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HCI Test 1 > HCI Test 1 > Flashcards

HCI Test 1 Flashcards

1
Q

When to use observation

A

Know users’ behavior in real life
When users’ behavior is observable
Understand context of user activity

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2
Q

Cautions in Observation

A

(1) Get permissions from users first
(2) Be aware of heavy logging workload
(3) Separate what you saw (behavior) and what you think (comments)

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3
Q

Types of quantitative analysis

A

(1) Descriptive results
(2) Regression analysis
(3) ANOVA

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4
Q

Descriptive results in data analysis

A

%, confidence interval, SD

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5
Q

Regression analysis in data analysis

A

using scores in a questionnaire to predict user satisfaction

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6
Q

ANOVA

A

measures the effects of factors on UI usages and preferences from questionnaire results or observations

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7
Q

Type of Qualitative analysis

A

Coding

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8
Q

Coding

A

Convert verbal and other qualitative information into digits

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9
Q

2 Coding methods

A

(1) with multiple evaluators and (2) with software

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10
Q

With multiple evaluators (coding)…

A

you have to invite at least two to code same results, training is needed, check their consistency

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11
Q

How to evaluate coding results

A

Correlation (correlation coefficient). Coefficient should be positivew and greater than .6, otherwise inconsistency between 2 evaluators

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12
Q

Coding software

A

(1) Coding analysis toolkit (CAT)
(2) RQDA
(3) WEFT QDA
(4) Stories Matter
(5) Compendium

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13
Q

Cost of bad design

A

(1) Performance and safety problems for users
(2) Customer/user give up the function
(3) Additional customer/user support
(4) User dissatisfaction -> reputation and lower market share

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14
Q

Why study HCI

A

(1) improve human performance, optimize workload and aesthetics
(2) bring new style of life

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15
Q

First track ball

A

Tom Cranston

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16
Q

First mouse

A

Douglas Engelbart

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17
Q

Usability Engineer job

A

(1) Development of prototypes and user interaction models
(2) Usability evaluation and testing
(3) User interface mock-ups
(4) Statistics and exp design
(5) Writing and communication skils

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18
Q

HCI Journals

A
  • ACM Transactions on Computer-Human Interaction
  • IEEE Transactions on Systems, Man, and Cybernetics
  • IEEE Transactions on Intelligent Transportation Systems
  • International Journal of Human-Computer Studies
  • Behavior & Information Technology
  • Applied Ergonomics
  • Human Factors
  • Ergonomics
19
Q

Another name for semantic network

A

Experience

20
Q

What can we learn from affordance movie (bank robber)

A

People follow naturalistic behavior

21
Q

Other basic design principles

A

(1) Consistency in terminology, colors fonts
(2) Shorcuts
(3) Dialogues to yield closure (sequences of actions clearly organized with beginning, middle, end)
(4) Error prevention, and management
(5) Easy reversal of actions (error tolerance)
(6) Internal locus of control
(7) Reduce working memory load

22
Q

Another design principle

A

Stimulus-response compatibility (stove-top pictures)

23
Q

Methods to describe users

A

(1) Market Segmentation

(2) Persona

24
Q

Methods to “know” users

A

(1) Questionnaire
(2) Interview
(3) Focus Group
(4) Observation
(5) Data analysis for those methods

25
Q

Persona (def)

A

A representation of one group of users, based on market segmentation

26
Q

What is included in persona

A

(1) nickname, photo, expected age
(2) Short description of characteristics of his or her jobs or other part of life relevant to the user interfact
(3) Context of use and constraints

27
Q

Market Segmentation

A

Distribution of current users/consumers in age, income, regions etc. Expected distribution of future users

28
Q

Odd number questions

A

more natural, but could make people be neutral on sensitive subjects

29
Q

Questionnaire Constructions

A

(1) Hierarchical construction based on theory and/or practice
(2) Propose questions based on each category in the hierarchy
(3) Choose open and close-ended questions

30
Q

Practice-based questions (examples)

A

phone-related, office-related, entertainment-related

31
Q

Theory-based questions

A

based on Maslow’s hierarchy

32
Q

Maslow’s hierarchy

A

(1) Physiological
(2) Safety
(3) Belongingness/love
(4) Esteem
(5) Aesthetic/cognitive
(6) Self-actualization

33
Q

Other questionnaire concerns

A

Time, location, sample size, data analysis, social judgment

34
Q

Under belongingness/love

A

affiliation, acceptance, affection

35
Q

Under esteem needs

A

competence, approval, recognition

36
Q

Under aesthetic/cognitive needs

A

knowledge, understanding, goodness, justice, beauty, order, symmetry

37
Q

Advantages of questionnaires

A

(1) large sample size
(2) quick and easy way to know some basic information
(3) no complex equipment

38
Q

Limitations of questionnaires

A

(1) reliability and validity
(2) Designing may be time-consuming
(3) not as interactive/exploratory as interview

39
Q

Things to keep in mind -> interview

A

(1) should be well-planned/stick to outline
(2) sequence: easy->hard
(3) opening and closing statements

40
Q

Lead statement for interview

A

(1) Goals of interview
(2) Major topics
(3) Time required

41
Q

Goals of initial questions in interview

A

Get interviewee talking, get background info

42
Q

While interviewing…

A

(1) take notes/record with proper permission and consent
(2) probe
(3) Focus/redirect
(4) Keep neutral position

43
Q

When to use focus group

A

natural expression when diverse opinions, sensitive topics

44
Q

Issues in focus group

A

(1) Avoid dominant speaker
(2) Avoid deviation from topic
(3) Distraction among members
(4) Too long/dry
(4) shy

HCI Test 1 (1 decks)

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