P David Boll

Related to 3.: Further improvements in e-learning technology, increasing scalability for the "best" educators and displacing the others?

It says "one of the closest", to be precise.

I don't claim that GDP is a perfect measure of human welfare, but this is incorrect. Curing diabetes would free up resources, both of diabetes patients and the health care system, which would be put to other uses (see broken window fallacy). Otherwise we could increase GDP by giving people diabetes?

Would be interesting to know how much of this was the initial "shock" of the spread of protestantism vs the feedback generated from educated mothers educating their daughters and so on.

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I don't think "professionals" is the correct translation of "Beamte" in this case. "Beamte" means civil servants, which in Germany comprises many employees of public institutions (teachers, professors, police officers, administrative officials, ...).

so much fun working @essobecker.bsky.social and David Boll

🚨 New Working Paper 🚨

w/ @pdavidboll.bsky.social and @jvoth.bsky.social

Do you run regressions on spatial data? Then keep reading!

We present a guide and Stata package for methods by Müller and Watson (2024 ECTA) to deal with Spatial Unit Roots in Regressions.

Link in 🧵 (1/n)

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Questions and comments welcome !

(n/n)

GitHub - pdavidboll/SPUR: Stata package around Spatial Unit Roots. Please cite Becker, Boll and Voth (2025) when using it. Stata package around Spatial Unit Roots. Please cite Becker, Boll and Voth (2025) when using it. - pdavidboll/SPUR

We present a practical guide to these methods for empirical researchers, along with an easy-to-use Stata package that implements them:
github.com/pdavidboll/S...
(4/n)

Müller and Watson (2024) show that strong spatial dependence ("spatial unit roots") can lead to spurious regression results even with HAC corrections, in a parallel to well-known results from time series. They develop diagnostic tests and a method to remove unit roots. (3/n)

Link to Working Paper:

warwick.ac.uk/fac/soc/econ...

It is well-known that spatial dependence is a problem for inference in regressions that use spatial data. However, standard HAC correction methods are only enough when dependence is not too strong. (2/n)

Abstract for Paper "Spatial Unit Roots in Regressions: A Practitioner’s Guide and a Stata Package"

🚨 New Working Paper 🚨

w/ @essobecker.bsky.social @jvoth.bsky.social

Do you run regressions on spatial data? Then keep reading!

We present a guide and Stata package for methods by Müller and Watson (2024) to deal with Spatial Unit Roots in Regressions.

Link in🧵(1/n)

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The hope is for future high speed rail projects to continue in a clockwise fashion back to Old Oak Common, at which point the lines will form a ring, referred to informally in policy circles as the HS25.

The year is 2047, plans for the new HS6 line from Old Oak Common to Walthamstow have been approved. In Walthamstow, passengers will be able to change to the recently opened HS5 line, which will take them speedily on to Woolwich and Bromley.

A great opportunity for PhD students to gather feedback on their work, learn from national and international colleagues, and build up networks. Submissions by 31st January 2025. Find out more: 👉 sites.google.com/view/warwick...

Oh for sure, but does that explain the discontinuities at the borders? (Which aren't all that apparent for Bonn)

Yes that kind of thing is what I had in mind. Hadn't appreciated the full scale of the horror of those ads though 😂

Free research idea: The borders of the Holy Roman Empire around 1200 and university choice in the 21st century.

(Insert hand-waving about network effects.)

Good point. Last attempt: maybe because the education system is so heavily federalised, universities advertise more intensely to secondary schools in the same state? Or the respective state ministry for education predominantly advertises degrees at unis in their state?

Oh okay, I didn't know that. So BW and BV unis didn't/don't give students any kind of transport discounts, or only within-city?

Second reason I could think of is that some fields (definitely teaching, maybe law) are still state-specific. E.g., with a teaching degree from Niedersachsen it is harder to become a teacher in Sachsen, etc. If people want to move back closer to home, this may lead to home-state bias.

Could it be partly that students often get heavily subsidised regional travel tickets from their universities, which only work within the respective state, and that students use these to visit home on weekends etc? May not be so relevant anymore with the 49-Euro ticket, but maybe in the past...

Elgar & Walton?

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