James R. Lewis

Personal Homepage
http://drjim.0catch.com/
Employer
IBM (http://www.ibm.com)
Email
drjimnfl@comcast.net

Began college studies as music major.  Graduated 1975 with BM in music theory and composition, 1978 with MM in music composition.  Switched to experimental psychology, graduating with BA in 1978 and MA (engineering psychology) in 1982 (all degrees from New Mexico State University).  Began work at IBM in 1981 as human factors engineer, primary focus on input methods (keyboards, mice, touchscreens, joysticks).  Started work on speech input/output in early 1990s.  Graduated with PhD in experimental psychology (psycholinguistics) in 1996 (from Florida Atlantic University).  In addition to scholarly publications, has over 50 patents issued by the US Patent Office -- designated an IBM Master Inventor in 2003.

Publication Statistics

Publication period start
1989
Publication period end
2011
Number of co-authors
5

Co-authors
Number of publications with favourite co-authors

Productive Colleagues
Most productive colleagues in number of publications

Publications

Sauro, Jeff, Lewis, James R. (2011): When designing usability questionnaires, does it hurt to be positive?. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems , 2011, . pp. 2215-2224. http://dx.doi.org/10.1145/1978942.1979266

Sauro, Jeff, Lewis, James R. (2010): Average task times in usability tests: what to report?. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems , 2010, . pp. 2347-2350. http://doi.acm.org/10.1145/1753326.1753679

Sauro, Jeff, Lewis, James R. (2009): Correlations among prototypical usability metrics: evidence for the construct of usability. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems , 2009, . pp. 1609-1618. http://doi.acm.org/10.1145/1518701.1518947

Lewis, James R., Sauro, Jeff (2006): When 100% Really Isn't 100%: Improving the Accuracy of Small-Sample Estimates of Completio. In Journal of Usability Studies, 1 (3) pp. 136-150. http://www.upassoc.org/upa_publications/jus/2006_may/lewis_small_sample_estimates.pdf

Lewis, James R. (2006): Sample sizes for usability tests: mostly math, not magic. In Interactions, 13 (6) pp. 29-33.

Lewis, James R. (2001): Psychometric Properties of the Mean Opinion Scale. In: Proceedings of the Ninth International Conference on Human-Computer Interaction , 2001, . pp. 149-153.

Lewis, James R. (2001): Current Issues in Usability Evaluation. In International Journal of Human-Computer Interaction, 13 (4) pp. 343-349.

Lewis, James R. (2001): Evaluation of Procedures for Adjusting Problem-Discovery Rates Estimated From Small Sample. In International Journal of Human-Computer Interaction, 13 (4) pp. 445-479.

Wang, H., Lewis, James R. (2001): Intelligibility and Acceptability of Short Phrases Generated by Embedded Text-to-Speech En. In: Proceedings of the Ninth International Conference on Human-Computer Interaction , 2001, . pp. 144-148.

Lewis, James R. (1999): Tradeoffs in the Design of the IBM Computer Usability Satisfaction Questionnaires. In: Bullinger, Hans-Jorg (eds.) HCI International 1999 - Proceedings of the 8th International Conference on Human-Computer Interaction August 22-26, 1999, Munich, Germany. pp. 1023-1027.

Lewis, James R. (1995): IBM Computer Usability Satisfaction Questionnaires: Psychometric Evaluation and Instructio. In International Journal of Human-Computer Interaction, 7 (1) pp. 57-78.

Lewis, James R. (1993): Problem Discovery in Usability Studies: A Models Based on the Binomial Probability Formula. In: Smith, Michael J., Salvendy, Gavriel (eds.) HCI International 1993 - Proceedings of the Fifth International Conference on Human-Computer Interaction - Volume 1 August 8-13, 1993, Orlando, Florida, USA. pp. 666-671.

Lewis, James R. (1993): Problem Discovery in Usability Studies: A Model Based on the Binomial Probability Formula. In: Proceedings of the Fifth International Conference on Human-Computer Interaction , 1993, . pp. 666-671.

Lewis, James R. (1993): Multipoint Scales: Mean and Median Differences and Observed Significance Levels. In International Journal of Human-Computer Interaction, 5 (4) pp. 383-392.

Lewis, James R. (1992): Psychometric Evaluation of the Post-Study System Usability Questionnaire: The PSSUQ. In: Proceedings of the Human Factors Society 36th Annual Meeting , 1992, . pp. 1259-1263.

Lewis, James R. (1991): A Rank-Based Method for the Usability Comparison of Competing Products. In: Proceedings of the Human Factors Society 35th Annual Meeting , 1991, . pp. 1312-1316.

Loricchio, David F., Lewis, James R. (1991): User Assessment of Standard and Reduced-Size Numeric Keypads. In: Proceedings of the Human Factors Society 35th Annual Meeting , 1991, . pp. 251-252.

Lewis, James R. (1991): An After-Scenario Questionnaire for Usability Studies: Psychometric Evaluation Over Three . In ACM SIGCHI Bulletin, 23 (4) pp. 79.

Lewis, James R. (1991): Psychometric Evaluation of an After-Scenario Questionnaire for Computer Usability Studies:. In ACM SIGCHI Bulletin, 23 (1) pp. 78-81.

Lewis, James R. (1990): The Iowa Silent Reading Test\'s Comprehension Section: Local Norms and Predictive Validity. In: D., Woods,, E., Roth, (eds.) Proceedings of the Human Factors Society 34th Annual Meeting , 1990, Santa Monica, USA. pp. 922-926.

Lewis, James R., Henry, Suzanne C., Mack, Robert L. (1990): Integrated Office Software Benchmarks: A Case Study. In: Diaper, Dan, Gilmore, David J., Cockton, Gilbert, Shackel, Brian (eds.) INTERACT 90 - 3rd IFIP International Conference on Human-Computer Interaction August 27-31, 1990, Cambridge, UK. pp. 337-343.

Lewis, James R. (1989): Pairs of Latin Squares to Counterbalance Sequential Effects and Pairing of Conditions and . In: Proceedings of the Human Factors Society 33rd Annual Meeting , 1989, . pp. 1223-1227.