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jonasac.bsky.social
Jonas Lang
@jonasac.bsky.social
1.6K followers 1.3K following 1.7K posts
Former Ghent University & University of Exeter Professor, JAP & ORM AE turned whistleblower https://www.jonaslang.info/userdata/scienceeroded.pdf https://scholar.google.de/citations?hl=en&user=J34w1n0AAAAJ
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 1d
🕵️‍♂️The latest version of my paper Science Eroded: Ethical Oversight Failures, Merit Exception Policies, Respect Policies, and Whistleblower Retaliation in Management/Applied Psychology Academia is now available here:
📄 www.jonaslang.info/userdata/sci...
📄(backup): www.academia.edu/127740237/Sc...
www.jonaslang.info
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 2h
8/
🏆 Zijlstra presents himself as an expert in “inclusive redesign.”
Apparently, that includes redesigning PhD theses so credit follows politics, not science — and redesigning supervision so ethics conveniently vanish.
A lasting impact, just not the kind EAWOP should celebrate. ⚖️
jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 2h
7/
Two cases, same pattern:
👉 Late-stage takeover
👉 Pressured student
👉 Institutional approval
This isn’t mentorship — it’s systematic credit capture.
🧾 Full story: www.jonaslang.info/userdata/sci...
www.jonaslang.info
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 2h
6/
The evidence is clear:
✔️ I co-authored the papers and supervised the dissertation.
✔️ The thesis content overlaps directly with my prior research.
Yet credit was reassigned — again — to Zijlstra and Hülsheger. ⚖️
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 2h
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Six years(!) later (2020), the dissertation appeared with Zijlstra (main) and Hülsheger (second). Both claimed credit for work I had already supervised to completion.
Hülsheger never contributed; the overlap with my research was obvious.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 2h
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After I raised concerns about the Schwager case, they changed tactics.
The student was blocked from submitting papers so dissertation credit could still be grabbed — while my coauthorships were left out of the thesis.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 2h
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HR suddenly demanded that the student submit a first thesis version before contract renewal — documented in an email from 2014.
By then I had provided all feedback and the dissertation was complete. I never heard from it again.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 2h
2/
I supervised this project to completion in 2014. There’s a long email trail showing me guiding every analysis step by step.
Fred Zijlstra commented on papers; Ute Hülsheger had no role at all.
The work built directly on my own dissertation about unforeseen change.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 2h
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🐍🎓 Zijlstra–Hülsheger Case II – The Second PhD Grab
After the ETS-funded Schwager dissertation, another PhD at Maastricht University followed the same pattern.

This time: Alicia Walkowiak’s PhD (2020)—Dynamic performance: the role of task and individual characteristics.
@maastrichtu.bsky.social
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 3h
🎥🔦 Forceful & painful removal 🫳💥(9/25)
Directly after reporting misconduct in psychology (DEROUS+HÜLSHEGER+ZIJLSTRA+FONTAINE+LANG/IPPOLITO ). 🚫Against DGPs’ own ethics rules, no due process.
@dgps.bsky.social @dgps-gesundheit.bsky.social gesundpsy2025.bsky.social
www.youtube.com/shorts/MissA...
Forceful & painful removal 🫳💥 from lecture hall. Reality of reporting misconduct in psychology
YouTube video by An Academic Journey
www.youtube.com
jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
10/
Similar trespassing charges in Duisburg (Germany) - also at a psychology conference have been dismissed and I am now claiming wrongful arrest!
jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
9/
Published by? The AMERICAN PSYCHOLOGICAL ASSOCIATION — who provided false facts to Denver police so that I got charged for trespassing and now tries to mentally evaluate me.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
8/
After her fishing expedition, Derous again concludes: DISCRIMINATION. DIVERSITY TRAINING REQUIRED.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
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Any design with enough cells will yield some “significant” results. That’s not discrimination — it’s FALSE POSITIVES. Three-way interactions are inherently error-prone particularly when the researcher shows extreme interpretation flexibility.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
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Good news? Not for Derous. She goes fishing in each ANOVA cell comparison, searching for differences, then claims: DISCRIMINATION. This is UNETHICAL and also misleading in the absence of overall effects.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
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This paper shows ABSOLUTELY NO DISCRIMINATION.
– Ethnicity: NATIVE/BELGIAN = 4.23, MAGHREB/ARAB = 4.26
– Gender: MALE = 4.22, FEMALE = 4.14
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
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New evidence: In 2019 she published another “discrimination” paper — APA journal — that may be the WORST CASE of misleading readers & researcher irresponsibility (DOI: doi.org/10.1037/arc0...).
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
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Some of her papers now contain FALSE REPORTING (RMSEA, DFS) + MISLEADING CLAIMS & ITEM FIDDLING. Retraction request & report: www.jonaslang.info/userdata/der...
www.jonaslang.info
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
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Eva Derous has a long history of claiming bias where none exists. In 2019, she gave a questionable lecture later published with a model about “bias everywhere.” Only in a side sentence it admitted effects are sometimes “mixed.”
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
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🚨 DEROUS & Pepermans, 2019 paper, misleading the public: When your gender & ethnicity discrimination paper shows ABSOLUTELY NO DISCRIMINATION. WHAT? Yes, you read this correctly.

@apajournals.bsky.social
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 4h
🔦The Derous Case
I reported research misconduct by Prof. Eva Derous—to Universities, the Belgian Psychology Commission & publishers.
Undisputed facts, yet nothing happened.
Now she misuses Belgian justice to call ethical reporting “cyberstalking.”
The demand? Stay silent⚖️
youtube.com/shorts/jaq2I...
jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 14h
10/10
Bottom line: It is APA’s duty to retract Hülsheger 2016, 2022a, 2022b (with Zijlstra) and to correct Hülsheger & Schewe 2011. Retaliation, does not change that ethical duty.
jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 14h
9/10
To their credit, @apajournals.bsky.social has so for not become violent – unlike EAWOP, @dgps.bsky.social , and also the Academy of Management ( @aomconnect.bsky.social ) who all assaulted me at their congresses. – With severe consequences for my health. Legal situation unclear.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 14h
8/10
They were not alone: The German Psychology Society ( @mepsy.bsky.social ) caused similar trespass charges. However, the German trespass charges were dismissed and I am even eligible for wrongful detainment compensation. The US trespass/mental evaluation/area ban ordeal is still ongoing!
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 14h
7/10
@apajournals.bsky.social dismissed me as an AE, later APA had me arrested & charged for “trespassing” at a conference I was fully registered for. I was area-banned and forced into a mental evaluation after their false complaints.
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jonasac.bsky.social
Jonas Lang @jonasac.bsky.social · 14h
6/10
Example: Hülsheger even made WRITTEN threats of authorship removal/approval for a paper later published by @apajournals.bsky.social (Hülsheger et al., 2022) with authorship removal!, e.g., “tell me whether you want to be author” but “will not change anything”. APA didn’t act—they retaliated.
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