"Together but not together": Evaluating Typing Indicators for Interaction-Rich Communication

Title of the Paper

“Together but not together”: Evaluating Typing Indicators for Interaction-Rich Communication

Paper Information

• Subject Area: Human-Computer Interaction (HCI), specifically the design of interaction-rich communication in text-based computer-mediated communication.
• Keywords: Computer-mediated communication, online interaction, typing indicators, Media Richness Theory (MRT), social presence, text communication

Research Background and Problem Statement

• Identified Issues and Challenges:

  • Messaging has become a ubiquitous digital communication tool, but its singular mode limits the conveyance of immediate feedback, tone, facial expressions, hesitations, and pauses, reducing the richness of media communication.
  • Existing research presents conflicting conclusions when evaluating the impact of Media Richness Theory on user experience and task performance, lacking a clear design theory to improve text-based communication.
  • Although users express a need for higher social presence, there is relatively little design research on enhancing the richness of text communication media.

• Significance of the Research:

  • In the context of the COVID-19 pandemic and remote work, text-based communication has seen a significant increase, becoming a critical tool for team management and maintaining personal relationships.
  • Enhancing the richness of text communication can not only improve task collaboration but also have a positive impact on critical areas such as mental health support.

• Research Motivation and Related Work:

  • Existing studies have found that real-time interaction (e.g., limiting asynchronous communication) can increase users' sense of social presence but may also lead to excessive stress and communication obligations.
  • This research aims to design mechanisms that do not restrict asynchronicity but instead promote richer communication content in text interactions.

Solution

• Proposed Solution:

  • Designed and implemented two new typing indicators: masked-typing and live-typing, to facilitate richer text interactions based on multiple cues and immediate feedback.
  • Employed a mixed-methods approach (quantitative + qualitative) to evaluate the effectiveness of these indicators, while building an experimental environment to test them.

• Innovative Contributions:

  • By introducing key features of Media Richness Theory (MRT) (immediate feedback, multiple cue transmission, language variety, message personalization), the study reimagines traditional text communication interfaces.
  • Conducted simulation experiments to test how these indicators impact users' cognitive demands, social presence, and interaction efficiency in task-oriented environments.

• Implementation Steps and Key Techniques:

  • Indicator Design:
    • Masked-Typing: Characters typed by the sender are displayed in real-time as “#” symbols to preserve the privacy of the message content.
    • Live-Typing: The receiver sees the sender’s input in real-time, including deletions and edits.
  • User Experiments:
    • 24 participants completed a simulated survival task using four different typing indicators (no indicator, traditional typing indicator, masked-typing, live-typing). Data collected included chat logs, NASA-TLX cognitive task load scores, and qualitative user feedback.

Research Findings

• Specific Findings:

  • Cognitive Demand: Live-typing significantly outperformed no indicator and traditional typing indicators across all cognitive task load metrics (e.g., stress, frustration, time demand).
  • Social Presence: Live-typing significantly enhanced users’ perception of their partner’s presence during task collaboration, followed by masked-typing.
  • Task Outcomes: Collaboration accuracy with live-typing and masked-typing was higher than with other indicators, particularly in terms of consistency and task-solving efficiency.

• Advantages Over Existing Solutions:

  • Compared to traditional typing indicators that only display “typing…,” the new designs provide richer cues and immediate feedback, offering users a stronger sense of connection.
  • The designs enhance social presence while reducing cognitive task load, making them suitable for task-oriented and mental health support applications.

• Experiment and Evaluation Results:

  • Live-typing was considered more conducive to team collaboration due to its immediacy and transparency in communication processes, though some users expressed concerns about its privacy implications.
  • Masked-typing alleviated the pressure of real-time exposure to some extent, but its ambiguous character display method could lead to user confusion.

• Limitations and Future Directions:

  • Limitations:
    • The sample consisted of only 24 participants, with a gender bias (predominantly male).
    • Remote experiments may have been influenced by external distractions, affecting the reliability of results.
  • Future Directions:
    • Test the effectiveness of these indicators in different types of relationships (e.g., friends, colleagues, therapeutic relationships).
    • Explore the potential role of personalized expression and customizable settings.
    • Investigate applications in task-based mental health support (e.g., cognitive behavioral therapy).