Measuring UsabilityMartin Christensen

Agile & Lean UX designer Coach and teacher

Martin Christensen

History

Martin Christensen

Martin Christensen

My reason

Martin Christensen

Avoid the ‘hipster designer disorder’. It’s characterized by an intense need to create novel designs just to be different. Typically leads to unintuitive interfaces with astronomical implementation costs and low adoption.

- UX Apprentice (http://www.uxapprentice.com/design/)

Gather needs

”It took me a while to understand what to do. That’s because I’m stupid.”

= Learnability

Create a surveyLearnability =>

1. Rate this sentence on a scale from 1 to 7, where 1 is that you strongly disagree and 7 is that you strongly agree: I imagine that most people in the business would learn to use this product very quickly.

2. Rate this sentence on a scale from 1 to 7, where 1 is that you strongly disagree and 7 is that you strongly agree: I think that I need the support of a technical person to be able to use this product.

3. Rate this sentence on a scale from 1 to 7, where 1 is that you strongly disagree and 7 is that you strongly agree: I needed to learn a lot of things before I could get going with this product.

Visualize

Martin Christensen

Ease of use

Effectiveness

Efficiency

Satisfaction

Sense of being in control

Capability

Efficacy

Conviviality

Consistency

Simplicity

Learnability

Usability (mean value)

1

2

3

4

5

6

7Learnability

Create a baseline

Baseline

Ease of use

Effectiveness

Efficiency

Satisfaction

Sense of being in control

Capability

Efficacy

Conviviality

Consistency

Simplicity

Learnability

Usability (mean value)

1

2

3

4

5

6

7

Set target criteria

Martin Christensen

Baseline

Target criteria

Ease of use

Effectiveness

Efficiency

Satisfaction

Sense of being in control

Capability

Efficacy

Conviviality

Consistency

Simplicity

Learnability

Usability (mean value)

1

2

3

4

5

6

7

Martin Christensen

Measure

Baseline

Target criteria

Current level

Ease of use

Effectiveness

Efficiency

Satisfaction

Sense of being in control

Capability

Efficacy

Conviviality

Consistency

Simplicity

Learnability

Usability (mean value)

1

2

3

4

5

6

7

Visualize

Martin Christensen

Ease of use

Effectiveness

Efficiency

Satisfaction

Sense of being in control

Capability

Efficacy

Conviviality

Consistency

Simplicity

Learnability

Usability (mean value)

1

2

3

4

5

6

7

Baseline

Target criteria

Current level

Usability - Average of all the qualities below • Ease of use - The user friendliness and lack of complications

the user feels when carrying out tasks

• Effectiveness - Accuracy and completeness with which a user can achieve her goals

• Efficiency - Resources expended (time) in relation to the accuracy and completeness of achieving the goals

• Satisfaction - Comfort and acceptability of the product

• Capability - The user-perceived maturity of the product in regard to functionality helping the user to achieve her goals. ("Feature-completeness")

• Efficacy - The accommodation of a user’s continuous advancement in knowledge and skill.

• Conviviality - The politeness, friendliness and general pleasantness of the product

• Consistency - The user-perceived relation and familiarity between different parts of the product

• Simplicity - The lack of complexity the product exhibits and the lack of burden the user experiences when carrying out tasks

• Sense of being in control - The user’s feeling of knowing what to do and how to do it as well as being secure in doing it

• Learnability - The user-perceived level of learning and understanding required to use the product over time

Measure continuously

Martin Christensen

Baseline

Target

First version

Contextual help

Wizard always on

Voluntary guide system

Learnability

Reach

Martin Christensen

http://www.episerver.se/globalassets/events/customer-and-partner-day-swe/episerver-7.5-det-ar-detaljerna-som-gor-skillnaden.pdf

http://www.youtube.com/watch?v=1Zrjx6Oojnk

Peter Sunna, Product Manager at EPiServer

Question time

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se.linkedin.com/in/martinuxchristensen/

martin.christensen@crisp.se

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