M2

Double Diamond Design

* Discover
* Define
* Develop
* Deliver

Discover

Designer try to gather insights about the problem.(insight into the problem)

Define

Designer develop clear brief thaty frames the challenge. (the area to focus upon)

Develop

Solutions por concept arecreate, prototyped, tested, and iterated. (Potential solutions)

Deliver

Resulting project is finalized, produced, and launched. (Solutions that work)

==Interaction== design

discovering requirements for the product, designing something to fulfill those requirements, and producing prototypes that are then evaluated.

Four Basic Activities of Interaction Design

* Discovering Requirements
* Designing Alternatives
* Prototyping
* Evaluating

Discovering Requirements

focused on discovering something new about the world and defining what will be developed.

Designing Alternatives

proposing ideas for meeting the requirements

Prototyping

involves designing the behavior of interactive products as well as their look and feel.

Evaluating

process of determining the usability and acceptability of the product or design measured in terms of a variety of usability and user-experience criteria.

proof of concept

conceptualizing new ideas as part of a design project in terms of what the proposed product

Benefits of conceptualizing the design space

* Orientation
* Open-Mindedness
* Common Ground

Conceptual Model

“a highlevel description of how a system is organized and operates”.

(Jeff Johnson and Austin Henderson (2002))

Instructing

Where users issue instructions to a system.

Conversing

Where users have a dialog with a system.

Manipulating

Where users interact with objects in a virtual or physical space by manipulating them (for instance, opening, holding, closing, and placing).

Exploring

Where users move through a virtual environment or a physical space.

Responding

Where the system initiates the interaction and the user chooses whether to respond.

Heuristic evaluation

expert reviewers critique an interface to determine conformance with a short list of design heuristics, such as the Eight Golden Rules.

Guidelines review

System is checked for conformance with the organizational or other guidelines document

Consistency inspection

Experts verify consistency across a family of interfaces, checking the terminology, fonts, color schemes, layout, input and output formats, and so on, within the interfaces as well as any supporting materials.

Cognitive walkthrough

experts simulate users walking through the system to carry out typical tasks.

Formal usability inspection.

experts hold a courtroom-style meeting, with a moderator or judge, to present the interface and to discuss its merits and weaknesses.

Paper mockups and prototyping

Early usability studies can be conducted using paper mockups of pages to assess user reactions to wording, layout, and sequencing.

Discount usability testing

This quick-and-dirty approach to task analysis, prototype development, and testing has been widely influential because it lowers the barriers to newcomers (Nielsen, 1993).

Competitive usability testing

This approach compares a new systems to previous versions or to similar products from competitors.

A/B testing

This approach tests different designs of a system. Done with just two groups of users to observe and record differences between the designs.

Universal usability testing

This approach tests systems with highly diverse users, hardware, software platforms, and networks.

Field tests and portable labs

testing method puts new interfaces to work in realistic environments or in a more naturalistic environment in the field for a fixed trial period.

Remote usability testing

Conduct of usability tests online.

Can-you-break-this tests

Usability testing by providing energetic teenagers witl1 the challenge of trying to beat new games.

Model

Simplified description of a system or process that help describe how it works.

Interface metaphors

provide structure that is similar in some way to aspects of a familiar entity but has thier own behaviors and properties.

Think-aloud and related techniques

technique during usability testing where users are invited to think aloud about what they are doing as they are performing tha task.