Usability

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Roberto Dadda

Definition of usability

Design Technology Business

Mater of Arts in Communication Design

WEB DESIGN
Usability

Usability: formal definition

Usability

WEB DESIGN NABA 2014 Roberto DADDA

2

Usability, definition
The extent to which a
product can be used by
specified users to achieve
specified goals with
effectiveness, efficiency,
and satisfaction in a
specified context of use.
(ISO 9241)

Usability

ISO 9241
Ergonomic requirements for office work
with visual display terminals (VDTs).
ISO 13407
Human-centred design processes for
interactive systems.

WEB DESIGN NABA 2014 Roberto DADDA

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Usability: declination

Usability

WEB DESIGN NABA 2014 Roberto DADDA

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Usability

WEB DESIGN NABA 2014 Roberto DADDA

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Learnability
• How easy is it for users to accomplish basic tasks the first time they
encounter the design?
• How easy is to remember?

Usability

WEB DESIGN NABA 2014 Roberto DADDA

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Efficiency
• Once users have learned the design, how quickly can they perform
tasks?

Usability

WEB DESIGN NABA 2014 Roberto DADDA

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Memorability
• When users return to the design after a period of not using it, how
easily can they re establish proficiency?

Usability

WEB DESIGN NABA 2014 Roberto DADDA

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Errors handling
• How many errors do users make, how severe are these errors, and
how easily can they recover from the errors?

Usability

WEB DESIGN NABA 2014 Roberto DADDA

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Satisfaction
• How pleasant is it to use the design?

Usability

WEB DESIGN NABA 2014 Roberto DADDA

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Not a surface matter

Usability

WEB DESIGN NABA 2014 Roberto DADDA

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Roberto Dadda
www.dadda.it
roberto@dadda.it
+39 338 775 22 03
Twitter, facebook, linkedin: robertodadda

Usability

WEB DESIGN NABA 2014 Roberto DADDA

12

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The psychedelics industry, though not fully established due to legality issues, is witnessing a surge of brands preparing for a potentially competitive landscape. At the core of any movement lies the mastery of communication and narrative construction. Branding surpasses mere logos; it embodies the visible tip of the iceberg or, metaphorically, the fruiting body of fungi. This keynote gives a high level overview of the prevailing trends within the psychedelic world, offering insights, a case study and some notes on branding's fundamental essence.

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Usability

1. Mater of Arts in Communication Design WEB DESIGN Usability

2. Usability: formal definition Usability WEB DESIGN NABA 2014 Roberto DADDA 2

3. Usability, definition The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use. (ISO 9241) Usability ISO 9241 Ergonomic requirements for office work with visual display terminals (VDTs). ISO 13407 Human-centred design processes for interactive systems. WEB DESIGN NABA 2014 Roberto DADDA 3

4. Usability: declination Usability WEB DESIGN NABA 2014 Roberto DADDA 4

5. Usability WEB DESIGN NABA 2014 Roberto DADDA 5

6. Learnability • How easy is it for users to accomplish basic tasks the first time they encounter the design? • How easy is to remember? Usability WEB DESIGN NABA 2014 Roberto DADDA 6

7. Efficiency • Once users have learned the design, how quickly can they perform tasks? Usability WEB DESIGN NABA 2014 Roberto DADDA 7

8. Memorability • When users return to the design after a period of not using it, how easily can they re establish proficiency? Usability WEB DESIGN NABA 2014 Roberto DADDA 8

9. Errors handling • How many errors do users make, how severe are these errors, and how easily can they recover from the errors? Usability WEB DESIGN NABA 2014 Roberto DADDA 9

10. Satisfaction • How pleasant is it to use the design? Usability WEB DESIGN NABA 2014 Roberto DADDA 10

11. Not a surface matter Usability WEB DESIGN NABA 2014 Roberto DADDA 11

12. Roberto Dadda www.dadda.it roberto@dadda.it +39 338 775 22 03 Twitter, facebook, linkedin: robertodadda Usability WEB DESIGN NABA 2014 Roberto DADDA 12

Usability

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