Human Computer Interaction: The Design of Everyday Things (User Centered Design – Chapter 7)
The document discusses seven principles of user-centered design: simplify structure, visibility, mapping, constraints, error design, leveraging user knowledge, and standardization. It emphasizes designing based on the user's mental model by understanding how their conceptualization of a system develops from their knowledge and past experiences. The goal is for users to intuitively understand what actions are possible and what is occurring in a design by structuring it in a clear, visible, and standardized manner that maps to users' real-world expectations.
Focus on enabling users to understand actions and interactions. Key aspects include usability and clarity.
Introduce seven principles of design aimed at simplifying user experience: structure, visibility, mapping, constraints, error design, and standardization.
Reiterate the importance of standardization throughout the design process to enhance user understanding.
Express gratitude to the audience, symbolizing the end of the presentation.
• User canfigure out what
to do.
• The user can tell what is
going on
Design must be in a way that:
3.
Seven Principals
Simplify Structure
Visibility
MappingRight
Power of Constraint
Design the Error
Use knowledge from
world + head
Standardize
• General knowledge
• Past Experience
• Tradition, rules
• Hints or signs
• Others experience
• and so on..
4.
Mental Model
Simplify Structure
Visibility
MappingRight
Power of Constraint
Design the Error
Use knowledge from
world + head
Standardize
Mental
Model
The design
model
The system
image
The user’s
model
5.
Mental Model
Simplify Structure
Visibility
MappingRight
Power of Constraint
Design the Error
Use knowledge from
world + head
Standardize
Mental
Model
The design
model
The system
image
The user’s
model
Conceptualization
that the designer has
in mind.
What the user develops
to explain the
operation of the system
Communication
between designer or
design and user
6.
Seven Principals
Simplify Structure
Visibility
MappingRight
Power of Constraint
Design the Error
Use knowledge from
world + head
Standardize
• Psychology of a person/user
• Make task as simple as possible
• Change the nature of the task
• Hints or signs
• Automate but keep the task
same
7.
Seven Principals
Simplify Structure
Visibility
MappingRight
Power of Constraint
Design the Error
Use knowledge from
world + head
Standardize• Make all the things visible
• Interact with user using visual appearances.