Rice
FIS

FIS image header
  •  
  •  
  •  
  •  
  •  
Download 
Scholarly Interest Report
         
Philip T. Kortum
Associate Professor
 
e-mail:pkortum@rice.edu
 
  • B.S. Industrial Engineering (1985) University of Nebraska, Lincoln, NE
  • M.S. Industrial Engineering (1990) Northeastern University, Boston, MA
  • Ph.D. Biomedical Engineering (1994) University of Texas at Austin, Austin, TX
 
Primary Department
   Department of Psychology
Picture
 
Department Affiliations
 
  • Department of Psychology
  • Rice 360*: Institite of Global Health Technologies
  •  
    Websites
     Philip Kortum's webpage
     Website for Philip Kortum
     Phil Kortum homepage
     Homepage for Philip Kortum
     
    Research Areas
     Mobile computing, Voting Human Factors, Usability Assessment
     

    Kortum Research Interests

     

    My research focuses on the application of human perceptual data to the areas of telephony operations, voting, and web use. I am currently conducting research in 4 major areas: 


    1) Voting Human Factors


    The goal of this research is to understand how differt factors of the voting process impacts a users effectiveness, efficiency and satisfaction in the completion of the voting task. we aree examinining many facets of voting including voting for disabled users, the use of auditory displays (in lieu or as a supplemnt to) visual displays to vote, the use of smalll screen voting devices, such as smartphones, and the impact of high security measures on the usability of voting machines and the impact those measure have on user trust


    2) Interactive Voice Response (IVR) Systems


    The goal of this work is to understand the impact that the perceived persona of a prompt in an IVR has on user performance.  Research is currently being conducted to determine if the personification of voice prompts can systematically change the form and goodness of user response when they answer questions posed by the IVR. This research is currently focused on the effect that prompt voice persona may have on the response users give to IVR-based questionnaires. We have developed a collaboration with Dr. Charles Cleeland at the MD Anderson Cancer Center, in order to examine whether voices of different personas impact the responses users give to a pain assessment survey that is given to cancer patients and delivered over an IVR. The research is currently being extended to better understand how to construct Bayesian IVRs that can be more responsive to patient needs over repeated interactions.


    3) Mobile computing


    My interest in telephony also extends to mobile platforms as well. Mobile phone use has had tremendous growth in the last decade, and with the advent of high speed wireless data network, the phone has turned from a voice communications platform into a handheld mobile computing device. We are investigating how people use these powerful new mobile computing devices and determining the ways users integrate them into their overall computing needs. We are currently conducting longitudinal field studies with users in the field to understand these user patterns better. We are also conducting targeted laboratory experiments to better understand the usability and interfaces issues associated with these kinds of devices.


    4) Web Use


    Dr. Kortum continues to have an interest in how people use the internet to gain information. He is currently conducting research to determine how users perceive small changes in the global navigation structures over time. Large-scale change in web sites has been studied extensively, but little research exists on performance changes brought on by relatively small changes to web sites. These small changes are extremely common, as businesses, educational institutions and individuals maintain and modify their web sites. By understanding where users look and how they search for information, this research aims to understand how relatively small changes to a site's navigation structure might impact user performance.

     
    Teaching Areas
     Human Factors
     
    Selected Publications
     Refereed articles
     

    Holmes, D. & Kortum, P. (2016). Vote-by-Phone: An Investigation of a Usable and Accessible IVR Voting System. Journal of Accessibility and Design for All, 6(2), 102-124.

     
     

    Holmes, D. & Kortum, P. (2017). Alternative review screen design for electronic voting systems. International Journal of Technology and Human Interaction, 13(1), 82-99.

     
     

    Kortum, P. (in press). Has human factors and usability lost its mojo?  Journal of Usability Studies.

     
     

    Kortum, P. & Byrne, M.D. (2016). The importance of psychological science in a voter’s ability to cast a vote. Current Directions in Psychological Science, 25(6), 467-473.

     
     

    Peres, S. C., Kortum, P., Akladios, M., & Muddimer, A. (2016). Developing and validating a self-report assessment tool for software biomechanics. WORK: A Journal of Prevention, Assessment and Rehabilitation. Work, 53, 193–204.

     
     

    Acemyan, C. Z., Kortum, P., Byrne, M. D., & Wallach, D. S. (2015). From error to error: Why voters could not cast a ballot and verify their vote with Helios, Prêt à Voter, and Scantegrity II. Journal Of Election Technology and Systems, 3(2), 1-25.

     
     

    Acemyan, C. Z., Kortum, P., Byrne, M. D., & Wallach, D. S. (2015). Users’ mental models for three end-to-end voting systems: Helios, Prêt à Voter, and Scantegrity II. Human Aspects of Information Security, Privacy, and Trust - Lecture Notes in Computer Science, 9190, 463-474.

     
     

    Belton, M. G., Kortum, P., & Acemyan, C. Z. (2015). How hard can it be to place a ballot into a ballot box? Usability of ballot boxes in tamper-resistant voting systems. Journal of Usability Studies, 10(4), 129-139.

     
     

    Kortum, P., & Peres, S. C. (2015). Evaluation of home health care devices: Remote usability assessment. JMIR Human Factors, 2(1), e10.

     
     

    Kortum, P., & Sorber, M. (2015). Measuring the usability of mobile applications for phones and tablets. International Journal of Human-Computer Interaction, 31, 518-529.

     
     

    Rahmati, A., Shepard, C., Tossell, C., Zhong, L., & Kortum, P. (2015). Practical context awareness: Measuring and utilizing the context dependency of mobile usage. IEEE Transactions on Mobile Computing, 14(9), 1932-1946. 

     
     

    Tossell, C. C., Kortum, P., Shepard, C. W., Rahmati, A., & Zhong, L. (2015). Exploring smartphone addiction: Insights from long-term telemetric behavioral measures. International Journal of Interactive Mobile Technologies, 9(2), 37-43.

     
     

    Tossell, C. C., Kortum, P., Shepard, C. W., Rahmati, A., & Zhong, L. (2015). You can lead a horse to water but you cannot make him learn: Smartphone use in higher education. British Journal of Educational Technology, 46(4), 713-724.

     
     

    Zemla, J. C., Tossell, C. C., Kortum, P., & Byrne, M. D. (2015). A Bayesian approach to predicting website revisitation on mobile phones. International Journal of Human-Computer Studies, 83, 43-50.

     
     

    Acemyan, C.Z., Kortum, P., Byrne, M.D. & Wallach, D. (2014). Usability of Voter Verifiable End-to-end Voting Systems: Baseline Data for Helios, Prêt à Voter, and Scantegrity II. Journal of Election Technology and Systems, 2(3), 26-56.

     
     

    Campbell, B. Tossell, C.T., Byrne, M.D. & Kortum, P. (2014). Towards More Usable Electronic Voting: Testing the Usability of a Smartphone Voting System. Human Factors, 56(5), 973-985.

     
     

    Kortum, P. & Peres, S.C. (2014). The relationship between system effectiveness and subjective usability scores using the System Usability Scale. International Journal of Human-Computer Interaction, 30(7), 575-584.

     
     

    Rahmati, A., Shepard, C., Tossell, C., Zhong, L., Kortum, P., Nicoara, A. and Singh, J. (2014). Seamless TCP Migration on Smartphones without Network Support. IEEE Transactions on Mobile Computing 13(3),678-692 

     
     

    Bell, S., Benaloh, J., Byrne, M., DeBeauvoir, D., Eakin, B., Fisher, G., Kortum, P., McBurnett, N., Montoya, J., Parker, M., Pereira, O., Stark, P.B., Wallach D.S., & Winn, M. (2013). STAR-Vote: A Secure, Transparent, Auditable, and Reliable Voting System. Journal of Election Technology and Systems, 1(1), 18-37. 

     
     

    Bias, R.G., Kortum, P., Sauro, J. & Gillan, D. (2013). Clothing the naked Emperor: The unfulfilled promise of the science of usability. Interactions. November+December, 2013. pp 72-77.

     
     

    Evans, R. & Kortum, P. (2013). Increasing Accuracy of Video Quality Ratings through Direction of Attention and Training. Applied Cognitive Psychology, 27(5), 600-610.

     
     

    Glaser, D., Jain, S. and Kortum, P. (2013). On the benefits of a physician-facing tablet presentation of patient symptom data: comparing paper and electronic formats. BMC Medical Informatics and Decision Making, 13(99), 1-8.

     
     

    Kortum, P. (2013). Evaluating the Usability of Multimedia, Mobile and Network-based products. International Journal of Wireless Networks and Broadband Technologies, 2(3), 10-17.

     
     

    Kortum, P. & Aceymyan, C.Z. (2013). How Low Can You Go? Is the System Usability Scale Range Restricted? Journal of Usability Studies, 9(1), 14-24.

     
     

    Kortum, P. and Bangor, A. (2013). Usability Ratings for Everyday Products Measured With the System Usability Scale (SUS). International Journal of Human Computer Interaction, 29, 1-10.

     
     

    Tossell, C.C., Kortum, P., Shepard, C.W., Rahmati, A., Barg-Walkow, L. & Zhong, L. (2012). A Longitudinal Study of Emoticon Use in Text Messaging from Smartphones. Computers in Human Behavior, 28. 659-663.

     
     

    Tossell, C.C., Kortum, P., Shepard, C.W., Rahmati, A., and Zhong, L. (2012) An Empirical Analysis of Smartphone Personalization: Measurement and User Variability. Behaviour and Information Technology. 31(10), 995-1010.

     
     

    Tossell, C.C., Kortum, P., Shepard, C.W., Rahmati, A., and Zhong, L. (2012) Getting Real: A Naturalistic Methodology for Using Smartphones to Collect Mediated Communications. Advances in Human Computer Interaction, 2012 (815972). 1-10.

     
     

    Kortum, P., Peres, S.C. and Stallmann, K. (2011). Extensible Auditory Progress Bar Design: Performance and Aesthetics. International Journal of Human-Computer Interaction, 27(9), 864-884.

     
     

    Evans, R. and Kortum, P. (2010) The Impact of Voice Characteristics on User Response in an Interactive Voice Response System. Interacting with Computers 22(6), 606-614.

     
     

    Kortum, P. and Sullivan, M.A. (2010). The Effect of content desirability on subjective video quality ratings. Human Factors 52(1), 105-118.

     
     

    Shepard, C., Tossel, C., Rahmati, A., Zhong, L., and Kortum, P. (2010). LiveLab: Measuring Wireless Networks and Smartphone Users in the Field. ACM SIGMETRICS Performance Evaluation Review 38(3).

     
     

    Bangor, A., Kortum, P. and Miller, J.A. (2009) Determining what individual SUS scores mean: adding an adjective rating scale. Journal of Usability Studies, 4(3).

     
     

    Kortum, P., Grier, R. and Sullivan, M. (2009). DSL Self-installation: From Impossibility to Ubiquity. Interfaces, 80, 12-14.

     
     

    Scharff, L.V.F. and Kortum, P. (2009). When Links Change: How Additions and Deletions of Single Navigation Links Affect User Performance. Journal of Usability Studies, 5(1).

     
     

    Bangor, A., Kortum, P. and Miller, J.A. (2008) The System Usability Scale (SUS): An Empirical Evaluation. International Journal of Human-Computer Interaction, 24(6).

     
     

    Kortum, P., Bias, R.G., Knott, B.A. and Bushey, R.R. (2008). The Effect of Choice and Announcement Duration on the estimation of Telephone Hold Time. International Journal of Technology and Human Interaction. 4(4), 28-52.

     
     

    Kortum, P., Edwards, C. and Richards-Kortum, R. (2008). The Impact of Inaccurate Internet Health Information in a Secondary School Learning Environment. Journal of Medical Internet Research, 10(2): e17

     
     

    Bangor, A., Kortum, P. and Miller, J.A. (2008) The System Usability Scale (SUS): An Empirical Evaluation. International Journal of Human-Computer Interaction, 24(6).

     
     

    Kortum, P. T. and Geisler, W. S. (1995) Adaptation mechanisms in spatial vision II: Flash thresholds and background adaptation. Vision Research 35, pp 1595-1609.

     
     Books
     

    Kortum, P. (2016). Usability Assessment: How to measure the usability of products, services, and systems. Santa Monica, CA: HFES Press.

     
     Editor of books
     

    Kortum, P. (Ed.) (2008). HCI Beyond the GUI: Design for Haptic, Speech, Olfactory and other Non-Traditional Interfaces. Burlington, MA: Morgan Kaufmann.

     
     Book chapters
     

    Nelson, R. A., Tossell, C. C., & Kortum, P. (2015). Emoticon use in mobile communications :-) In Z. Yan (Ed.), Encyclopedia of Mobile Phone Behavior, pp1-11. Hershey, PA: IGI Global.

     
     

    Kortum, P. (2008) Human Factors.  In Davis, S.F. and Buskist, W. (Eds) 21st Century Psychology. Thousand Oaks, CA, Sage Publications.

     
     

    Kortum, P. (2008) Human Factors Assessment of Multi-media Products and Systems. In Pagani, M  (Ed).  Encyclopedia of Multimedia technology and Networking. 625-631. Hershey, PA. IGI Global.

     
     Kortum, P. (2008). Introduction to the Human Factors of Nontraditional Interfaces. In Kortum, P. (Ed.) HCI Beyond the GUI: Design for Haptic, Speech, Olfactory and other Non-Traditional Interfaces. Burlington, MA: Morgan Kaufmann.
     
     Grier, R., Kortum, P. and Miller, J. (2006) How users view web pages: An exploration of cognitive and perceptual mechanisms. In Zaphiris, P and Kurniawan, S. (Eds) Human Computer interaction Research in Web Design and Evaluation. Hershey, PA. Idea Group
     
     Kortum, P. (2007) Human Factors and Ergonomics. In Davis, S.F. and Buskist, W. (Eds) 21st Century Psychology. Thousand Oaks, CA, Sage Publications.
     
     Refereed conference papers
     

    Acemyan, C.Z. & Kortum, P. (2016). Can Voters Tell When Their Voting Method Is Secure? Effects of End-to-end Security and Security Theater on Perceptions of Voting System Security. Proceedings of the Human Factors and Ergonomics Society, 60(1), pp. 1219-1223. Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Kortum, P. and Acemyan, C.Z. (2016). The Relationship Between User Mouse-based Performance and Subjective Usability Assessments. Proceedings of the Human Factors and Ergonomics Society, 60(1), pp. 1174-1178. Santa Monica, CA: Human Factors and Ergonomics Society. 

     
     

    Acemyan, C. Z., & Kortum, P. (2015). Does the polling station environment matter? The relation between voting machine layouts within polling stations and anticipated system usability. Proceedings of the Human Factors and Ergonomics Society, 59(1), pp. 1066-1070. Santa Monica, CA: Human Factors and Ergonomics Society. 

     
     

    Gao, M. & Kortum, P. (2015). The relationship between subjective and objective usability metrics for home healthcare devices. Proceedings of the Human Factors and Ergonomics Society, 59(1), pp. 1001-1005. Santa Monica, CA: Human Factors and Ergonomics Society. 

     
     

    Acemyan, C.Z. & Kortum, P. (2014). To Verify or Not to Verify, That is The Question:  Voters' use and expectations of voting verification methods. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society. pp. 1295-1299.

     
     

    Callen, A. & Kortum, P. (2014). The Relationship Between Task-level and Test-level System Usability Scale Scores. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society. pp. 1139-1143.

     
     

    Kortum, P., Hebl, M.R., Oswald, F.L. (2014). Applying Usability Measures to Assess Textbooks. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society. pp. 1346-1350.

     
     

    Acemyan, C.Z., Kortum, P. & Payne, D. (2013). Do Voters Really Fail to Detect Changes to their Ballots? An Investigation of Voter Error Detection. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society. pp. 1405-1409.

     

     
     

    Grier, R..A., Bangor, A., Kortum, P. and Peres, S.C. (2013). The System Usability Scale Beyond Standard Usability Testing. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society. pp. 187-191.

     
     

    Holmes, D. and Kortum, P. (2013). Vote-By-Phone: Usability Evaluation of an IVR Voting System. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society. pp. 1308-1312.

     
     

    Kortum, P. & Johnson, M. (2013). The Relationship Between Levels of User Experience with aProduct and Perceived System Usability. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society. pp. 197-201.

     
     

    Evans, R. and Kortum, P. (2012). He says, She Says. Does Voice Affect Usability? Proceedings of the Human Factors and Ergonomics Society,Santa Monica,CA: Human Factors and Ergonomics Society. pp. 1486-1490.

     
     

    Kortum, P. and Scharff, L.V.S. (2012). Where’s my webpage? How aesthetic changes affect user performance when critical navigation links change. Proceedings of the Human Factors and Ergonomics Society,Santa Monica,CA: Human Factors and Ergonomics Society. pp. 1599-1603.

     
     

    Rahmati, A., Shepard, C., Tossell, C., Zhong, L., and Kortum, P. (2012). Exploring iPhone Usage: The Influence of Socioeconomic Differences on Smartphone Adoption, Usage and Usability. ACM SIGCHI's International Conference on Human-Computer Interaction with Mobile Devices and Services, MobileHCI 2012.

     
     

    Tossell, C.C., Kortum, P., Rahmati, A., Shepard, C.W., & Zhong, L. (2012). Characterizing web use on smartphones.  Human Factors in Computing Systems: Proceedings of CHI 2012, (pp 2769-2778).  New York: Association for Computing Machinery.

     
     

    Ziegler, C. and Kortum, P. (2012). The Relationship Between Trust and Usability in Systems. Proceedings of the Human Factors and Ergonomics Society,Santa Monica,CA: Human Factors and Ergonomics Society. pp. 1842-1846.

     
     

    Campbell, B. Tossell, C.T., Byrne, M.D. and Kortum, P. (2011). Voting on a Smartphone: Evaluating the Usability of an Optimized Voting System for Handheld Mobile Devices. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Garcia, A., Peres, S.C, Ritchey, P., Kortum, P. and Stallmann, K. (2011). Auditory Progress Bars: Estimations of time remaining. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Kortum, P. and Scharff, L.V.F. (2011). Web site familiarity and its impact on user performance when critical web page navigation links change. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Peres, S.C., Kortum, P., Muddimer, A., Akladios, M. and Napit, S. (2011). Geophysical Software Ergonomics: Methods for effective evaluation. Proceedings of the Society of Exploration Geophysicists SEG11.

     
     

    Tossell, C.T., Jardina, J.R., Kortum, P., Peres S.C., Shepard, C.W., Rahmati, A, and Zhong, L. (2011). Effects of socioeconomic diversity on iPod Touch device usage in real-world environments. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Kortum, P., Peres, S.C. and Stallmann, K. (2010). Mental Workload Measures of Auditory Stimuli Heard During Periods of Waiting. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Tossell, C., Kortum, P., Shepard, C., Zhong, L. and Rahmati, A. (2010).  Assessing the Performance of Common Tasks on Handheld Mobile Computers.  Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Evans, R. and Kortum, P. (2009). Voice Personalities Inducing Trust and Satisfaction in a Medical Interactive Voice Response System.  Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Grier, R.A., Lizza1, G., Linegang, M. and Kortum, P. (2009). Requirements: The Starting Point for Good Human Factors Design. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Kortum, P. and Scharff, L.V.F. (2009). How Subtle Changes in Navigation Links Affect Users' Search Strategies. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Peres, S.C., Nguyen, V., Kortum, P., Akladios, M., Wood, S.B. and Muddimer, A. (2009). Software Ergonomics: Relating Subjective and Objective Measures. CHI 2009 Extended Abstracts on Human Factors in Computing Systems. New York; Association of Computing Machinery.

     
     

    Su, A.Y. and Kortum, P. (2009). Ethnographic study of on-hold telephone caller multi-tasking behavior. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA: Human Factors and Ergonomics Society.

     
     

    Wood, S. B., Peres, S.C., Kortum, P., Himanga, J., Akladios, M., Muddimer, A., and Kozman, J. (2009). Ergonomics, Software and Geophysical Interpretation. Proceedings of the International Petroleum Technical Conference, Richardson , TX: Society of Petroleum Engineers.

     
     Kortum, P., Ling, A., Su, A., Peres, S.C. and Stallman, K. (2008). Subjective Workload Assessment for On-hold Telephone Stimuli. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA.: Human Factors and Ergonomics Society.
     
     Stallmann, K., Peres, S.C., Kortum, P. and (2008). Auditory Stimulus Design: Musically Informed. Proceedings of the International Community for Auditory Display, ICAD 2008.
     
     Sullivan, M., Pratt, J. and Kortum, P. (2008). Practical Issues in Subjective Video Quality Evaluation: Human Factors vs. Psychophysical image quality evaluation. Proceedings of the First International Conference on Designing Interactive User uxTV2008. San Francisco, CA. October 22-24, 2008.
     
     

    Kortum, P. and Peres, S.C. (2007) A Survey of Secondary Activities of Telephone Callers Who are Put on Hold. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA. Human Factors and Ergonomics Society

     
     

    Kortum, P. and Scharff, L.V. (2007) The Effect of Small Changes in Web Page Navigation Links on the Performance of Users Who Revisit Sites. Proceedings of the Human Factors and Ergonomics Society, Santa Monica, CA. Human Factors and Ergonomics Society

     
     

    Peres, S.C., Kortum, P. and Stallmann, K. (2007) Auditory Progress Bars: Preference, Performance and Aesthetics. Proceedings of the International Community for Auditory Display, ICAD 2007.

     
     

    Knott, B.A. and Kortum, P. (2006) Personification of voice user interfaces: impacts on user performance. Proceedings of the 50th Annual Human Factors and Ergonomics Society. pp 599-603, Santa Monica, CA, Human Factors and Ergonomics Society.

     
     

    Kortum, P. and Motowidlo, S. J. (2006) It takes more than technical knowledge to be an effective human factors engineer. Proceedings of the Human Factors and Ergonomics Society. pp 1958-1962, Santa Monica, CA, Human Factors and Ergonomics Society.

     
     

    Kortum, P. and Peres, S.C. (2006) An exploration of the use of complete songs as auditory progress bars. Proceedings of the Human Factors and Ergonomics Society. pp 2071-2075, Santa Monica, CA, Human Factors and Ergonomics Society.

     
     

    Knott, B.A., Kortum, P., Bushey, R. and Bias, R. (2004) The Effect of Music Choice and Announcement Duration on Subjective Wait Time for Call Center Hold Queues. Proceedings of the Human Factors and Ergonomics Society 48th Annual Meeting, pp 740-744, Santa Monica, CA, Human Factors and Ergonomics Society.

     
     

    Kortum, P. and Sullivan, M.A. (2004) Content is King: The Effect of Content on the Perception of Video Quality. Proceedings of the Human Factors and Ergonomics Society, pp 1910-1914, Santa Monica, CA, Human Factors and Ergonomics Society.

     
     

    Kortum, P.T. and Geisler, W.S. (1996) Implementation of a foveated image-coding system for bandwidth reduction of video images. In B. Rogowitz and J. Allebach (Eds.) Human Vision and Electronic Imaging. SPIE Proceedings, 2657, pp 350-360.

     
     Conference papers
     

    Holmes, D. & Kortum, P. (2012). IVR Voting System Usability. 9thHouston Human Factors and Ergonomics Conference,Houston,TX.

     
     

    Holmes, D. & Kortum, P. (2012). Effects of Voice Type on Performance. Southwestern Psychological Association Conference.

     
     

    Jain, S. & Kortum, P. (2012). Using cognitive design principles to maximize effectiveness and efficiency of physician-facing interfaces. Southwestern Psychological Association Conference.

     
     

    Tossell, C.C., Kortum, P., Shepard, C.W., Rahmati, A., and Zhong, L. (2012). The Next Step in MobileSearch: Integration. ACM SIGCHI's International Conference on Human-Computer Interaction with Mobile Devices and Services, MobileHCI 2012, Panel.

     
     

    Ziegler, C. and Kortum, P. (2012). Does the Voting Environment Affect Perceived System Usability and Trust?:  The relationship between DRE placement within a polling station and voters  perceptions of usability, trust, and preference. 9thHouston Human Factors and Ergonomics Conference,Houston,TX. *(Winner, best student research presentation)

     
     

    Ziegler, C. and Kortum, P. (2012). The Relationship Between Trust and Usability in Voting Systems. Southwestern Psychological Association Conference.

     
     

    Evans, R. and Kortum, P. (2010). The impact of voice characteristics on user response in an interactive voice response system. 7th Houston Human Factors and Ergonomics Society Conference, Houston, TX.

     
     

    Tossell, C., Campbell, B. and Kortum, P. (2010). An Impoverished Voting Interface Design. 7th Houston Human Factors and Ergonomics Society Conference, Houston, TX.

     
     

    Su, A. and Kortum, P. (2009) Ethnographic study of on-hold caller multitasking behavior.  6th Houston Human Factors and Ergonomics Society Conference, Houston, TX.

     
     

    Nguyen, V., Megasari, A., Amos, A., Romine, A., Peres S.C., Akladios, M., Kortum, P. and Ziegler, C. (2008). Software Ergonomics Assessment Using Subjective and Objective Tools: A Literature Review. Texas Regional Human Factors and Ergonomics Society Conference, Austin, TX.

     
     

    Hammons, D. and Kortum, P. (2007) Response Bias in a Medical IVR System. 4th Houston Human Factors and Ergonomics Society Conference, Houston, TX.

     
     

    Scharff, L.V.F. and Kortum, P. (2008). The Immediate Benefit of Disappearing Web Links. Texas Regional Human Factors and Ergonomics Society Conference, Austin, TX.

     
     

    Su, A. and Kortum, P. (2007) Effect of Musical Auditory Progress Bars on Hold Time estimation.  4th Houston Human Factors and Ergonomics Society Conference, Houston, TX.

     
     

    Kortum, P. T. and Geisler, W. S. (1996) Search performance in natural scenes: The role of peripheral vision. Investigative Ophthalmology and Visual Science, Supp. (abstract)

     
     

    Kortum, P. T. and Geisler W. S. (1994) Flash-on-flash contrast sensitivity functions: multiplicative and subtractive mechanisms. Presented at the 12th Houston Conference on Biomedical Engineering Research, Houston, TX.

     
     

    Kortum, P. T. and Geisler W. S. (1994) Light Adaptation Mechanisms in Spatial Target Detection. Investigative Ophthalmology and Visual Science, Supp. (abstract)

     
     

    Kortum, P. T. and Geisler W. S. (1994) The time course of multiplicative and subtractive mechanisms in spatial vision. Journal of the Optical Society of America Technical Digest. (abstract)

     
     

    Kortum, P. T. and Geisler W. S. (1993) Flash-on-flash contrast sensitivity functions: multiplicative and subtractive mechanisms. Journal of the Optical Society of America Technical Digest. (abstract)

     
     

    Kortum, P. T. and Geisler W. S. (1992) Contrast sensitivity functions measured on flashed backgrounds in the dark-adapted eye. Journal of the Optical Society of America Technical Digest. (abstract)

     
     Other
     

    Benaloh, J., Byrne, M., Kortum, P., McBurnett, N., Pereira, O., Stark, P.B. & Wallach, D.S. (2012). STAR-Vote: A Secure, Transparent, Auditable, and Reliable Voting System. eprint arXiv:1211.1904

     
     

    Kortum, P. T. (2012) Academic careers Workshop Panelist. Southwestern Psychological Association Conference.

     
     

    Rahmati, A., Shepard, C., Tossell, C., Zhong, L. & Kortum, P. (2012) Practical context awareness: measuring and utilizing the context dependency of mobile usage.  Rice University Technical Report 2012-08-31, August 2012.

     
     

    Wallach, D., Wagner, D., Stark, P.B. & Kortum, P. (2012).  The Center for Information Technology Policy at Princeton Symposium, E-voting Risk and Opportunity. Panelist on the topic The Future of E-Voting – Remote, Internet-Based, and Secure?  Ed Felton, Moderator. Available on-line at  http://youtu.be/1Z6JW1t_sFI

     
    Presentations
     Conference abstracts
     

    Payne, D.A. & Kortum, P. (2013). Is There a Benefit to Delaying the Introduction of Performance Supports?: An Exploration of Predictive Spell-Check. 10thHouston Human Factors and Ergonomics Conference,Houston,TX. *(Winner, best student research poster)

     
     Invited Talks
     

    "Kortum, P. (2011). Everyday Usability. Presentation at World Usability Day, Rice University.."

     
     Lectures
     

    "Akladios, M, Peres, S.C., Kortum, P., Himanga J.C. and Muddimer, A. (2011) Objective Measures for Evaluating Software Ergonomics. IIE Applied Ergonomics Conference, Orlando, FL.."

     
     

    "Peres, S.C., Kortum, P., Muddimer, A., Akladios, M and Himanga J.C. (2011) Software Ergonomics. 2nd Texas Regional Human Factors and Ergonomics Society Conference, Clearlake, TX.."

     
     Posters
     

    "Barg-Walkow, L.H., Tossell, C.T. and Kortum, P. (2011). Smartphone Emoticon Usage. 2nd Texas Regional Human Factors and Ergonomics Society Conference, Clearlake, TX.."

     
     

    "Holmes, D. and Kortum, P. (2011). Usability of IVR Voting Systems. 2nd Texas Regional Human Factors and Ergonomics Society Conference, Clearlake, TX.."

     
     

    "Evans, R. and Kortum, P. (2010). The impact of voice characteristics on user response in an interactive voice response system. 7th Houston Human Factors and Ergonomics Society Conference, Houston, TX.."

     
     

    "Tossell, C., Campbell, B. and Kortum, P. (2010). An Impoverished Voting Interface Design. 7th Houston Human Factors and Ergonomics Society Conference, Houston, TX.."

     
     

    "Su, A. and Kortum, P. (2009) Ethnographic study of on-hold caller multitasking behavior.  6th Houston Human Factors and Ergonomics Society Conference, Houston, TX.."

     
     

    "Scharff, L.V.F. and Kortum, P. (2008). The Immediate Benefit of Disappearing Web Links. 1st Texas Regional Human Factors and Ergonomics Society Conference, Austin, TX.."

     
     Seminar Speaker
     

    Kortum, P. (2013). The intersection between Social Science and Engineering. Presentation to the Rice Gateway Study of Leadership, Houston, TX

     
     Session Chair
     

    "Posters with Fellows (Proposoed, Developed and Chaired inaugural year)."

     
     Workshops
     

    Kortum, P. (2013). Hands-on demonstrations for teaching statistics. Southwest Psychological Association Conference,Fort WorthTexas.

     
    Editorial Positions
     Member of the Editorial Board, Journal of Election Technology and Systems. (2013 - 2015)

     Member of the Editorial Board, Journal of Usability Studies. (2014 - 2016)

    Supervised Theses & Dissertations
     Philip Chung, Ph.D. Changing the Interface with Minimal Disruption: The Roles of Layout and Labels. (2006) (Thesis Committee Member)

     Daniel Smith, Ph.D. Effectiveness of warning labels. (2007) (Thesis Committee Member)

     Sarah Evertt, Ph.D. The Usability of Electronic Voting Machines and How Votes Can Be Changed Without Detection. (2007) (Thesis Committee Member)

     Kristen Greene, MS Usability of New Electronic Voting Systems and Traditional Methods: Comparisons Between Sequential and Direct Access Electronic Voting Interfaces, Paper Ballots, Punch Cards, and Lever Machines. (2008) (Thesis Committee Member)

     Ruth Johnson, Ph.D. Visual Influences on Electrotactile Processing: Localizing and Sequencing Crossmodal Interactions . (2008) (Thesis Committee Member)

     Melanie Hamel, Ph.D. Investigating Contour Integration Using Ideal Observe Response Classification, and Natural Image Statistics. (2008) (Thesis Committee Member)

     Minmin Yang, Ph.D. A Multi-Faceted Model on the Consequences of the Sample Size Choice in Usability Testing. (2008) (Thesis Committee Member)

     Rochelle Evans, MS The Impact of Voice Characteristics on User Response in an Interactive Voice Response System. (2009) (Thesis Director)

     Frank Tamborello, Ph.D. Routine Procedural Memory and its Interactions with Perceptual-Motor Processes.. (2009) (Thesis Committee Member)

     Sebastian Thomas, MS The influence of the tone of feedback prompts on the learning behavior and satisfaction of university students in a multiple cue probability learning task. (2010) (Thesis Committee Member)

     Bryan Campbell, MS Is Straight Party Voting Confusing? Implications for Voting System Usability. (2010) (Thesis Committee Member)

     Andy Su, MS The effect of secondary tasks and stimulus type on ratings of telephone hold workload. (2010) (Thesis Director)

     Elizabeth Gentry, Ph.D. Listeners ability to identify nationality based on accent. (2010) (Thesis Committee Member)

     Daniel Glasier, Ph.D. Not yet specified. (2011) (Thesis Committee Member)

     Chad Tossell, Ph.D. Human factors issues of Mobile computing. (2012) (Thesis Director)

     Chad Tossell, PhD An Empirical Analysis of Internet Use on Smartphones: Characterizing Visit Patterns and User Differences. (2012) (Thesis Director)

     Nicole Howie, The generalizability of cognitive modeling parameters for older adults. (Thesis Committee Member)

     Melissa Gallagher, Modeling Password Entry on Mobile Devices: Please check your password and try again. (Thesis Committee Member)

     Claudia Acemyan, System Usability and User Mental Models of Three Verifiable, End-to-end Voting Methods: Helios, Prêt à Voter, and Scantegrity II. (Thesis Director)

     Danae Holmes, Checking Your Answers: An Investigation of DRE Review Screen Design. (Thesis Director)

     Andy Su (MS), MS The Effect of Secondary Tasks and Stimulus Type on Ratings of Telephone Hold Workload. (Thesis Director)

     Rochelle Evans (Ph.D.), Ph.D. Why Does Content Desirability Impact Subjective Video Quality Ratings and What can be Done About it?. (Thesis Director)

     Danae Holmes, MS Vote By Phone: Usability of an IVR Voting System with Adjustable Audio Speed,. (Thesis Director)

     Ahmad Rahmati, PhD Context in Mobile System Design: Characterization, Theory, and Implications. (Thesis Committee Member)

     Sebastian Thomas, PhD The impact of Feedback Tone, Grammatical Person and Presentation Mode on Performance and Preference in a Computer-based Learning Task. (Thesis Committee Member)

     Melissa Galagher, MS Modeling Curved Movement. (Thesis Committee Member)

     Nicloe Howie, MS The Effect of Response Modality on Task Performance When Using an Interactive Voice Response System for Older and Younger Adults. (Thesis Committee Member)

     Bryan Campbell, PhD The Usability Implications of Long Ballot Content for Paper, Electronic, and Mobile Voting Systems. (Thesis Committee Member)

     Clayton Stanley, Comparing vector-based and ACT-R memory models using large-scale datasets. (Thesis Committee Member)

     Jeff Zelma, Factors Influencing Speed-Accuracy Tradeoffs in Decision Making. (Thesis Committee Member)

     Jill Piner, Ph.D The design and assessment of an accessible audio voting system. (Thesis Committee Member)

    Awards, Prizes, & Fellowships
     Cletis Booher Human Factors and Ergonomics Society Service Award, Human Factors and Ergonomics Society Houston Chapter

     Sarah A. Burnett Superior Teaching Award, 2015,

     Sophia Meyer Farb Phi Beta Kappa Award for Teaching,

    Positions Held
     President, Houston Chapter, Human Factors and Ergonomics Society. (2008 - 2008)

     President, Houston Chapter, Human Factors and Ergonomics Society. (2007 - 2007)

     Chair, Human Factors and Ergonomics Society Communications Technical Group. (2007 - 2007)

     Chair, Communications Technical Group, Human Factors and Ergonomic Society. (2008 - 2008)

     Executive Commitee member, Texas regional Human Factors Conference. (2008 - 2008)