TY  - CONF
TI  - 33 Years of Lean Construction Research: Community Evolution and Authorship Patterns
C1  - Singapore, Singapore
C3  - Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34)
SP  - 968
EP  - 979
PY  - 2026
DO  - 10.24928/2026/0132
AU  - John, Paul Christian
AU  - Sun, Bernard
AU  - Engebø, Atle
AU  - Lædre, Ola
AU  - Haghsheno, Shervin
AU  - Drevland, Frode
AD  - PhD Student, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany, christian.john@kit.edu,  orcid.org/0009-0005-0648-9331
AD  - Student, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany, bernard.sun@student.kit.edu,  www.orcid.org/0009-0003-8624-7927
AD  - Researcher, Norwegian University of Science and Technology (NTNU), Trondheim, Norway,  atle.engebo@ntnu.no, orcid.org/0000-0002-5293-0176   
AD  - Professor, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, ola.laedre@ntnu.no,  orcid.org/0000-0003-4604-8299
AD  - Professor, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany, shervin.haghsheno@kit.edu,  orcid.org/0000-0002-0602-6370 
AD  - Associate Professor, Norwegian University of Science and Technology (NTNU), Trondheim, Norway,  frode.drevland@ntnu.no, orcid.org/0000-0002-4596-1564  
ED  - Hamzeh, Farook
ED  - Poshdar, Mani
ED  - Garcia-Lopez,, Nelly P.
AB  - This paper presents a quantitative analysis of Lean Construction (LC) research contributions at the International Group for Lean Construction (IGLC) conferences over a 33-year period (1993–2025). Based on a dataset of 2,413 conference papers and 2,846 authors, the study examines authorship patterns, collaboration structures, and the involvement of students in order to describe how participation in the IGLC community has evolved. The results show that IGLC has developed into a well-established and still expanding research community, with sustained publication activity averaging over 100 papers per year. A relatively small but persistent core of authors (15%) accounts for over 86% of all papers, indicating a strong concentration of research output. At the same time, the number of contributing authors has continued to increase, while the size of the recurring core has remained comparatively stable. Collaboration has intensified steadily, reflected in a rise in the average number of authors per paper to more than 3.5. Also, student involvement is substantial: PhD students contribute to one-third to one-half of annual publications, with Bachelor/Master students also increasingly represented. Overall, the study provides a descriptive baseline of authorship and participation patterns at IGLC, supporting further reflection on the structure and evolution of LC research.
KW  - Research
KW  - publications
KW  - core authors
KW  - students
KW  - community.
PB  - 
T2  - Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34)
DA  - 2026/06/22
CY  - Singapore, Singapore
L1  - http://iglc.net/Papers/Details/2457/pdf
L2  - http://iglc.net/Papers/Details/2457
N1  - Export Date: 19 June 2026
DB  - IGLC.net
DP  - IGLC
LA  - English
ER  -