This special issue contains essays regarding the CHI '95 conference, which featured a panel titled, Discount or Disservice? Discount Usability Analysis: Evaluation at a Bargain Price or Simply Damaged Merchandise? Wayne Gray, who organized the panel, presented a controversial critique of studies that had evaluated various usability evaluation methods (UEMs). The level of interest in this discussion led Gray to propose a review article that dealt with the issues in a more systematic fashion. The resulting essay, written by Gray and his collaborator Marilyn Salzman, conducted an in-depth review of a series of influential studies that used experimental methods to compare a variety of UEMs. Gray and Salzman's analysis was framed using Cook and Campbell's (1979) well-known discussion of various forms of validity. They used this to evaluate numerous details of these comparative studies, and they concluded that the studies fell short on the criteria by which good experimental studies are designed and interpreted.
Contains essays regarding the CHI '95 conference, which featured a panel titled, 'Discount or Disservice', 'Discount Usability Analysis: Evaluation at a Bargain Price or Simply Damaged Merchandise'.
1. OVERVIEW --
2. INTRODUCTION --
3. THE UNIQUE ROLE AND BURDEN OF EXPERIMENTS IN EMPIRICAL STUDIES OF HUMAN-COMPUTER INTERACTION --
4. THREATS TO THE VALIDITY OF EXPERIMENTAL STUDIES -- 4.1. Cause-Effect Issues -- Statistical Conclusion Validity -- Internal Validity -- 4.2. Generality Issues -- Construct Validity -- External Validity -- 4.3. Conclusion Validity -- 4.4. Summary: Threats to Validity of Experimental Studies --
5. THREATS TO THE VALIDITY OF FIVE INFLUENTIAL UEM STUDIES -- 5.1. Jeffries, Miller, Wharton, and Uyeda (1991) -- Overview -- Statistical Conclusion Validity -- Internal Validity -- Construct Validity -- External Validity -- Conclusion Validity -- Summary of the Review of Jeffries et al. (1991) -- 5.2. Karat, Campbell, and Fiegel (1992) -- Overview -- Statistical Conclusion Validity -- Internal Validity -- Construct Validity -- External Validity -- Conclusion Validity -- Summary of the Review of Karat et al. (1992) -- 5.3. Nielsen (1992) -- Overview -- Evaluation -- Statistical Conclusion Validity -- Internal Validity -- Construct Validity -- Conclusion Validity -- Summary of the Review of Nielsen ( 1992) -- 5.4. Desurvire, Kondziela, and Atwood (1992) -- Overview -- Statistical Conclusion Validity: Sample Size -- Internal Validity: Selection -- Construct Validity and External Validity -- Summary of the Review of Desurvire et al. ( 1992) -- 5.5. Nielsen and Phillips (1993) -- Overview -- Statistical Conclusion Validity -- Internal Validity -- Construct Validity and External Validity -- Conclusion Validity -- Summary of the Review of Nielsen and Phillips (1993) -- 5.6. Summary of the Reviews --
6. OBSERVATIONS AND RECOMMENDATIONS -- 6.1. Predicting and Measuring Usability: Effect Construct Validity -- Hits, False Alarms, Misses, and Correct Rejections -- Tokens, Types, and Categories of Usability Problems -- Convergent Measures -- Effect Construct Validity: Recommendations -- 6.2. Recommendations for Addressing the Four Types of Validity -- Stati
Olson, Gary A.
Lisainfo e-raamatute kohta