Tool 3

Question 1

What is an evolutionary design

Answer 1

When a project is gradually improved over time

Question 2

What are the 3 forces that work against evolutionary design

Answer 2

1. The demands of time
   The new version is released before the old version has been updated (fixed)
2. Pressure to be distinctive
   Each design must-have new features than previous
3. The curse of individuality and market differentiation
   The product must have a unique design but solve the problem its made for

Question 3

Why was the QWERTY keyboard made?

Answer 3

Typers were typing too fast so the keys would get jammed so they invented the QWERTY keyboard to slow them down

Question 4

What are common design mistakes? (3)

Answer 4

Putting aesthetics above usability
Thinking for the user
Cluttering the interface

Question 5

What is affordance

Answer 5

The properties that tell the user how the interface can be used.
e.g.
scissors have a big hole and a small hole indicating which fingers go where

Question 6

What is constant in HCI terms

Answer 6

A mechanism that restricts the behaviour of the user

Question 7

Types of constraints?

Answer 7

Semantic constraint (picture of the right direction a card should enter an ATM)
Cultural constraint (green means go and red means stop)
Logical constraint (logical relationship between object and the constraint e.g. two light switches, switch closest to the room is for that room)

Question 8

What is mapping

Answer 8

Relationship between two things

Question 9

What is visibility

Answer 9

GIbes the user understanding of what is going in in the interface

Question 10

Feedback

Answer 10

Is information sent back to the user once action has been performed