How a Single Paper Affects the Impact Factor: Implications for Scholarly Publishing
Manolis Antonoyiannakis

TL;DR
This study analyzes how individual papers influence journal Impact Factors, revealing high volatility especially in small journals and highlighting incentives for journals to remain small to maximize IF gains.
Contribution
It provides empirical evidence on the volatility of Impact Factors caused by single papers and discusses implications for journal ranking practices and publishing incentives.
Findings
Small journals experience high Impact Factor volatility from single papers.
Highly-cited papers can boost small journal IFs by over 50%.
High-IF journals are incentivized to remain small to stay competitive.
Abstract
Because the Impact Factor (IF) is an average quantity and most journals are small, IFs are volatile. We study how a single paper affects the IF using data from 11639 journals in the 2017 Journal Citation Reports. We define as volatility the IF gain (or loss) caused by a single paper, and this is inversely proportional to journal size. We find high volatilities for hundreds of journals annually due to their top-cited paper: whether it is a highly-cited paper in a small journal, or a moderately (or even low) cited paper in a small and low-cited journal. For example, 1218 journals had their most cited paper boost their IF by more than 20%, while for 231 journals the boost exceeded 50%. We find that small journals are rewarded much more than large journals for publishing a highly-cited paper, and are also penalized more for publishing a low-cited paper, especially if they have a high IF.…
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Taxonomy
Topicsscientometrics and bibliometrics research · Corruption and Economic Development
