| Indicator | University Z-score | Average country Z-score |
|---|---|---|
|
Multi-affiliation
|
2.090 | 1.319 |
|
Retracted Output
|
-0.071 | -0.227 |
|
Institutional Self-Citation
|
0.057 | -0.241 |
|
Discontinued Journals Output
|
-0.430 | -0.470 |
|
Hyperauthored Output
|
1.473 | 0.823 |
|
Leadership Impact Gap
|
-0.007 | 0.393 |
|
Hyperprolific Authors
|
0.062 | 0.074 |
|
Institutional Journal Output
|
-0.218 | -0.186 |
|
Redundant Output
|
0.031 | -0.240 |
Vrije Universiteit Brussel (VUB) demonstrates a solid overall integrity profile, marked by significant strengths in operational diligence but also specific vulnerabilities that warrant strategic attention. The institution excels in ensuring its research is published in reputable, active journals and avoids the risks of academic endogamy by not over-relying on institutional publications. A key strength is its low dependency on external collaborations for impact, indicating robust internal research leadership. These positive aspects support a strong research portfolio, with VUB achieving top-tier national rankings (Top 3 in Belgium according to SCImago Institutions Rankings data) in critical fields such as Computer Science, Engineering, Energy, and Biochemistry, Genetics and Molecular Biology. However, this profile of excellence is contrasted by notable risks in authorship and citation practices, particularly a significant rate of hyper-authored output and medium-level risks in self-citation, multiple affiliations, and redundant publications. These vulnerabilities could subtly undermine the university's mission to be a "free inquiring and critical thinking university," as they may reflect a focus on metric optimization over the genuine "quest for knowledge." To fully align its practices with its esteemed mission, VUB is encouraged to review its authorship and citation guidelines, thereby reinforcing the scientific integrity that underpins its societal contributions.
The institution presents a Z-score of 2.090, which is notably higher than the national average of 1.319. Although both the university and the country fall within a medium-risk context, VUB shows a greater propensity for this practice. This suggests a higher exposure to the dynamics that drive multiple affiliations. While often a legitimate outcome of researcher mobility or partnerships, a rate elevated above the national standard can signal strategic attempts to inflate institutional credit through "affiliation shopping." This heightened signal warrants a review to ensure that all affiliations are substantive and reflect genuine collaboration rather than being primarily a tool for institutional positioning.
With a Z-score of -0.071, the institution's rate of retracted output is low and very close to the national average of -0.227. However, the university's rate is slightly higher, pointing to a minor, incipient vulnerability that should be monitored before it escalates. Retractions are complex events, and their occurrence is not always negative. Yet, even a slight uptick compared to peers can be an early indicator of stress on pre-publication quality control mechanisms. This finding suggests that reinforcing supervisory and methodological review processes would be a prudent step to maintain the institution's high standards of scientific integrity.
The institution's Z-score of 0.057 indicates a medium level of risk, which represents a moderate deviation from the low-risk national benchmark of -0.241. This divergence suggests that VUB is more sensitive to practices leading to institutional self-citation than its national peers. A certain degree of self-citation is natural, reflecting deep expertise in specific research lines. However, this elevated rate warns of a potential for scientific isolation or the formation of an "echo chamber," where the institution's work is validated internally without sufficient external scrutiny. This dynamic could lead to an endogamous inflation of impact, where academic influence is shaped more by internal citation patterns than by recognition from the global scientific community.
The institution demonstrates exceptional performance in this area, with a Z-score of -0.430 that is fully aligned with the national average of -0.470. This synchrony reflects an environment of maximum scientific security regarding the selection of publication venues. This very low-risk profile indicates that the institution has robust due diligence processes in place, effectively guiding its researchers away from channels that fail to meet international ethical or quality standards. By avoiding predatory or low-quality journals, VUB successfully mitigates significant reputational risks and ensures its research resources are invested in credible and impactful dissemination.
With a Z-score of 1.473, the institution shows a significant risk level in hyper-authorship, a figure that accentuates the medium-level vulnerability already present in the national system (Z-score of 0.823). This finding is a critical alert. While extensive author lists are legitimate in "Big Science" fields, a high rate outside these contexts can indicate systemic author list inflation, which dilutes individual accountability and transparency. This signal strongly suggests a need to differentiate between necessary massive collaboration and the potential for "honorary" or political authorship practices, which can compromise the integrity of the scientific record.
The institution shows a Z-score of -0.007, indicating a very low risk and demonstrating notable institutional resilience compared to the national average's medium-risk score of 0.393. This result is a significant strength, as it suggests that the university's scientific prestige is not overly dependent on external partners but is instead built upon strong internal capacity. The small gap indicates that the impact of research led by VUB's own authors is commensurate with its overall collaborative impact. This reflects a sustainable model of scientific excellence, where prestige is structural and endogenous rather than reliant on collaborations where the institution does not exercise intellectual leadership.
The institution's Z-score of 0.062 is nearly identical to the national average of 0.074, placing both at a medium risk level. This alignment suggests that the rate of hyperprolific authorship at VUB reflects a systemic pattern, likely driven by shared academic practices or evaluation pressures at the national level. While high productivity can signify leadership, extreme publication volumes challenge the perceived limits of meaningful intellectual contribution. This indicator serves as a warning of a potential imbalance between quantity and quality, pointing to risks such as coercive authorship or the assignment of credit without substantive participation—dynamics that prioritize metric performance over the integrity of the scientific record.
With a Z-score of -0.218, the institution is in close alignment with the national benchmark of -0.186, both reflecting a very low-risk environment. This integrity synchrony demonstrates a strong commitment to external validation and global scientific dialogue. By avoiding excessive dependence on its own journals, the institution effectively mitigates the conflicts of interest and risks of academic endogamy that can arise when an entity acts as both judge and party in the publication process. This practice ensures that its scientific output consistently undergoes independent external peer review, thereby enhancing its credibility and global visibility.
The institution's Z-score of 0.031 indicates a medium level of risk, which is a moderate deviation from the low-risk national context (Z-score of -0.240). This suggests the university has a greater sensitivity to practices that lead to redundant publications. A high degree of bibliographic overlap between an author's concurrent publications can be an indicator of 'salami slicing'—the practice of fragmenting a single, coherent study into multiple 'minimal publishable units' to artificially inflate productivity metrics. This behavior not only overburdens the peer-review system but also distorts the scientific evidence base, prioritizing publication volume over the generation of significant new knowledge.
