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HCI(Human Computer Interaction)-PPT-REPORT.pptx
- 1. Understanding Evaluation inHuman Computer Interaction
- 2. 4 APPROACHES TO EXPERT ANALYSIS Evaluation ThroughExpert Analysis Evaluation Through User Participation Introductio n
- 3. WHAT IS EVALUATION? •Evaluation in HCI refers to the process of assessing the usability, effectiveness, and efficiency of a computer system or interface. Back to Agenda Page GOALS OF EVALUATION • To identify usability issues. • To improve user satisfaction and task performance. • To ensure the system meets user needs and goals.
- 4. Back to AgendaPage IMPORTANCE OF EXPERT ANALYSIS IN THE DESIGN EVALUATION PROCESS • Evaluation is crucial at every stage of the design process. • It's best to evaluate the system before any implementation begins.’ • Early design evaluation prevents costly mistakes by allowing adjustments before significant resources are invested. • Expert analysis is often more cost- effective than continuous user testing during design.
- 5. Back to AgendaPage 4 APPROACHES TO EXPERT ANALYSIS • Cognitive Walkthrough • Heuristic Evaluation • Use of Models • Use of Previous Work
- 6. Back to AgendaPage • Method for evaluating usability by simulating user thought processes. • Step-by-step evaluation of tasks users perform. • Identifies potential usability issues. • Useful for assessing mobile app usability
- 7. Back to AgendaPage • Method for identifying usability issues based on established principles. • Experts assess the interface against predefined heuristics. • Helps uncover design violations and areas for improvement. • Can be applied to the mobile app showcased in the video.
- 8. Back to AgendaPage • Utilizes formal models of human- computer interaction. • Predicts user behavior and evaluates system usability. • Examples include cognitive models. • Useful for understanding how users interact with the app.
- 9. Back to AgendaPage • Builds upon existing research and knowledge. • Incorporates insights from similar evaluations or studies. • Enhances understanding of usability challenges and best practices. • Provides context for evaluating the mobile app's design.
- 10. Experimental Evaluation • Participants •Variables • Hypotheses • Experimental Design • Statistical Measures • Studies of Groups of Users Styles of Evaluation • Laboratory studies • Field studies Observational Techniques • Think Aloud And Cooperative Evaluation • Protocol Analysis • Automatic Protocol Analysis Tools • Post-task Walkthroughs Query Techniques • Interviews • Questionnaires Evaluation through Monitoring Physiological Responses • Eye Tracking for Usability Evaluation • Physiological Measurements
- 11. Factors distinguishing evaluationtechniques • The stage in cycle at which the evaluation is carried out (Design vs. implementation) • The style of evaluation (Laboratory vs. field studies) • The level of subjectivity or objectivity of the technique (Subjective vs. objective) • The type of measures provided (Qualitative vs. quantitative) • The information provided • The immediacy of the response • The level of interference implied • The resources required
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