Chapter 12 Flashcards Preview

Human Computer Interaction - CS408 > Chapter 12 > Flashcards

Flashcards in Chapter 12 Deck (21):
1

What is conceptual model

The developer/designer intend to think on his mind about an object. It is defined as "a description of the proposed system in terms of a set of integrated ideas and concepts about what it should do, behave and look like, that will be understanding by the users in the manner intended."

2

What is implementation model

It is system image. It consist of documentation, labels and other physical things.

3

What is gulf of execution

The difference between mental model and conceptual model

4

What is gulf of evaluation

Amount of effort a person must exert to interpret the physical state of the system and determine how well the expectations and intentions have been met.

5

If we easily understand the system and actions then gulf of execution is small otherwise it is large.
True/false

True

6

If we easily understand the consequences of actions of system then gulf of evaluation is small otherwise it is large.
True/false

True

7

What are design principles

- Visibility
- Affordance
- Constraints
- Consistency

8

What is visibility

Make relevant part visible

9

What is affordance

Its an attribute of an object that gives clues how to use it.

10

What are 2 types of objects

1. Physical
2. Virtual

11

What are 2 types of affordance

1. Real (physical objects e.g. chair)
2. Perceived (virtual objects e.g. button)

12

Which type of affordance is not obvious and has to be learned

Virtual

13

What are constraints

Restricting the kind of user interaction that can take place at a given moment of time.

14

What are different types of constraints

1. Physical
2. Logical
3. Cultural

15

What are physical constraints

It refer to the way physical objects restricts the movement of things (e.g. door key place in a door)

16

What are logical constraints

It exploits people's everyday common sense reasoning about the way the world works (e.g. same port holes size on CPU for different ports, this create ambiguity for user)

17

What are cultural constraints

These are based on cultures. (e.g. signboards on another culture cities)

18

What is mapping

Mapping is a relationship between controls and their effects in the world

19

What are constraints in UI

Restricting user for a specific action (e.g. disabling of button)

20

What is consistency

Consistency is making sure similar operations have similar features

21

What is feedback

Sending information back to the user what has been done