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Flashcards in Human Computer Interface Deck (40)
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Information visualisations allow people to?

Make sense and rapid decisions about masses of data


Cognition involves several processes such as?

Attention, memory, perception and learning


The way an interface is designed can greatly affect what?

How well users can perceive, attend, learn and remember how to do their tasks.


Theoretical frameworks such as external cognition provide ways of?

Understanding how and why people interact with products, which can lead to thinking about how to design better products


What are the three types of interviews?

Unstructured - Are not directed by a script. (Rich but not repeatable.)

Structured - Are tightly scripted. (Replicable but may lack richness.)

Semi-Structured - Guided by a script but interesting issues can be explored in more depth (Can provide a good balance between richness and replicability.)


What is Ethnography?

Involves immersing a researcher in the everyday activities of an organization or society, usually for a prolonged period of time.


What is an interface?

A layer of software, and/or hardware allowing the user toa ccess ther underlying computational functionality


What is interaction design?

Designing interactive prodcuts to suppoert the way people communicate and interact in their everyday lives.


Why is usability important?

Makes people's work faster and easier

Makes people's lives more enjoyable


The UI development process includes four main steps...

Requirements capture

Initial design & prototype




Requirements capture invloves three main steps...

Find out what the user wants

Find out what the customer will pay for

Understand the tasks and context you are designing for


Advantaes of questionnaires

Answering specific questions

Can reach many people easily and cheaply


Advantages of interviews

Exploring issues

Interviewer can guide interviewee if necessary

Encourages contact between develoers and users


Advantages of focus groups

Collecting multiple viewpoints

Highlights areas of conseus and conflict

Encourages contact between developers and users

Brings out hidden features


Advantages of direct observation in the field


Understanding context of activity

Observing actual work/activity gives unique and grounded insight


Advantages of indirect observation

User doesn't get distracted by the data gathering, automatic recording means that it can extend over long periods of time


Hierarchical Task Analysis is the...

Break down of tasks into subtasks, sub-sub tasks and so on


Explain Iterative Design

Identfify and document specific goals for usabilty, bases on understanding use needs and requirements.

Iterate through design, prototype and evaluate

Users should be involved throughout the project, they are the judges.


What is a Conceptual model?

A description of the proposed system in terms of a set of integrated ideas and concepts about what it should do, behave and look like, that will be understandbale by the users in the manner intended


What is wizard of oz prototyping?

Prototype an interactive system by using human operators to simulate machine behaviour.


Explain a bit about high fidelity prototyping

Uses materials that you would epect in the final product

Prototype looks more like the final system than low-fidelity


Don't let user think it's finished. You want them to be critical.



What are some different approaches to evaluation?

Usability testing

Field studies

Analytical evaulation


The main methods of evaltuation are...


Asking users

Asking experts

User testing


Modelling of users task performance


Triangulation in terms of software design involes...

Using a combination of techniques to gain different perspectives, or analysing data using different technieques


DECIDE, a framework to guide evalutaion, stands for...

Determine the goals

Explore the questions

Choose the evalutation approach and methods

Identify the practical issues

Decide how to deal with the ethical issues

Evaluate, analyse, interpret and present the data


Explain a bit about usability testing

Involves recording performance of typical users doing typical tasks

Done in controlled enviroment

Data could be recorded on video, key logs, etc...


Give examples of typical data recorded in usability testing

Time to complete task

Number and type of errors per task

Number of navigations to help pages

Number of users completeing task sucessfully


How many participants is good enough for user testing?

Typically 5 - 10


Explain a bit about field studies

Done in a 'natural' setting

Aim is to understand what users do already


Name the three main types of experimental design

Differtent participants

Same participants

Matched participants