Intro & Motivation

Question 1

Give 3 reasons why usability is important

Answer 1

good usability can:
- reduce costs(support, efficiency)
- increase sales
-enhane costumer loyalty

Question 2

How to define usability?

Answer 2

is a quality attribute that assesses how easy user interfaces are to use

Question 3

What are the five quality components for usability?

Answer 3

-Learnability: how easy to acomplish tasks the first time
-Efficiency: once user learned the design, how easy can they perform task
-Memorability: how easily user reestabilish proficiency after a period of not using
-Errors: quantity , severity and recoverability of the erros users make
-satisfaction: how pleasant is to use the design?

Question 4

define Human-Computer Interaction from a pragmatic computer science view

Answer 4

How to enable interaction between one or more humans and one or more computational devices and with data

Question 5

define interactive system

Answer 5

interactive system is a computational system that allows users to interact in real-time. Interactions receive instant feedback visible to the user

Question 6

define User interface

Answer 6

The part of a system with which a user can interact

Question 7

What is the difference between user interface, interaction a experience design?

Answer 7

• user interface: choice of interface elements and theis placement
• interaction: support the way people communicate and interact in their everyday
  -experience:broader context designing the experience a person will encounter(unboxing)

Question 8

What are the 5 Dimensions of INteraction Design. Give one example for each one

Answer 8

• 1D Words: under the button text clarifying button’s effect
• 2D Visual representation: big red botton for cancel operation
• 3D Physical objects: touchscreen, microphone
  -4D Time : sound inside the cat for the driver
  -5D Behaviour: can the user scan one qr code to start interaction?