
Correct answer: Test conditions closely resemble real-world usage contexts
Ecological validity measures how well study conditions mirror actual usage environments, ensuring findings transfer to real-world icon performance.
Icon Design Research & Evidence-Based Practice 3
Which cognitive theory explains why a trash can icon successfully represents 'delete' even though users rarely use physical trash cans for digital files?