CS 3724 Introduction to Human Computer Interaction

CS 3724Introduction to Human Computer Interaction

Section 1 CRN 11499 TuTh 5:00-6:14 209 McB

Today’s Agenda

Where is the interface? eXFR tape Attention, Control, Display

What can we learn from graphic design and art? Location Format Regularity Reinforcement Information and emotion Interface semantics

Midterm Guidance

Today’s Agenda

Where is the interface? eXFR tape Attention, Control, Display

What can we learn from graphic design and art? Location Format Regularity Reinforcement Information and emotion Interface semantics

Midterm Guidance

Where is the interface?

Where is the interface?

In a computer?

Where is the interface?

In a computer? In a car?

Where is the interface?

In a computer? In a car? In a bowling alley?

Where is the interface?

In a computer? In a car? In a bowling alley? In the SiesmoSpin?

Where is the interface?

In a computer? In a car? In a bowling alley? In the SiesmoSpin? In the Tilty Table?

QuickTime™ and aH.263 decompressor

are needed to see this picture.

Where is the interface?

Control What is used to control the system

Attention What the user is paying attention to. Could be looking at, holding, hearing

Display What the system “shows” Visual, auditory, touch, aroma

Notice that user’s attention and system display are closely linked, but not necessarily the same.

Today’s Agenda

Where is the interface? eXFR tape Attention, Control, Display

What can we learn from graphic design and art? Location Format Regularity Reinforcement Information and emotion Interface semantics

Midterm Guidance

Information Design:What can we learn from

Graphic Design?

Information Design

• Very long tradition of graphic design

• Before the book, even!

Location heuristic

Put the beginning at the place where most people start to read.

Wall reading vs. book reading

• Bibliographic: book-based literacy– Last 400 years in European

culture

• Epigraphic: wall-based literacy– Egypt, Rome– Where you read is important part

of communication

Location heuristic

Put the beginning at the place where most people start to read.

• Bibliographic (e.g. windows): Left to right, top to bottom

• Epigraphic (big displays): center

Regularity heuristic

Establishing a discernable pattern makes for easier communication and navigation.

Regularity heuristic

Establishing a discernable pattern makes for easier communication and navigation.

Breaking the pattern is a powerful way to control attention.

Regularity heuristic

Establishing a discernable pattern makes for easier communication and navigation.

Breaking the pattern is a powerful way to control attention. (Or To CoNfUsE.)

Reinforcement heuristic

Use shape and animation to reinforce important ideas. Use sparingly.

Format heuristics

Start by using graphics conventions:

• Fonts (Times or Helvetica)• Spacing (page grid and white space)

• Color (a few, tried and true)

Graphic Design: A few resources

• Principles of Graphic Design: http://www.mundidesign.com/presentation/index2.html

• Basic Graphic Design Theory for web design: http://desktoppub.about.com/cs/designprinciples/

• “Classic Design Theory”: http://desktoppub.about.com/cs/designprinciples

Where does meaning come from?

Interface semantics

• Informational content: – Difficult to completely separate from emotional content

• Emotional content:– Difficult to completely separate from informational content

Interface semantics

This is the painting Vincent van Gogh made just before he killed himself.

Interface semantics

• Structuralism (semiotics)• “Affordances” (gestalt)

Sign = Sr + Sd(Structuralism)

• Linguistics• Saussure

Structuralism

• Admits values and history• All meaning is relative• Used in designing control, display and attention management

• Foundation for:– Post-Modernism– Critical Theory– Post-Structuralism

Gestalt / “Affordances”

• Gestalt psychology– Kurt Lewin– The whole is more than the sum of the parts

• Ecological psychology: a psychology of affordance– JJ Gibson– Door handle “wants” to be grasped

“Affordances”

• Does not admit values or history

• “Universals”• Mostly used for control aspects

Hold me

Pour me

Yank me

“Affordance”

Hold me

Pour me

Yank me

“Affordance”

2-stroke chainsaw engine says “Macho”

BlenderGreen plastic says outdoor power tool

Name says hard-drinkin’ at sporting events

Structuralism

Click this

Type here“Affordance”

Find everything

Click this

Type here“Affordance”

“We care”

“Official”

Structuralism

Find everything

Title or link?

What does this font say?

Semantics heuristic

Establish a consistent interface language.

A Comparative Study of Beauty

What about how it looks?

A Comparative Study of Beauty

• In Math • In Engineering• In Art

– Traditional European– Japanese– Contemporary

Mathematical Beauty

• Elegance• Symmetry• Simplicity• Compactness

Engineering Beauty

• Optimization• Efficiency• Systematicity• Repeatability (sometimes)

European (traditional)

• Transcendent• Narrative (allegorical, etc.)

• Apprehended by the many (“Big WOW”)

• Immediate

Japanese art

• Subtle• Surface appearances• Apprehended by the few, with

patience

Contemporary Art

• Irony (the tension of meanings)

• Abstraction• Provocation• (NOT “Beauty”)

Aspects of user reaction to display

• “Beauty”• Style• Context• Legibility• Message• Details of content

Today’s Agenda

Where is the interface? eXFR tape Attention, Control, Display

What can we learn from graphic design and art? Location Format Regularity Reinforcement Information and emotion Interface semantics

Midterm topics

Mid Term Guidance

Read the Book! Chapters 1-6 Scenario-Based Design

In class stuff Heuristic: if we talked about more than once, it is likely to be

on the test Morphological box Rittle, Vitruvius

Other stuff won’t hurt, too.

For Thursday:

Due Next Thursday:

Mid Term

Team Report 2

Next Week: Dr. N returns C#