P David Boll
pdavidboll.bsky.social
P David Boll
@pdavidboll.bsky.social
Economics PhD student @warwickecon.bsky.social . Interested in labour markets. Confusingly goes by middle name.
https://www.pauldavidboll.com/
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.
pauldavidboll.com
November 5, 2025 at 8:35 PM
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.
October 30, 2025 at 10:44 AM
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.
October 30, 2025 at 10:31 AM
(Class and location/region that is.)
October 30, 2025 at 9:57 AM
It's very hard for Brits to wrap their heads around those two things not being the same thing.
October 30, 2025 at 9:55 AM
Related to 3.: Further improvements in e-learning technology, increasing scalability for the "best" educators and displacing the others?
April 24, 2025 at 7:42 PM
It says "one of the closest", to be precise.
April 9, 2025 at 2:15 PM
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?
March 18, 2025 at 10:16 AM
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.
March 8, 2025 at 5:36 PM
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, ...).
February 24, 2025 at 1:19 PM
January 22, 2025 at 12:23 PM
Questions and comments welcome !

(n/n)
January 22, 2025 at 12:17 PM
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)
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
github.com
January 22, 2025 at 12:17 PM
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)
January 22, 2025 at 12:17 PM
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)
warwick.ac.uk
January 22, 2025 at 12:17 PM
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.
December 18, 2024 at 11:33 PM
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.
December 18, 2024 at 11:24 PM