HCI Final Exam Word Scramble
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Question | Answer |
Analytical Evaluation | Users do not need to be present; knowledge of typical users' behaviors is applied. Users: not involved Location: anywhere When: prototype Data: problems Feedback: problems Type: expert reviews |
Cognitive walkthroughs | evaluator simulates the user's problem solving process step-by-step |
Evaluation | Why? to ensure users can use the product and that they like it. What? a conceptual model, early prototypes of a new system and later, more complete prototypes. Where? natural or laboratory settings When? Formative evaluation & Summative evaluation. |
Formative evaluation | perform during design to check that product continues to meet users' needs |
Summative evaluation | done to assess success of finished products |
Usability Testing | Measuring users' performance on typical tasks. Users: perform tasks Environment: Controlled laboratory When: protype Data: qualitative & quantitative Feedback: measures & errors Type: applied |
Field Studies | Done in natural environment. Data takes the form of notes & recordings. the aim is to understand what users do naturally Users: natural Location: natural When: early Data: mostly qualitative Feedback: descriptions logs Type: naturalistic |
3 main evaluation approaches | 1. Usability testing 2. field studies 3. Analytical evaluation |
DECIDE | Determine the goals. Explore the questions. Choose the evaluation approach and methods. Identify the practical issues. Decide how to deal with the ethical issues. Evaluate, analyze, interpret and present data. |
Determine | determine the goals |
Explore | explore the questions |
Choose | the evaluation approach and methods |
Identify | identify the practical issues |
Decide | decide on how to deal with practical issues |
Evaluate | evaluate, interpret, analyze and present the data. |
Experiment | Predict relationship between two or more variables. |
independent variable | manipulated by the researcher (different font types) |
dependent variable | depends on the independent variables (time taken to read the texts) |
counterbalancing | used in same participant experimental designs; ensure the order in which participants perform the task does not bias the results |
different participants | single group of participants allocated randomly. (advantage: no order effects; disadvantage: many subjects & individual differences a problem) |
same participants | all participants appear in both conditions. (advantage: few individuals, no individual differences; disadvantage: counterbalancing needed because of ordering effect) |
Matched participants | same as different participants, but participants are matched in pairs and allocated to a condition (advantage: same as different participant but less individual differences; disadvantage: cannot be sure of perfect matching on all differences) |
3 types of experimental design | Different participant. same participant. matched participant |
4 key issues of data gathering | setting goals, triangulation, participant relationship, pilot studies |
Closed questions | have a predetermined answer format: yes or no |
open question | do not have a predetermined format |
4 main types of interview | opened-ended or unstructured structured semi-structured group interview |
3 types of observation | direct observation in the field direct observation in controlled environments indirect observation |
Colin Robson Framework | a framework helps observers observe effectively |
passive observer | outsider (does not take part in the study environment) |
participant observer | insider (becomes full member of group he is studying) |
Ethnography | a philosophy with a set of techniques to uncover the social organization of activities. |
Ethnographers | immerses themselves in the culture that they stud. the observers adopt a participant observer role |
questionair may be | on paper, online, or email |
Data gathering technique | can be combined depending on study focus, participants, nature of technique and available resources. |
Created by:
vzeamer
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