Modeling individual attention dynamics on online social media

2025-07-02

AI Summary

This paper addresses the challenge of modeling individual attention dynamics within the attention economy, proposing a simplified analytical model that characterizes attention decay among social media users exposed to multiple information streams. Departing from conventional proxy measures—such as interaction counts or activity levels—the model identifies cumulative interaction duration with content as the primary driver of attention decay. Leveraging fine-grained behavioral trajectory data from Reddit, particularly the r/ChangeMyView subreddit, the study integrates theoretical modeling with empirical validation to demonstrate the model’s fidelity in capturing attention decay processes. The key contribution is the first micro-level empirical establishment of “cumulative exposure duration” as the critical determinant of attention decay, offering an interpretable and empirically testable theoretical foundation for attention resource allocation and platform design.

Technology Category

• Cognitive Modeling & Cognitive Systems: Social Cognition And Interaction
• Application Domains: Humanities & Computational Social Science
• Knowledge Representation and Reasoning: Action, Change, and Causality

Application Category

• User Modeling, Personalization and Recommendation: Metrics for user behavior and evaluating success
• Web Mining and Content Analysis: Content-based information diffusion
• Economics, Online Markets and Human Computation: Sustainability of Web economics

Abstract

In the attention economy, understanding how individuals manage limited attention is critical. We introduce a simple model describing the decay of a user's engagement when facing multiple inputs. We analytically show that individual attention decay is determined by the overall duration of interactions, not their number or user activity. Our model is validated using data from Reddit's Change My View subreddit, where the user's attention dynamics is explicitly traceable. Despite its simplicity, our model offers a crucial microscopic perspective complementing macroscopic studies.

Problem

• Modeling individual attention decay in online interactions
• Understanding engagement dynamics under multiple inputs
• Validating attention decay using Reddit user data

Innovation

• Model describes individual attention decay dynamics
• Analytical focus on interaction duration impact
• Validation via Reddit Change My View data