Philip Kortum
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View article: From Childhood to Independence: A Needs Assessment for mHealth Interventions for Women with Autism and Their Caregivers
From Childhood to Independence: A Needs Assessment for mHealth Interventions for Women with Autism and Their Caregivers Open
The transition to adulthood is a pivotal life stage for women diagnosed with Autism Spectrum Disorder (ASD) that is marked by challenges which include, but are not limited to, the transition from pediatric to adult healthcare, securing emp…
View article: Check it to Protect it: Understanding the Behaviors Driving Ballot Verification
Check it to Protect it: Understanding the Behaviors Driving Ballot Verification Open
This study sought to understand the factors influencing voters to verify their paper ballots produced by an electronic Ballot Marking Device (BMD). To tackle this question, 60 undergraduate students from Rice University participated in moc…
View article: Explaining How to Interpret a Usability Survey May Enhance Internal Reliability Without Negatively Influencing Responses
Explaining How to Interpret a Usability Survey May Enhance Internal Reliability Without Negatively Influencing Responses Open
A great challenge to employing questionnaires is ensuring that respondents understand them. One possible strategy is to explain the meaning of items but there is a risk in biasing respondents’ answers. In this study, we assessed how explai…
View article: Stop Hiding My Controls: Hidden Interface Controls Are Affecting Usability
Stop Hiding My Controls: Hidden Interface Controls Are Affecting Usability Open
View article: A Formative Usability Study Evaluating a Decision Aid for Caregivers of Incapacitated Patients
A Formative Usability Study Evaluating a Decision Aid for Caregivers of Incapacitated Patients Open
Families making medical decisions for an incapacitated loved one need to process medical information for various care pathways while balancing different perspectives and experiencing distress. A decision aid tool to help family members mak…
View article: Emergence of Paper-Digital Systems: A Usability Evaluation of Single-Page Versus Multipage Digital Instructions in a Ballot Mailing Task
Emergence of Paper-Digital Systems: A Usability Evaluation of Single-Page Versus Multipage Digital Instructions in a Ballot Mailing Task Open
Findings from previous research that assessed the usability of single-page and multipage digital interfaces in purely digital interactions indicated that the single-page format is more efficient than its multipage counterpart. This researc…
View article: A Tension: Fortifying Usability While Safeguarding Voter Independence in Military Voting Solutions
A Tension: Fortifying Usability While Safeguarding Voter Independence in Military Voting Solutions Open
Absentee voting presents a unique challenge for U.S. uniformed service members, as they often struggle to request and return absentee ballots while deployed, sometimes stationed far from their registered voting area. This research evaluate…
View article: 86. The Effects of the Healthy Texas Women Application Change on Program Enrollment and Patient and Provider User Experience Among Adolescents and Young Adults
86. The Effects of the Healthy Texas Women Application Change on Program Enrollment and Patient and Provider User Experience Among Adolescents and Young Adults Open
View article: Avoid equipment graveyards: rigorous process to improve identification and procurement of effective, affordable, and usable newborn devices in low-resource hospital settings
Avoid equipment graveyards: rigorous process to improve identification and procurement of effective, affordable, and usable newborn devices in low-resource hospital settings Open
Background Millions of newborns die annually from preventable causes, with the highest rates occurring in Africa. Reducing neonatal mortality requires investment to scale hospital care, which includes providing hospitals with appropriate t…
View article: Can Voters Detect Errors on Their Printed Ballots? Absolutely
Can Voters Detect Errors on Their Printed Ballots? Absolutely Open
There is still debate on whether voters can detect malicious changes in their printed ballot after making their selections on a Ballot Marking Device (BMD). In this study, we altered votes on a voter's ballot after they had made their sele…
View article: The Trust in Voting Systems (TVS) Measure
The Trust in Voting Systems (TVS) Measure Open
It is essential to democracy that voters trust voting systems enough to participate in elections and use these systems. Unfortunately, voter trust has been found to be low in many situations, which could detrimentally impact human-computer…
View article: Bad Tools Hurt: Lessons for teaching computer security skills to undergraduates
Bad Tools Hurt: Lessons for teaching computer security skills to undergraduates Open
Understanding why developers continue to misuse security tools is critical to designing safer software, yet the underlying reasons developers fail to write secure code are not well understood. In order to better understand how to teach the…
View article: A Comparison of Presentation Mediums for the Study of Trust in Autonomous Vehicles
A Comparison of Presentation Mediums for the Study of Trust in Autonomous Vehicles Open
The purpose of this study is to compare presentation methods for use in the validation of the Trust in Selfdriving Vehicle Scale (TSDV), a questionnaire designed to assess user trust in self-driving cars. Previous studies have validated tr…
View article: How Human Factors Can Help Preserve Democracy in the Age of Pandemics
How Human Factors Can Help Preserve Democracy in the Age of Pandemics Open
Objective To describe user-centered voting systems that would support the safe conduct of voting in a pandemic environment. Background The COVID-19 pandemic has complicated our democratic processes. Voters and poll workers feel threatened …
View article: Voter Verification of BMD Ballots Is a Two-Part Question: Can They?\n Mostly, They Can. Do They? Mostly, They Don't
Voter Verification of BMD Ballots Is a Two-Part Question: Can They?\n Mostly, They Can. Do They? Mostly, They Don't Open
The question of whether or not voters actually verify ballots produced by\nballot marking devices (BMDs) is presently the subject of some controversy.\nRecent studies (e.g., Bernhard, et al. 2020) suggest the verification rate is\nlow. Wha…
View article: Voter Verification of BMD Ballots Is a Two-Part Question: Can They? Mostly, They Can. Do They? Mostly, They Don't
Voter Verification of BMD Ballots Is a Two-Part Question: Can They? Mostly, They Can. Do They? Mostly, They Don't Open
The question of whether or not voters actually verify ballots produced by ballot marking devices (BMDs) is presently the subject of some controversy. Recent studies (e.g., Bernhard, et al. 2020) suggest the verification rate is low. What i…
View article: An examination of the effort hypothesis for the perceived strength of passwords
An examination of the effort hypothesis for the perceived strength of passwords Open
Previous work has examined whether keyboards that have multiple levels of entry (e.g., soft keyboards, found on mobile devices) increase users’ perceptions of password security. That work found that passwords that required greater numbers …
View article: Summative Usability Assessments of STAR-Vote: A Cryptographically Secure e2e Voting System That Has Been Empirically Proven to Be Easy to Use
Summative Usability Assessments of STAR-Vote: A Cryptographically Secure e2e Voting System That Has Been Empirically Proven to Be Easy to Use Open
Background: From the project’s inception, STAR-Vote was intended to be one of the first usable, end-to-end (e2e) voting systems with sophisticated security. To realize STAR-Vote, computer security experts, statistical auditors, human facto…
View article: Vote-by-Phone: an investigation of a usable and accessible IVR voting system
Vote-by-Phone: an investigation of a usable and accessible IVR voting system Open
One of the main goals of the Help America Vote Act (HAVA) was to ensure that voters with disabilities could vote independently. However, the current state of most voting methods does not allow for independent voting for everyone. In respon…
View article: Evaluation of Home Health Care Devices: Remote Usability Assessment
Evaluation of Home Health Care Devices: Remote Usability Assessment Open
A large database of usability scores for home health care devices collected using this remote methodology would be beneficial for physicians, patients, and their caregivers.
View article: Exploring Smartphone Addiction: Insights from Long-Term Telemetric Behavioral Measures
Exploring Smartphone Addiction: Insights from Long-Term Telemetric Behavioral Measures Open
This study examined smartphone user behaviors and their relation to self-reported smartphone addiction. Thirty-four users who did not own smartphones were given instrumented iPhones that logged all phone use over the course of the year-lon…
View article: From Error to Error: Why Voters Could not Cast a Ballot and Verify Their Vote With Helios, Prêt à Voter, and Scantegrity II
From Error to Error: Why Voters Could not Cast a Ballot and Verify Their Vote With Helios, Prêt à Voter, and Scantegrity II Open
The aim of this paper is to identify user errors, and the related potential design deficiencies, that contributed to participants failing to vote cast and vote verify across three end-to-end voting systems: Helios, Prêt à Voter, and Scante…