This document discusses evaluating user experience. It explains that evaluation is important to understand the value of a product from the user's perspective, identify design issues, and better understand the user experience. Evaluation can happen at different stages of development with different types of participants and study methods. It is important to evaluate both before and during usage to understand snapshots of interaction as well as long-term experience. The document covers when, where, who, what, and how to evaluate user experience.

1. Evaluating User Experience
MGA 673 – UX evaluation
Sónia Sousa
Tallinn University
School of Digital Technologies
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2. Why we need
to evaluate?
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3. Evaluation
• Main idea
• Get informed about the value of your product:
• idea, conception, users’ needs, understandability, learnability,
trust...
• Getting a feedback about your design issues:
• Addressing end users and collecting data about their
perception and usage patterns.
• To better understand users experiences,
• Letting them to reflect on their needs and experiences
• meanwhile trying to make sense about the context, stimuli and
time factors
Why we
need to
evaluate?
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4. Purpose
Evalu-
ation
Artefact
Benefici-
aries
Interaction design
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5. When?
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6. Evaluation (When?)
Development phase
– Scenarios, sketches; i.e.
concepts
– Early prototypes
– Functional prototypes
– Products on market
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7. Where?
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8. Evaluation (Where?)
Study type:
– Field studies
– Lab studies
– Online studies
– Questionnaires / Scales
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9. Who to use?
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10. Evaluation (Who to use?)
Participant
– UX experts
– One user at a time
– Groups of users
– Pairs of users
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11. What to
evaluate?
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12. Evaluation (What to evaluate?)
Study period:
– Before usage
– Snapshots during interaction
– An experience (of a task or activity)
– Long-term UX
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13. What Objects
evaluate?
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14. Evaluation (What to evaluate?)
Interactive objects
– Interface on a screen
– Platform
– Browser
– Mobile
– Spatial interactive objects
Information exchange
• Visual
• Audible
• Tangible
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