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Research collaboration and productivity: is there correlation?
Giovanni Abramo, Ciriaco Andrea D'Angelo, Flavia Di Costa
TL;DR
Research policies increasingly support extramural collaboration, but evidence on its relationship with institutional research performance remains incomplete. This study uses bibliometric co-authorship measures to examine Italian universities across overall, international, and company collaboration, finding no clear overall correlation but substantial variation by field and collaboration type. The authors conclude that networking remains supportable for knowledge dissemination, while identifying hypotheses about private-sector collaboration for future empirical testing.
Problem
The paper addresses the lack of systematic evidence on whether extramural collaboration intensity correlates with university scientific performance across collaboration forms and fields.
Method
The study analyzes the Italian academic system using bibliometric measures that treat scientific co-authorship as collaboration and compare collaboration intensity with research-performance indicators.
Results
There is no clear overall correlation between extramural collaboration and institutional performance, although correlations vary by collaboration type, scientific field, and performance dimension.
Takeaways & Limitations
Networking and collaboration remain supportable because they can disseminate knowledge and research results more rapidly and pervasively.
Takeaways & Limitations
The authors leave hypotheses about why companies collaborate with prominent researchers and select strong scientific partners for future empirical testing.
Abstract
from arXiv · showhide
The incidence of extramural collaboration in academic research activities is increasing as a result of various factors. These factors include policy measures aimed at fostering partnership and networking among the various components of the research system, policies which are in turn justified by the idea that knowledge sharing could increase the effectiveness of the system. Over the last two decades, the scientific community has also stepped up activities to assess the actual impact of collaboration intensity on the performance of research systems. This study draws on a number of empirical analyses, with the intention of measuring the effects of extramural collaboration on research performance and, indirectly, verifying the legitimacy of policies that support this type of collaboration. The analysis focuses on the Italian academic research system. The aim of the work is to assess the level of correlation, at institutional level, between scientific productivity and collaboration intensity as a whole, both internationally and with private organizations. This will be carried out using a bibliometric type of approach, which equates collaboration with the co-authorship of scientific publications.
1. Introduction
Scientific collaboration has expanded, supported by specialization, complex problems, policy expectations about knowledge sharing, and reduced communication barriers. This study examines whether collaboration intensity is related to university research performance across the Italian academic system.
- Motivation: Collaboration has increased because scientific specialization, complex problems, equipment costs, funding access, prestige, productivity opportunities, and improved communication have lowered barriers.Information and communication technologies and declining transportation costs have eased the proximity effect.
- Policy context: Research policies promote collaboration because knowledge sharing is believed to increase research effectiveness and support innovation.European Union policies have supported networks and collaboration between laboratories.
- Research context: The scientific community has increasingly assessed whether collaboration intensity affects research-system performance, building on studies linking collaboration with productivity.The paper positions its analysis within this broader evaluation of collaboration policies.
- Research questions: The analysis tests correlations between overall, international, and university–company collaboration intensity and university scientific performance.The Italian academic system is studied using bibliometric co-authorship as the operational measure of collaboration.
- Research questions: The study asks whether university research quality predicts extramural collaboration intensity and whether the two may form a virtuous cycle.The proposed cycle links external collaboration with better performance and scientific reputation with greater external collaboration demand.
- Study scope: Its distinctive scope is comprehensive: it covers all Italian universities and multiple collaboration forms rather than a selected sample.The forms include university–university, university–public research institution, university–company, and university–foreign organization collaboration.
2. Research productivity and collaboration intensity: literature review
The literature generally associates scientific collaboration with higher productivity, but existing evidence is fragmented across disciplines, locations, and collaboration types. The paper identifies a gap in systematic, exhaustive institutional analysis.
- Productivity determinants: Research productivity is multidimensional and reflects personal, institutional, departmental, and environmental attributes.Prior studies therefore approach productivity determinants from multiple perspectives.
- Collaboration and productivity: Scientific collaboration is widely recognized as influencing individual and institutional performance in effectiveness and efficiency.This evidence has helped make collaboration a cornerstone of national and supranational research policy.
- Collaboration and productivity: The number of collaborating researchers, larger teams, and division of labor are associated with higher scientific productivity in several studies.Evidence comes from American university researchers and team-size analyses covering 1981–1999.
- Collaboration and productivity: Collaboration generally contributes to productivity, but its intensity varies with geographical proximity and scientific field.International collaboration has also been associated with more positive output quality than research without collaboration.
- Research groups: Established research groups show higher productivity and greater international-collaboration propensity than non-established or unaffiliated researchers.Research groups also facilitate contacts, funded-project participation, and publication opportunities.
- Research gap: Existing studies are usually limited to particular disciplines or individual units, leaving no systematic and exhaustive assessment of collaboration forms and scientific performance.The review identifies this limited scope as the study’s central literature gap.
3. Methodology and dataset
The study analyzes the entire Italian academic system in selected scientific-technological fields using publication-based productivity indicators and co-authorship-based collaboration measures. University-level values are normalized by disciplinary sector and aggregated by area.
- Dataset: The dataset covers 78 Italian universities, 8 scientific-technological disciplinary areas, 181 sectors, over 36,000 researchers, and 2001–2003.Socio-economic and humanities disciplines are excluded; the included researchers represent 58% of permanent university research staff.
- Operationalization: International-journal publications proxy academic research production, while extramural co-authorship proxies collaboration among research organizations.The total academic-system output during the survey period was 53,420 publications.
- Indicators: The analysis measures quantitative, qualitative, and fractional publication intensity together with average quality and total, foreign, and domestic-company collaboration intensity.Output, Fractional Output, Scientific Strength, Quality Index, CI, FCI, and DCI are used as indicators.
- Normalization: Productivity indicators are ratios of publication measures to university staff, while the Quality Index is Scientific Strength divided by Output.Journal impact factors are normalized by disciplinary sector to support comparisons across sectors.
- Collaboration measures: Global collaboration intensity is the ratio of Output to Fractional Output.Foreign and domestic-company collaboration intensities are incidences of publications with at least one corresponding external co-author.
- Aggregation: Sector-level values are normalized to sector means, re-aggregated by disciplinary area, and calculated using staff counts for each university-sector combination.Universities averaging fewer than five staff members in surveyed areas are excluded to limit outlier distortion.
4. Findings of the study
Extramural collaboration varies substantially across scientific fields and collaboration types, and its association with research performance is likewise area-specific. Average publication quality most often correlates positively with collaboration intensity, but no uniform institutional relationship emerges.
- Collaboration and publication quality: Extramural collaboration is associated with publication in higher-impact journals, particularly for internationally co-authored research.The authors note that this may reflect editorial signaling or genuinely higher scientific impact from enlarged teams.
- Sectorial collaboration intensity: 95% of physical-sciences publications involve extramural collaboration, compared with 60% in industrial and information engineering.Collaboration types also vary substantially across disciplinary areas.
- International collaboration: 65% of publications in astronomy and astrophysics and forest management and silviculture involve foreign co-authors.Forest management and silviculture contributed only 55 publications, while foreign co-authorship involved more than 38% of general and inorganic chemistry publications.
- Public-private collaboration: Domestic-enterprise co-authorship is highest in electronics at 12.6% and industrial chemistry at 10.9%, but reaches at most 3% in physical and mathematical sciences.Across areas, fewer than two in 1,000 mathematics and computer-sciences publications and fewer than one in 1,000 physical-sciences publications involve domestic enterprises.
- Collaboration and scientific performance: Industrial and information engineering is the only area with strong correlations between overall collaboration intensity and all dimensions of scientific performance.Biological sciences and agricultural and veterinary sciences show similar, though less comprehensive, positive associations with productivity and average quality.
- Collaboration and scientific performance: Average quality most often correlates positively with collaboration intensity, while chemical sciences shows negative correlations for fractional productivity.International collaboration is associated with average quality in nearly all areas, whereas domestic collaboration has no performance association in three of eight areas and only weak quality associations in two others.
- Interpretation of sectoral differences: Basic research favors foreign collaboration, whereas domestic collaboration is uncommon and concentrated in application-oriented sectors.The authors attribute the latter pattern to private enterprises’ reluctance to share proprietary knowledge.