Research Method Usage across Academic Ages in Library and Information Science: An Empirical Study (1990-2023)

Abstract

Academic age critically shapes career development, influencing research behavior, output volume, and methodological choices. Analyzing method variation across academic ages offers a new theoretical lens on scholarly evolution and provides early-career researchers with practical guidance for method selection. A corpus of 26,677 articles published 1990-2023 in 14 authoritative Library and Information Science journals was compiled. The CogFT model automatically classified the research methods embedded in these articles, and Top2Vec generated the topic model. This process resulted in a comprehensive dataset linking research methods with topics. Author-name disambiguation enabled calculation of each scholar's academic age. Popularity and Shannon diversity indices for methods, together with topic diversity, were compared across academic age groups. Results reveal dynamic methodological trends: the share of theoretical approaches declined gradually, whereas experimental and bibliometric methods gained ground. Method popularity differs significantly among cohorts. Mid-career scholars exhibit the highest method diversity; late-career scholars the lowest.

References in corpus (9)

• The effects of aging of scientists on their publication and citation patterns
• The relationship between scientists' research performance and the degree of internationalization of their research
• Quantifying patterns of research interest evolution
• Increasing trend of scientists to switch between topics
• How are academic age, productivity and collaboration related to citing behavior of researchers?
• Usage frequency and application variety of research methods in library and information science: Continuous investigation from 1991 to 2021
• A Review on Method Entities in the Academic Literature: Extraction, Evaluation, and Application
• Non-synchronism in Global Usage of Research Methods in Library and Information Science from 1990 to 2019
• Gender Differences in Research Topic and Method Convergence among Collaborating Scholars in Library and Information Science