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Ekkehard Kohler

@ekkehardkohler

Full Professor for Economics Didactics and Economic Education University of Siegen // Political Economy // Social and Political Science // Alumni @uwmadscience.bsky.social // ORCID: 0000-0003-1466-9891

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02.10.2023
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Latest posts by Ekkehard Kohler @ekkehardkohler

Increase your sample. Get more kids.

22.09.2025 15:52 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Please share and we are looking forward to you comments. Thanks a lot!

20.08.2025 10:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The Treatment effects vary with the size of the firm and with regard to regional location. Note that we do not find the East-West Difference - but rahter a city vs hinterland scheme.

20.08.2025 10:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Another explanation is tied to cultural proximity. We found in a survey with the treated firms that preceived tenacity of arabs is significanty lower compared to the other groups.

20.08.2025 10:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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The effects are most prevalent in skilled trades. However, we also report that drop out rate is very high in this sector. So one explanation is for sure liked to statsitical discrimination. Note the high response rate of the municipalities that seek apprentices every year.

20.08.2025 10:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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The bad: Grades and other skills and competences are not even close to overcome the negative effect of a non-German sounding name. Have a look:

20.08.2025 10:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Sending away 50k requests to firms that had previously posted an job vacancy at the Federal Employment Agency over three years using German vs. non-German sounding names, we are able to illustrate a responsivevess ranking in the paper that is avaialbe at SSRN: papers.ssrn.com/sol3/papers....

20.08.2025 10:07 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Orgin beats Performance. In Germany, 10th graders who apply for an apprenticeship have a 15pp lower chance to receive an answer. @dgsoziologie.bsky.social @mpsa.bsky.social @davidajaeger.bsky.social @cesifo.org @danbischof.bsky.social @p-hunermund.com papers.ssrn.com/sol3/papers....

20.08.2025 10:07 πŸ‘ 17 πŸ” 9 πŸ’¬ 3 πŸ“Œ 1
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πŸ“„ The full study (open access): πŸ‘‰https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0324542

28.07.2025 21:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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we inform a decision model that makes this pattern theoretically understandable and, for the first time, clearly distinguishes between opportunism and persuasion effort in political interactions with voters. (4/5)

28.07.2025 21:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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3. Persuasion effort: Candidates who disagree with voters write significantly longer answers.
Why are these findings relevant? Because we...(3/5)

28.07.2025 21:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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πŸ” Three key findings: 1. Partisanship: Candidates are more likely to respond when the voter's opinion aligns with their own party line. 2. Opportunism: The expressed stance often adapts to the voter's opinion – sometimes contrary to the expected party line. (2/5)

28.07.2025 21:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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First-time voters hold polarized views on migrant issues. How do politicians react to this phenomenon? To find out, we contacted 1,554 candidates before the 2021 German federal election as (non-)migrant first-time voters and vary their stance on dual citizenship. Openaccess!(1/5)

28.07.2025 21:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

β€œOne of the easiest pastimes in the world is debunking democracy…a schoolboy can attack democracy much better than he can defend it. And one cannot answer him unless one knows the anti-democratic β€˜case’ and is willing to admit the large measure of truth it contains.”

George Orwell, 1941

12.07.2025 07:09 πŸ‘ 34 πŸ” 8 πŸ’¬ 2 πŸ“Œ 1
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Seeing too many diff-in-diff reviews and and summary articles but not sure where to start? We propose a new way to synthesize this growing literature using a Review in Reviews approach.

13.07.2025 13:17 πŸ‘ 136 πŸ” 10 πŸ’¬ 2 πŸ“Œ 2
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The state of research on AI and education from controlled studies: Growing evidence that, when used as a tutor with instructor guidance, AI seems to have quite significant positive effects. When used alone to get help with homework, it can act as shortcut that hurts learning.

Still early days.

21.05.2025 05:11 πŸ‘ 78 πŸ” 23 πŸ’¬ 4 πŸ“Œ 2
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MartΓ­n E. De Simone on X: "🚨 New working paper! Can ChatGPT or generative AI transform education in low-resource settings? We ran a randomized controlled trial in Nigeria to find out. The results? Powerful learning gains at a low cost. πŸ‘‡ https://t.co/BrA1jfuaOi" / X 🚨 New working paper! Can ChatGPT or generative AI transform education in low-resource settings? We ran a randomized controlled trial in Nigeria to find out. The results? Powerful learning gains at a low cost. πŸ‘‡ https://t.co/BrA1jfuaOi

Thread by one of the authors: x.com/desimonemart...

20.05.2025 20:27 πŸ‘ 6 πŸ” 2 πŸ’¬ 1 πŸ“Œ 1
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Long-Term Effects of the US Medical Research Effort During World War II www.nber.org/digest/20250...

02.05.2025 07:09 πŸ‘ 12 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0

Madison, Wisconsin!!!

23.04.2025 16:57 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Very insightful tips from @catherinedevries.bsky.social how to find resilience in your skil power.

16.04.2025 19:37 πŸ‘ 0 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

Maybe it’s simply taste-based.

14.04.2025 07:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
ALLBUS Award 2025 – Information & Application | GESIS Find out all about the ALLBUS Award 2025: application process, criteria & recognition for outstanding research using ALLBUS data. Learn more at GESIS!

πŸ“£ Call for Submissions: ALLBUS Award 2025 πŸ†

Have you published a social science article using ALLBUS data in a journal or edited volume between 2022 and 2024? Please consider submitting it by 15 April 2025 ⭐

πŸ‘‰ More information: www.gesis.org/en/allbus/ab...

@gesis.org

10.04.2025 06:52 πŸ‘ 14 πŸ” 8 πŸ’¬ 0 πŸ“Œ 0

#EconSky

30.03.2025 08:18 πŸ‘ 22 πŸ” 11 πŸ’¬ 1 πŸ“Œ 0

And that’s why we need structural reforms, cutting back national holidays as a starter and labor market reforms and deregulation of gov admin ALONGSIDE debt financed stimuli to prevent inflationary pressures during the next four years.

14.03.2025 11:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm getting the feeling that my current research on difference-in-differences with non-binary treatments has no shot at NSF funding.

08.03.2025 14:05 πŸ‘ 487 πŸ” 50 πŸ’¬ 15 πŸ“Œ 3
Greg Mankiw's Blog: Kevin Hassett forgets Econ 101

Greg Mankiw, who has been teaching econ 101 for decades, scolds Hassett for causally interpreting an accounting identity and pretending it’s econ 101 gregmankiw.blogspot.com/2025/03/kevi...

10.03.2025 01:33 πŸ‘ 316 πŸ” 68 πŸ’¬ 15 πŸ“Œ 13

Die traditionelle OrdnungsΓΆkonomik hatte eine Leerstelle: Demokratische Legitimation. IdeologiegetrΓ€nkte Papiere entstanden. KirchgΓ€ssner kritisierte dies vehement (1988). Mehr dazu: www.econstor.eu/bitstream/10...

11.03.2025 19:36 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

www.econstor.eu/bitstream/10...

11.03.2025 19:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Heute ist Rudi on Fire. @bachmannrudi.bsky.social

11.03.2025 14:41 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I believe the point of the author is the lacking foundation of theory in some papers. We lived through this before during the 1920's when German Economics finally understood that science without theory is simply a glass bead game.

11.12.2023 10:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0