The Design of Everyday Things

Psychopathology of Everyday Things

User-Centered Design

Why someone should read this book?

Psychopathology of Everyday Things

Ha ha ha . . . It’s not me!

Norman’s two principles of designing for people

1. Make things visible2. Good conceptual model

Make things visible

Sliding glass door

How to open it?

Good conceptual model

1. Affordance2. Mapping3. Constraints4. Feedback

Affordance

Provide us clues on how to operate a device

Horizontal bar for pushing

Vertical bar for pulling

Mapping

Relationship between two things

Left one for keyboard and right one for mouse

Stove

Constraints

It limit the ways in which something can be used

Left side door

Right side door

Feedback

Send information back to the user about what action has actually been

done

A pencil leaves mark which is feedback

User-Centered Design• It’s a philosophy that things should

be designed with the needs and interests of the user in mind• Making products easy to use• User interface design• How design should make• Figure out what to do and tell what

is going on

Four essential activities in a user-centered design project

Disadvantages

• It is more costly and takes more time• May be difficult to translate some type of data

into design