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IS6421 HCI by Mind Map: IS6421 HCI
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IS6421 HCI

Lecture 5 Usability Principles


easy to use

easy to learn


Usability Principles

Learnability, 1. Predictability, 2. Synthesizability, 3. Familiarity, 4. Generalizability, 5. Consistency

Flexibility, 6. Dialogue Initiative, 7. Multi-threading, 8. Task Migratability, 9. Substitutivity, 10. Customizability

Robustness, 11. Observability, 12. Recoverability, 13. Responsiveness, 14. Task Conformance




Lecture 1 Course Overview and Introduction

Tutorial 1

Team Formation

Topics for Assignment 1

Introduction (55 mins)

Activity - Satellite, Goal of Interaction Design, easy to learn, easy to use, Importance of Interaction Design, Productivity and Safety aspects, Enjoyable to use, Do useful and desired things, User-centered approach

H.C.I, Multiple disciplines, Factors in HCI, Practical Implication, Design, Implementation, Prototyping & Evaluation, Design Models

Course Overview (~25 mins)


Topics, HCI Foundations, Design, Implementation and Evaluation

Tutors and Lecturers

Lectures & Format

Weekly Schedule and Topics, Refer to the spreadsheet (v2)

Assessment, Attendance, Tutorials and Participation - 20%, Group Assignment 1 - 20%, Group Assignment 2 - 20%, Exam - 40%

Future Interaction

Links sharing: DoCoMo, XBox Natal Project

Tutorial 2

Menu Design

Lecture 2 The Human

Information i/o via Human sensory systems (~35mins)

Visual, How our eyes function?, Ambiguity can be resolved by Context, Optical Illusion, Reading

Auditory, How our ears function?, Limitation of our hearing, Human can easily filter what they want to listen

Haptic, =touch, Different kinds of Stimulus

Movement, Time to respond to stimulus, Reaction time + Movement time, Fitt's law, Think your way to do measurement on the project work

Memory (~20 mins)

Types, Sensory Memory, Short-term Memory, Long-term Memory, Semantic Network, Frame Model, Script Model, Procedural Model

Storage, Forgetting and Retrieval

Reasoning (~25 mins)





Tutorial 3

1. Short-term Memory

2. Reasoning

3. Redesign for ATM

Lecture 3 The Computer, Interface and Interaction Style


Forms of Interaction, Batch, Interactive

Goal of Interaction, Inputs and Outputs

Links: Computer History

Elements that affect interaction

Input, Keyboards, Mouses, etc, Immersion Technology, Links: Minority Report, Links: PS3, others


Memory, STM, LTM, Storage formats


Interaction Style (to be covered in Lecture 4)

Ergonomics Factors

Query Dialog

Command Line


Natural Language

Form-fills and spreadsheet


Surface computing

Tutorial 4

Input interfaces

Surface style input

Lecture 4 Interaction and PACT

Interaction Models

Norman's Model, Execution Phase, Evaluation Phase, Example - Want more light

Abowd's Model, Four parties - User, System, Input and Output, Four steps in the interaction cycle, Articulation, Performance, Presentation, Observation, Examples of error in each step

Interaction Layers

Physical Layer

Syntactic Layer

Semantic Layer

Ergonomics and Interaction Styles (slides in Lecture 3)

PACT Framework

Activities and context establish requirements, for Technologies

Technologies offer opportunities to undertake, activities in different ways

PACT concerns

Differences among People, Physical Difference, Psychological Difference, Mental Models, Conceptual Models, Fill in the details Users don't tell the Designers, Usage Difference

Characteristics of Different Activities, Temporal Aspects, Co-operation and Complexity, Safety Critical, Content

Example - Designing a ticket machine

Lecture 7 Design Process & Prototyping

Software Engineering

Software Life Cycle, Highly interactive?, Waterfall Model, Spiral Model

Usability Engineering

Usability Specification, Example: Undo VCR






Potential Problems

Fidelity, Low, Early, Paper Sketches, StoryBoarding, Midium, Interactive prototypes, e.g. powerpoint button, High, Late

Lecture 8 Requirements Analysis

Gathering input

Brainstorming, e.g. PACT

Field studies, Observe, Collect artefacts, Capture social context

Interviews, Stories, Scenarios, Prototyping

Requirements, Functional, Must do, Non-Functional, Quality that must have, MoSCow Rules, Must have, Should have, Could have, Would like to have but won't have

Scenarios (lec09)

Task Analysis, Task Analysis, Task Modelling

Claims (lec09)

Lecture 9 Scenarios

Scenarios design

User Stories

Conceptual Scenarios

Concrete Scenarios, UI conceptual design, evaluate prototyping, UI detailed design

Use Cases, Documentation, Implementation

Claims Analysis

Usability claim, +ve & -ve impacts

Balanced analysis, Pros, Cons

What if analysis, expands scenarios

Lecture 10 Evaluation Techniques

Analytic evaluation

Cognitive walkthrough

Heuristic, IMPACT, 10 Heuristics Evaluation List

Review based

Model based

Experimental evaluation

Query evaluation



Observational evaluation

Think aloud

Post-task walkthrough

Factors on choosing an evaluation methods

Stage, early, late, throughout

Styles, Lab, Field

Objective, Subjective, Objective

Measure, Qualitative, Quantitative

Information, low, High






Lecture 6 Design Principes

Design Principles

Learnability, 1. Visibility, 2. Consistency, 3. Familiarity, 4. Affordance

Effectiveness, Ease of use, 5. Navigation, 6. Control, 7. Feedback, Safety, 8. Recovery, 9. Constraints

Accommodating, 10. Flexibility, 11. Style, 12. Conviviality

3D Prototyping - Google Sketch Up Training

Lecture 11 Web Design

Design and Development

Structure of the site

Information Architecture, Affinity Diagram, Card-Sorting Techniques

information design

navigation design

Designer's concerns

principles of good interaction design, Skeleton plane, information design, navigation design, interface design, wireframe technique, Design principles for website, text & hyper text, meaning URLs, min scrolling, any page entry, Usability Poisons, links color, back button, resizing windows, pop ups, Ad like design

4 major components

Content Design, F-shaped pattern, Inversed Golden Triangle

navigation deisgn, labeling, navigation support, Site ID Logo, sign, good feedback, search mechanisms, site maps, breadcrumbs, navigation bars / Tabs, search box

Search, Metadata, Vocabularies

Forms, Multi-level forms

Lecture 12 HCI implementation & support, multimedia

Implementation & support

Type of implementation, Big bang, Phased, Parallel, Pilot

Implementation plan, E.g. establish responsibilities, Conduct initial assessment, Develop organizational policy, Select software, Factors on selecting the right tool, Experience, Efficiency, Capability, Speed of execution, Economical factors, OS preference, Provide training, Development, Promote organization awareness, Monitor


User experience, Media & multimedia, WWW, use with cautions, Elements of multimedia, Text, Images, Audio, Video, Animation

Presentation Skills

My Geistesblitzes


十 一