Showing posts with label Fu. Show all posts
Showing posts with label Fu. Show all posts

Tuesday, September 21, 2010

20100922 - Fu, Usability Evaluation of Web Page Design

Usability evaluation of Web page design

by Fu, Limin Paul, Ph.D., Purdue University, 1999 , 196 pages; AAT 9951955



My Interest:

(1) Usability Evaluation conceptual model.

(2) User Satisfaction conceptual model.

(3) 3 or 5 Hypotheses – how to conclude "Supported" or "Not Supported."

(4) Explore relationships of DV & IV.


Action:

To download the entire Dissertation from Proquest.

Low priority – read specific parts of Dissertation in future.



Usability Evaluation Conceptual Model


Based on World Wide Web users' characteristics, a usability evaluation conceptual model for Web page design was proposed.

The two dimensions of the model are usability evaluation methods and user's performance level.


User Satisfaction Conceptual Model


Based on the task characteristics on the World Wide Web and the usability components, a conceptual model for user's satisfaction was proposed.

The three dimensions of the model are user's satisfaction, task type, and usability components.


Hypotheses & Experimental Design


Three hypotheses were proposed to test the conceptual models and three experiments were conducted with a total 102 subjects to test the models.

The dependent variables in experiments were the number of usability problems identified, performance time, error rate, and questionnaire score of Usability for Web Page Design, satisfaction scores, and number of item in shopping cart.

The independent variables were the usability evaluation method, interface type, apparent usability, inherent usability, and task type.


Results Discussion


The hypothesis that heuristic evaluation method is more effective than user testing in identifying usability problems associated with rule-based level of performance was supported, and for the skill-based level it was suggestively significant.


The hypothesis that user testing is more effective than heuristic evaluation method in identifying usability problems associated with knowledge-based level of performance was supported.


The hypothesis that the questionnaire of usability evaluation for Web page design has similar reliability and validity as the other usability questionnaires was not supported.


The hypothesis that in searching task inherent usability is the main factor contributes to user's satisfaction was supported.

The hypothesis that in browsing task apparent usability is the main factor contributes to user's satisfaction was not supported.


Inherent usability was the main factor contributed to user's satisfaction in both searching and browsing task. Apparent usability has a suggestively significant contribution to user's satisfaction.


Comments: It is acceptable that our research prediction/hypotheses is proven untrue or "not supported."


Note: I have missed downloading the entire Dissertation.

Friday, October 30, 2009

Oct 15 - "Usability Questionnaire" & "Usability Evaluation" -ProQuest Dissertation Search

Oct 15 - Search dissertations with keywords "Usability Questionnaire" and "Usability Evaluation" at ProQuest.

Eden, Joel Uzi. The Distributed: Cognitive Walkthrough: The Impact of Differences in Cognitive Theoruy on Usability Evaluation. [Thesis, PhD] Drexel University. May 2008.

Fu, Limin. Usability Evaluation of Web Page Design. [Thesis, PhD] Purdue University. May 1999.

Howarth, Jonathan Randall. Supporting Novice Usability Practitioners with Usability Engineering Tools. [Dissertation, PhD in Computer Science & Applications] Virginia Polytechnic Institute and State University, Blacksburg, Virginia. April 13, 2007.

Olarte Enciso, Nadia Elizabeth. Development and Usability Heuristic Evaluation of an Application in PDA for Supporting Physicians Tasks at the Point of Care. [Project, M.E. in Computer Engineering] University of Perto Rico, Mayaguez. 2007.

Rawls, Charles L. Jr. PERFORMANCE SUPPORT AND USABILITY: AN EXPERIMENTAL STUDY OF ELECTRONIC PERFORMANCE SUPPORT INTERFACES. [Dissertation, Doctor of Education] University of Central Florida, Orlando, Florida. 2005.

Ryu, Young Sam. Development of Usability Questionnaires for Electronic Mobile Products and Decision Making Methods. [Dissertation, PhD in Industrial & Systems Engineering] Virginia Polytechnic Institute and State University, Blacksburg, Virginia. July 2005.

Schnitman, Ivana. The Dynamics Involved in Web-based Learning Environment (WLE) Interface Design and Human-Computer Interactions (HCI): Connections with Learning Performance. [Dissertation, Doctor of Education in Technology Education] West Virginia University, Morgantown, West Virginia. 2007.

Young, Deborah Elspeth. Evaluation of Dust Control Technologies for Drywall Finishing Operations: Industry Implementation Trends, Worker Perceptions, Effectiveness and Usability. [Dissertation, PhD in Industrial & Systems Engineering] Virginia Polytechnic Institute and State University, Blacksburg, Virginia. August 3, 2007.

Zhikute, Lina. Design and Evaluation of a Siebel Basic Navigation Course. [Thesis, M.A. (Educational Technology)] Concorda University, Montreal, Canada. April 2006.