COMPSCI325 Midterm

Effectiveness

How good is the product at doing what it is supposed to do? (Usability Goals)

Efficiency

How well does the product support users in carrying out their tasks? (Usability Goals)

Safety

Does the product protect the user from dangerous conditions and undesirable situations? (Usability Goals)

Utility

Does the product provide the right kind of functionality so that the users can do what they need or want to do? (Usability Goals)

Learnability

How easy is it to learn how to use the product? (Usability Goals)

Memorability

How easy is it to remember how to use the product once it has been learned? (Usability Goals)

Affordance

A relationship between the properties of an object and the capabilities of the agent that determine how the object could possibly be used (Design Concepts/Principles)

Signifier

A perceivable indicator that communicates appropriate behavior to a person (Design Concepts/Principles)

Constraints

A limit on what we can do with a system (Design Concepts/Principles)

Mapping

A relationship between signifiers and functions/states of an interface (Design Concepts/Principles)

Visibility

How easy it is to perceive a system status or function (Design Concepts/Principles)

Feedback

A signal from the system after an action is performed (Design Concepts/Principles)

Consistency

Designing interfaces to use similar operations and elements for achieving similar tasks (Design Concepts/Principles)

Transfer Effect

When knowledge acquired earlier affects one’s ability to learn/perform in another context (Design Concepts/Principles)

Design Double Diamond

<Discover, Define><Develop, Deliver>

Setting Goals

If collecting data, you must be able to articulate why (Data Gathering)

Identifying Participants

Goals inform who you collect data from (population) and selection of participants (sampling) (Data Gathering)

Determining Relationships

What is the relationship between the collectors and the providers? (Data Gathering)

Triangulation

Triangulation of Data (data taken from diff. sources at diff. times), Investigator Triangulation (diff. researchers involved), Triangulation of Theories (using diff. theoretical frameworks), Methodological Triangulation (employing diff. gathering techniques) (Data Gathering)

Pilot Studies

A small trial run of the main study to determine viability of collection method (Data Gathering)

Qualitative data

Interpreted to tell a story; thematic analysis appropriate

Quantitative data

Values that can be analyzed statistically, formatted and presented as charts/tables/graphs/etc.

Observation

Least structured, greatest breadth of novelty possible (Data Collection)

Interviews

Slightly structured, decent breadth of novelty possible (Data Collection)

Questionnaires

Most structured, least breadth of novelty possible (Data Collection)

Closed questions

Have a predetermined answer format

Open questions

Do not have a predetermined format

Requirements

A statement about an intended product that specifies what it’s expected to do/perform (“As a <role>, I want <behavior> so that <benefit>”)

Functional

What the system should do (Types of Requirements)

Data

What kinds of data need to be stored? How will they be stored? (Types of Requirements)

Environmental/Context of Use

Physical (where), social (collaboration/coordination, data sharing, distribution, synchronicity, privacy), organizational (user support, communications structure/infrastructure, availability of training), technical (what technologies will it run on?) (Types of Requirements)

User

Characteristics and information about system use (Types of Requirements)

Usability

See usability goals (Types of Requirements)

User Experience Goals

Quality of experience (Types of Requirements)

Conceptualizing what users are doing

ex. Surfing the web (Conceptual/Interface Metaphors)

A conceptual model instantiated at the interface

ex. Desktop metaphor (Conceptual/Interface Metaphors)

Visualizing an operation

ex. Shopping cart icon (Conceptual/Interface Metaphors)

Instructing

Issuing commands and selecting options (Interaction Types)

Conversing

Interacting with a system as if having a conversation (Interaction Types)

Manipulating

Interacting with objects in a virtual or physical space by manipulating them (Interaction Types)

Exploring

Moving through a virtual environment or a physical space (Interaction Types)

Responding

The system initiates the interaction and the user chooses whether to respond (Interaction Types)