Libby Hemphill

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Recent Grants

Grant: Close

Developing Evidence-based Data Sharing and Archiving Policies

Open Date: 2019-12-01

Close Date: 2022-11-30

Grant: Close

FW-HTF-RM: Collaborative Research: Augmenting Social Media Content Moderation

Open Date: 2019-10-01

Close Date: 2022-09-30

Grant: Close

CICI: RDP: Open Badge Researcher Credentials for Secure Access to Restricted and Sensitive Data

Open Date: 2018-09-01

Close Date: 2020-08-31

Grant: Close

CyberTraining: CIU: Preparing the Public Sector Research Workforce to Impact Communities through Data Science

Open Date: 2018-09-01

Close Date: 2021-08-31

Grant: Close

CHS: Small: Understanding and Designing Information Communication Technologies to Improve Communities

Open Date: 2017-09-01

Close Date: 2019-08-31

Articles (12)

As content moderation becomes a central aspect of all social media platforms and online communities, interest has grown in how to make moderation decisions contestable. On social media platforms where individual communities moderate their own activities, the responsibility to address user appeals falls on volunteers from within the community. While there is a growing body of work devoted to understanding and supporting the volunteer moderators' workload, little is known about their practice of handling user appeals. Through a collaborative and iterative design process with Reddit moderators, we found that moderators spend considerable effort in investigating user ban appeals and desired to directly engage with users and retain their agency over each decision. To fulfill their needs, we designed and built AppealMod, a system that induces friction in the appeals process by asking users to provide additional information before their appeals are reviewed by human moderators. In addition to giving moderators more information, we expected the friction in the appeal process would lead to a selection effect among users, with many insincere and toxic appeals being abandoned before getting any attention from human moderators. To evaluate our system, we conducted a randomized field experiment in a Reddit community of over 29 million users that lasted for four months. As a result of the selection effect, moderators viewed only 30% of initial appeals and less than 10% of the toxically worded appeals; yet they granted roughly the same number of appeals when compared with the control group. Overall, our system is effective at reducing moderator workload and minimizing their exposure to toxic content while honoring their preference for direct engagement and agency in appeals.

Year:

2024

Year:

2024

Year:

2024

Year:

2023

To reduce the spread of misinformation, social media platforms may take enforcement actions against offending content, such as adding informational warning labels, reducing distribution, or removing content entirely. However, both their actions and their inactions have been controversial and plagued by allegations of partisan bias. When it comes to specific content items, surprisingly little is known about what ordinary people want the platforms to do. We provide empirical evidence about a politically balanced panel of lay raters' preferences for three potential platform actions on 368 news articles. Our results confirm that on many articles there is a lack of consensus on which actions to take. We find a clear hierarchy of perceived severity of actions with a majority of raters wanting informational labels on the most articles and removal on the fewest. There was no partisan difference in terms of how many articles deserve platform actions but conservatives did prefer somewhat more action on content from liberal sources, and vice versa. We also find that judgments about two holistic properties, misleadingness and harm, could serve as an effective proxy to determine what actions would be approved by a majority of raters.

Year:

2023

Year:

2022

Year:

2022

Despite large public investments in facilitating the secondary use of data, there is little information about the specific factors that predict data's reuse. Using data download logs from the Inter‐university Consortium for Political and Social Research (ICPSR), this study examines how data properties, curation decisions, and repository funding models relate to data reuse. We find that datasets deposited by institutions, subject to many curatorial tasks, and whose access and preservation is funded externally, are used more often. Our findings confirm that investments in data collection, curation, and preservation are associated with more data reuse.

Year:

2022

Year:

2022

Year:

2021

Year:

2021

Year:

2021

Collaborators (9)

Margaret Hedstrom

Professor Emerita

University of Michigan

UNITED STATES
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Paul Resnick

University of Michigan

UNITED STATES
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Amy Pienta

Research Professor

University of Michigan

UNITED STATES
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Anthony J. Million

-

UNITED STATES
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Andrea Thomer

Assistant Professor

University of Arizona

UNITED STATES
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Ingrid Erickson

Associate Professor

Syracuse University

UNITED STATES
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David A. Bleckley

-

UNITED STATES
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Florian Schaub

University of Michigan

UNITED STATES
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Jane Im

University of Michigan

UNITED STATES
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