Usability Evaluation in Educational Technology

Usability Evaluation in Educational Technology Prepared for class presentation by: Dr. Alaa Sadik ILT, SQU www.alaasadik.net [email_address] Dillon, A. (2001) Usability evaluation. In W. Karwowski (ed.) Encyclopedia of Human Factors and Ergonomics, London: Taylor and Francis .

The Concept of Usability ,[object Object],[object Object],[object Object],[object Object]

What is Usability? ,[object Object]

Methods of Evaluation Usability ,[object Object],[object Object],[object Object],[object Object]

Methods of Evaluation Usability ,[object Object],[object Object],[object Object]

Methods of Evaluation Usability ,[object Object],[object Object],[object Object],[object Object],[object Object]

Comparisons of Methods - Measures only one component of usability - Limited task applicability - Provides rigorous estimate of usability criterion - Can be performed on interface specification Model-based - Expert-variability unduly affects outcome - May overestimate true number of problems ,[object Object],[object Object],Expert-based - Time consuming - Costly for large sample - Requires prototype to occur - Most realistic estimate of usability - Can give clear record of important problems User-based Disadvantages Advantages Usability method

Usability Evaluation in Educational Technology

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