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Publications, Presentations, Other Writings

Recent and selected works produced from KPR projects are presented below, followed by a more comprehensive listing of journal articles, conference papers, presentations, and other works. If you don't find what you're looking for, please contact us.

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Recent and Selected Works

  1. Koester HH, Arthanat S. (2017). Text Entry Rate of Access Interfaces Used by People with Physical Disabilities: A Systematic Review. Assistive Technology, ePub ahead of print.
  2. Koester HH, Simpson R. (2017). Enhancing Efficiency for People who Use Switch Scanning. Presentation at CSUN 2017 Conference, San Diego, CA.
  3. Koester HH, Arthanat S. (2017). Text Entry Rate of Access Interfaces Used by People with Physical Impairments.Proceedings of RESNA 2017 Conference, New Orleans, LA.
  4. Koester HH, Arthanat S. Public Data for Text Entry Rate of Access Interfaces used by People with Physical Disabilities.
  5. Koester HH, Arthanat S. (2016). Systematic Review of Text Entry Methods for People with Physical Impairments. Paper published in Proceedings of RESNA/NCART 2016 Conference, Arlington, VA.
  6. Koester HH, Mankowski J. (2015). Automatic Adjustment of Keyboard Settings Can Enhance Typing. Assistive Technology, 27(3): 136-46.
  7. Koester HH, Mankowski J. (2014). Automatic Adjustment of Mouse Settings to Improve Pointing Performance. Assistive Technology, 26(3): 119-128.
  8. Koester HH, Simpson R. (2014). A Method for Enhancing Text Entry Rate with Single-switch Scanning. Journal of Rehabilitation Research and Development, 51(6): 995-1012.
  9. Koester HH. (2014). ‘Aim’ Test Performance for Mouse Users without Impairments. Paper published in Proceedings of RESNA 2014 Annual Conference, Indianapolis, IN. Arlington, VA: RESNA Press.
  10. Koester HH, Simpson RC. (2014). A Method for Enhancing Text Entry Rate with Single-switch Scanning. Workshop presented at RESNA 2014 Annual Conference, Indianapolis, IN.
  11. Koester HH, Simpson R, Mankowski J. (2013). Software Wizards to Adjust Keyboard and Mouse Settings for People with Physical Impairments. Journal of Spinal Cord Medicine, 36(4): 300-12.
  12. Simpson R, Koester HH, LoPresti EF. (2010). Research in Computer Access Assessment and Intervention. Physical Medicine and Rehabilitation Clinics of North America, 21(1):15-32.

Full Listing

Journal Articles

  1. Koester HH, Arthanat S. (2017). Text Entry Rate of Access Interfaces Used by People with Physical Disabilities: A Systematic Review. Assistive Technology, ePub ahead of print.
  2. Koester HH, Mankowski J. (2015). Automatic Adjustment of Keyboard Settings Can Enhance Typing. Assistive Technology, 27(3): 136-46.
  3. Koester HH, Mankowski J. (2014). Automatic Adjustment of Mouse Settings to Improve Pointing Performance. Assistive Technology, 26(3): 119-128.
  4. Koester HH, Simpson R. (2014). A Method for Enhancing Text Entry Rate with Single-switch Scanning. Journal of Rehabilitation Research and Development, 51(6): 995-1012.
  5. Koester HH, Simpson R, Mankowski J. (2013). Software Wizards to Adjust Keyboard and Mouse Settings for People with Physical Impairments. Journal of Spinal Cord Medicine, 36(4): 300-12.
  6. Mankowski R, Simpson R, Koester HH. (2013). Validating a Model of Row-Column Scanning. Disability and Rehabilitation: Assistive Technology, 8(4):321-9. [abstract]
  7. Simpson R, Mankowski R, Koester HH. (2011). Modeling One-Switch Row-Column Scanning with Errors and Error Correction Methods. The Open Rehabilitation Journal, Vol. 4: 1-12.
  8. Simpson R, Koester HH, LoPresti EF. (2010). Research in Computer Access Assessment and Intervention. Physical Medicine and Rehabilitation Clinics of North America, 21(1):15-32.
  9. LoPresti E, Koester HH, Simpson R. (2008). Toward Automatic Adjustment of Pointing Device Configuration to Accommodate Physical Impairment. Disability and Rehabilitation: Assistive Technology, 3(4):221-235. [abstract]
  10. Simpson R, Koester HH, LoPresti E. (2007). Selecting an Appropriate Scan Rate: The .65 Rule. Assistive Technology, 19(2):51-58. [abstract]
  11. Koester HH, LoPresti E, Simpson R. (2007). Toward Automatic Adjustment of Keyboard Settings for People with Physical Impairments. Disability and Rehabilitation: Assistive Technology, 2(5):261-274. [abstract]
  12. Simpson R, Koester HH, LoPresti E. (2006). Evaluation of an Adaptive Row-Column Scanning System. Technology and Disability, 18(3): 127-138. [abstract]
  13. Koester HH. (2006). Factors that Influence the Performance of Experienced Speech Recognition Users. Assistive Technology, 18(1): 56-76.
  14. Koester HH. (2004). Usage, Performance, and Satisfaction Outcomes for Experienced Users of Speech Recognition. Journal of Rehabilitation Research and Development, 41(5): 739-754.
  15. Koester HH. (2002). User Performance with Speech Recognition Systems: A Literature Review. Assistive Technology, 13(2):116-30.
  16. Simpson R, Koester HH. (1999). Adaptive One-Switch Row-Column Scanning. IEEE Transactions on Rehabilitation Engineering, 7:4, 464-473. [abstract]
  17. Koester HH, Levine SP. (1998). Model Simulations of User Performance with Word Prediction. Augmentative and Alternative Communication, 14:01, 25-35.
  18. Koester HH, Levine SP. (1997). Keystroke-level Models for User Performance with Word Prediction. Augmentative and Alternative Communication, 13:4, 239-257.
  19. Koester HH, Levine SP. (1996). The Effect of a Word Prediction Feature on User Performance. Augmentative and Alternative Communication, 12:3, 155-168. [abstract]
  20. Koester HH, Levine SP. (1994). Modeling the Speed of Text Entry with a Word Prediction Interface. IEEE Transactions on Rehabilitation Engineering, 2:3, 177-187.
  21. Koester HH, Levine SP. (1994). Learning and Performance of Able-bodied Individuals using Scanning Systems with and without Word Prediction. Assistive Technology, 6:1, 42-54.
  22. Levine SP, Horstmann HM, Kirsch NL. (1992). Performance Considerations for People with Cognitive Impairment in Accessing Assistive Technologies. Journal of Head Trauma Rehabilitation, 7:3, 46-58.
  23. Horstmann HM, Levine SP. (1992). Modeling AAC User Performance: Response to Newell, Arnott, and Waller (1992). Augmentative and Alternative Communication, 8:2, 92-97.
  24. Horstmann HM, Levine SP. (1990). Modeling of User Performance with Computer Access and Augmentative Communication Systems for Handicapped People. Augmentative and Alternative Communication, 6:4, 231-241. [abstract]
  25. Horstmann HM, Levine SP, Kett RL. (1990). Commercial Software as the Basis for an Augmentative Communication System on a Personal Computer. Assistive Technology, 2:1, 19-26. [abstract]
  26. Chizinsky KA, Horstmann HM, Levine SP, Koester DJ. (1989). Modification of a Proportional Joystick to Incorporate Switch Outputs for Accessories. Assistive Technology, 1:4, 101-105. [abstract]
  27. Horstmann HM, Levine SP, Jaros LA. (1989). Keyboard Emulation for Access to IBM-PC Compatible Computers by People with Motor Impairments. Assistive Technology, 1:3, 63-70. [abstract]

Conference Papers

  1. Koester HH, Arthanat S. (2017). Text Entry Rate of Access Interfaces Used by People with Physical Impairments.Proceedings of RESNA 2017 Conference, New Orleans, LA.
  2. Koester HH, Arthanat S. (2016). Systematic Review of Text Entry Methods for People with Physical Impairments. Proceedings of RESNA/NCART 2016 Conference, Arlington, VA.
  3. Koester HH. (2014). ‘Aim’ Test Performance for Mouse Users without Impairments. Paper published in Proceedings of RESNA 2014 Annual Conference, Indianapolis, IN. Arlington, VA: RESNA Press.
  4. Koester HH, Mankowski J. (2012). Fully Automatic Adjustment for Double-click Settings. Proceedings of RESNA 2012 Conference, Baltimore, MD.
  5. Koester HH, Mankowski J. (2012). Making Custom Keyboard and Mouse Settings Portable. Proceedings of RESNA 2012 Conference, Baltimore, MD.
  6. Koester HH, LoPresti EF, Simpson R. (2011). Further Validation of the 'Aim' Test for Assessing a User's Mouse Skills. Proceedings of RESNA 2011 Annual Conference, Toronto, ON, Canada. Arlington, VA: RESNA Press.
  7. Koester HH, Mankowski J, LoPresti EF, Ashlock G, Simpson R. (2011). Software Wizards for Keyboard and Mouse Settings: Usability for End Users. Proceedings of RESNA 2011 Conference, Toronto, Canada.
  8. Koester HH, LoPresti EF, Mankowski J, Simpson R, Mankowski R, Ashlock G. (2009). Automatically Adjusting Pointing Device Settings Enhances User Double-Click Performance. Proceedings of AAATE 2009 Conference, Florence, Italy.
  9. Koester HH. (2009). Gathering and Applying Evidence in Computer Access Services. Proceedings of AAATE 2009 Conference, Florence, Italy.
  10. Koester HH, Simpson RC, Spaeth D, LoPresti E. (2007). Reliability and Validity of Compass Software for Access Assessment. Proceedings of RESNA 2007 Annual Conference, Phoenix, AZ. Arlington, VA: RESNA Press.
  11. Koester HH, LoPresti EF, Simpson RC. (2006). Measurement Validity for Compass Assessment Software. Proceedings of RESNA 2006 Annual Conference, Atlanta, GA. Arlington, VA: RESNA Press.
  12. Koester HH, LoPresti E, Simpson R. (2006). Factors Influencing User Performance with Pointing Devices. Proceedings of RESNA 2006 Annual Conference, Atlanta, GA. Arlington, VA: RESNA Press.
  13. Simpson R, Koester HH, LoPresti E. (2006). Selecting an Appropriate Scan Rate: The .65 Rule. Proceedings of RESNA 2006 Annual Conference, Atlanta, GA. Arlington, VA: RESNA Press.
  14. LoPresti EF, Koester HH, Simpson RC. (2006). Measuring Keyboard Performance for People with Disabilities. Proceedings of RESNA 2006 Annual Conference, Atlanta, GA. Arlington, VA: RESNA Press.
  15. Koester HH, LoPresti EF, Simpson RC. (2005). Toward Goldilocks' Pointing Device: Determining a "just right" gain setting for users with physical impairments. Proceedings of the ASSETS 2005 Conference, Baltimore, MD. New York:ACM.
  16. Koester HH. (2004). Speech Recognition vs. Non-speech Input Methods: Usage Patterns and Satisfaction. Proceedings of RESNA 2004 Annual Conference, Orlando, FL. Arlington, VA: RESNA Press.
  17. Koester HH. (2004). Statistical Identification of Factors that Influence Performance with Speech Recognition. Proceedings of RESNA 2004 Annual Conference, Orlando, FL. Arlington, VA: RESNA Press.
  18. Koester HH. (2003). Abandonment of Speech Recognition Systems by New Users. Proceedings of RESNA 2003 Annual Conference, Atlanta, GA. Arlington, VA: RESNA Press.
  19. Koester HH. (2003). Performance of Experience Speech Recognition Users. Proceedings of RESNA 2003 Annual Conference, Atlanta, GA. Arlington, VA: RESNA Press.
  20. Ashlock G, Koester HH, LoPresti E, McMillan W, Simpson R. (2003). User-centered Design of Software for Assessing Computer Usage Skills. Proceedings of RESNA 2003 Annual Conference, Atlanta, GA. Arlington, VA: RESNA Press.
  21. Koester HH, LoPresti E, Ashlock G, McMillan W, Moore P, Simpson R. (2003). Compass: Software for Computer Skills Assessment. Proceedings of CSUN 2003 International Conference on Technology and Persons with Disabilities, Los Angeles, CA, March 2003.
  22. LoPresti E, Koester HH, McMillan WW. (2002). Tools for Assessing Computer Access Skills. Proceedings of the ASSETS 2002 Conference, Edinburgh, Scotland. New York:ACM.
  23. Koester HH. (2002). User Performance with Speech Recognition Systems. Proceedings of RESNA 2002 Annual Conference, Minneapolis, MN. Arlington, VA: RESNA Press.
  24. Koester HH. (2002). A Pilot Study on User Performance with Speech Recognition Systems. Proceedings of RESNA 2002 Annual Conference, Minneapolis, MN. Arlington, VA: RESNA Press.
  25. Koester HH. (2002). A Method for Measuring Client Performance with Speech Recognition. Proceedings of RESNA 2002 Annual Conference, Minneapolis, MN. Arlington, VA: RESNA Press.
  26. Simpson RC, Koester HH. (2000). An Adaptive Word Prediction Interface. Proceedings of the AAAI Spring Symposium on Adaptive User Interfaces, Palo Alto, CA.
  27. Koester HH, Levine SP. (2000). User Performance with Continuous Speech Recognition Systems. Proceedings of RESNA 2000 Annual Conference, Orlando, FL. Arlington, VA: RESNA Press.
  28. Simpson R, Koester HH. (2000). Effect of System Configuration on User Performance with Word Prediction: Results for Able-Bodied Users. Proceedings of RESNA 2000 Annual Conference, Orlando, FL. Arlington, VA: RESNA Press.
  29. Koester HH, Simpson R. (2000). Effect of System Configuration on User Performance with Word Prediction: Results for Users with Disabilities. Proceedings of the RESNA 2000 Annual Conference, Orlando, FL. Arlington, VA: RESNA Press.
  30. Koester HH, McMillan WW. (1998). Usability Testing of Software for Assessing Computer Usage Skills. Proceedings of the RESNA '98 Annual Conference, Minneapolis. Arlington, VA: RESNA Press.
  31. Simpson RC, Koester HH. (1998). Further Exploration of Adaptive One-switch Row-column Scanning for Text Entry. Proceedings of RESNA '98 Annual Conference, Minneapolis. Arlington, VA: RESNA Press.
  32. Koester HH, McMillan WW. (1997). Software for Assessing Computer Usage Skill. Proceedings of RESNA '97 Annual Conference, Pittsburgh. Arlington, VA: RESNA Press.
  33. Simpson RC, Koester HH. (1997). Adaptive One-switch Row-column Scanning for Text Entry. Proceedings of RESNA '97 Annual Conference, Pittsburgh. Arlington, VA: RESNA Press.
  34. Koester HH. (1997). The Effect of a User's Search Strategy on Performance with Word Prediction. Proceedings of the RESNA '97 Annual Conference, Pittsburgh. Arlington, VA: RESNA Press.
  35. Simpson R, Levine SP, Koester HH. (1996) Using Probabilistic Reasoning to Develop Automatically Adapting Assistive Technology Systems. AAAI Fall Symposium on Developing AI Applications for People with Disabilities, Boston, MA.
  36. Koester HH, Levine SP. (1995). Validating Quantitative Models of User Performance with Word Prediction Systems. Proceedings of RESNA '95 Annual Conference, Vancouver. Arlington, VA: RESNA Press.
  37. Koester HH, Levine SP. (1995). Simulations of User Performance with Word Prediction. Proceedings of RESNA '95 Annual Conference, Vancouver. Arlington, VA: RESNA Press.
  38. Koester HH, Levine SP. (1994). Validation of a Keystroke-level Model for a Text Entry System Used by People with Disabilities. Proceedings of ASSETS '94: 1st Annual ACM Conference on Assistive Technologies, Marina del Rey, CA. New York: ACM.
  39. Koester HH, Levine SP. (1994). The Effect of a Word Prediction Feature on Text Generation Rate. Proceedings of the RESNA '94 Annual Conference, Nashville. Arlington, VA: RESNA Press.
  40. Koester HH, Levine SP. (1994). Quantitative Indicators of Cognitive Load during Use of a Word Prediction System. Proceedings of the RESNA '94 Annual Conference, Nashville. Arlington, VA: RESNA Press.
  41. Koester HH, Levine SP. (1993). A Model of Performance Cost versus Benefit for Augmentative Communication Systems. Proceedings of the 15th Annual Conference, IEEE Engineering in Medicine and Biology Society, San Diego.
  42. Koester HH, Levine SP. (1993). Methodological Decisions in the Study of Augmentative Communication Systems. Proceedings of RESNA '93 Annual Conference, Las Vegas. Arlington, VA: RESNA Press.
  43. Kirsch NL, Levine SP, Horstmann HM. (1992). Effects of Cognitive Impairment on Performance with Assistive Technologies. Proceedings of the RESNA '92 Annual Conference, Toronto. Arlington, VA: RESNA Press.
  44. Horstmann HM, Levine SP. (1992). Learning and Performance in Scanning Systems with and without Word Prediction -- report on a pilot study. Proceedings of the RESNA '92 Annual Conference, Toronto. Arlington, VA: RESNA Press.
  45. Horstmann HM, Levine SP. (1991). The Effectiveness of Word Prediction. Proceedings of the RESNA '91 Annual Conference, Kansas City. Arlington, VA: RESNA Press.
  46. Horstmann HM. (1990). Quantitative Modeling in Augmentative Communication -- A Case Study. Proceedings of the RESNA '90 Annual Conference, Washington, D.C. Arlington, VA: RESNA Press.

Selected Presentations

  1. Koester HH, Simpson R. (2017). Enhancing Efficiency for People who Use Switch Scanning. Presentation at CSUN 2017 Conference, San Diego, CA.
  2. Koester HH, Simpson RC. (2014). A Method for Enhancing Text Entry Rate with Single-switch Scanning. Workshop presented at RESNA 2014 Annual Conference, Indianapolis, IN.
  3. Koester HH. (2014, 2013). Software Development at KPR. Invited lecture for senior-level software engineering course, New York Institute of Technology, Mar 2014 and Nov 2013.
  4. Koester HH, DiGiovine C, Wenninger W. (2013). Be an AT Quant! Fun and excellence through the use of data. Workshop presented RESNA 2013 Annual Conference, Seattle WA.
  5. Koester HH. (2013). Optimizing Windows Mouse Settings. Show and Tell Session at RESNA 2013 Annual Conference, Seattle WA.
  6. Koester HH. (2014, 2013). Better computer access solutions through the use of evidence. Invited lecture for Occupational Therapy graduate course, Ohio State University, April 2014, Feb 2013.
  7. Koester HH. (2013). Optimizing Windows Keyboard and Mouse Settings to Accommodate Physical Impairment. Presentation at ATIA 2013 Annual Conference, Orlando.
  8. Koester HH. (2011). Better Computer Access Solutions through the Use of Evidence . Presentation given at the Closing the Gap Annual Conference, Minneapolis, MN.
  9. Koester HH, Lenker J, Prioli J, Schwartz P, Sophianopolous MB. (2011). Toward Best Practices in Computer Access Service Delivery. Presentation given at the RESNA 2011 Annual Conference, Toronto.
  10. Ashlock G, Koester HH, Simpson R. (2011). Quantitative Approaches to Computer Access. Presentation given at the RESNA 2011 Annual Conference, Toronto.
  11. Koester HH. (2011). Using Compass and KPR Wizards to Enhance Computer Access . Presentation given at the Closing the Gap Annual Conference, Minneapolis, MN.
  12. Koester HH. (2010). Using Compass and KPR Wizards to Enhance Computer Access . Presentation given at the ATIA 2010 Annual Conference, Chicago, IL.
  13. Koester HH. (2008). How to Gather Useful Evidence for Access Assessment. Presentation given at the CTG 2008 Annual Conference, Minneapolis.
  14. Koester HH, LoPresti EF. (2008). Tools and Methods for Assessment in Computer Access. Handout at the CTG 2008 Annual Conference, Minneapolis.
  15. Koester HH. (2008). How to Gather Useful Evidence for Access Assessment. Presentation given at the CSUN 2008 Annual Conference, Los Angeles.
  16. Koester HH, LoPresti EF. (2006). Tools and Methods for Assessment in Computer Access. Handout at the RESNA 2006 Annual Conference, Atlanta, GA.
  17. Koester HH. (2004). Evidence-Based Practice in Computer Access. Presentation at RESNA 2004 Conference.

Other Works

  1. Koester HH. Demo Videos on KPR's Youtube Channel. Includes videos for Compass Software, Pointing Wizard, and Keyboard Wizard.
  2. Koester HH. KPR's Blog. Includes varied posts on KPR activities and computer access in general.
  3. Koester HH. (2014). Adjusting Computer Input Device Settings Automatically to Meet User Needs. Executive Summary of Final Report to the National Institute of Disability and Rehabilitation Research, Phase I SBIR Grant.
  4. Koester HH. (2013). Adjusting Computer Mouse Settings Automatically to Accommodate User Needs. Final Report to the PVA Research Foundation, Grant #188858.
  5. Koester HH, Simpson R. (2013). Model- Based Software for Configuring Single-Switch Scanning Systems. Final Report to the National Institutes of Health, Phase I SBIR Grant #1R43HD068026-01A1.
  6. Koester HH, DiGiovine C, Craik S, Kneebone M. (2008). How to Gather Useful Evidence for Access Assessment. ARATA Newsletter, 41, Summer 2008, Australia.
  7. DiGiovine C, Koester HH. (2008). Gathering and applying evidence in computer access services. Article in Closing the Gap's Solutions resource.