P David Boll

🚨Deadline approaching🚨

Submit your extended abstracts to the Warwick Economics PhD Conference 2026 by 31st January!

Great research + great people + free accommodation + travel funding!

For further info follow link below. Please share widely!

We presented results on spatial unit roots etc at ASSA 2026 in Philadelphia.
Joint work with @pdavidboll.bsky.social and @jvoth.bsky.social

Short 🧵 (1/N)

cc @andreamatranga.bsky.social @paulgp.com

Three SIOE @sioecon.bsky.social sessions on Sat 3rd Jan 2026 at @assameeting.bsky.social Philadelphia

0800-1000: Education, Immigration, and Knowledge Diffusion

1015-1215: Econometric Issues in Comparative Economics

1430-1630: Models of Autocracy

See you there!

Even ignoring any fairness concerns, allowing scams like this to soak up productive capacity is bad economic policy. It's hard to think of a more obvious example of pure rent-seeking.

14th Economics PhD Conference 25-27 May 2026

Another 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 2026. Find out more: sites.google.com/view/warwick...

PhD Students in Econ (and related fields): Join us at Warwick for a 3 day conference in May 2026!

There will be sessions covering all major fields, along with two great keynotes and plenty of time to socialise with peers.

We look forward to your submission (deadline: 31/01/2026), more info below.

Link to new version: pauldavidboll.com/SPUR_Stata_J...

Stata package:
github.com/pdavidboll/S...

The new title reflects that we have significantly extended the practical application section to make this paper more useful to applied researchers generally, regardless of software persuasion.

🚨 New Version 🚨

The new and extended version of our paper on dealing with spatial unit roots in regressions, now
*forthcoming at the Stata Journal* under a new title!

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

Relevant to anyone who uses spatial data !

Link and more information in🧵(1/n)

For sure, but I still think they're both important. E.g., much lower AfD vote share in Niedersachsen and Schleswig-Holstein compared to former DDR, despite being similarly protestant.

Speaking very much as a non-expert, I'd say the first two are the main ones, but all of them to some extent. The main difference to Britain, it seems to me, is that class gradients exist mostly _within_ regions rather than across.

(Class and location/region that is.)

It's very hard for Brits to wrap their heads around those two things not being the same thing.

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.

Home - KSE Charitable Foundation

It was time to donate again to the 🇺🇦 Kyiv School of Economics led by the amazing @tymofiibrik.bsky.social and @mylovanov.bsky.social 🇺🇦

If you want to support KSE in these tough times 👇

foundation.kse.ua/en

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)

#EconSky

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)

🚨 Deadline approaching 🚨

PhD students in Econ and related fields, please submit your extended abstracts for our PhD conference *by 31st Jan*!

We pay for your travel, accommodation and food, and we always have great speakers and lots of fun!

More info and submission form below.

#EconSky
#EconPhD

🚨 Deadline approaching! 🚨

Apply for the 13th Warwick Economics PhD conference, taking place from 3-5 June 2025.

Applications are welcome from every field in economics. Accommodation and travel costs will be covered.

Keynotes by Prof Stefano Caria and Dr Amrita Kulka

👉 deadline: 31st January!

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.