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Philipp Moskopp

@philippmoskopp.bsky.social
94 followers 443 following 2 posts

Economics PhD Student at @eegmpi.bsky.social and University of Cologne | Interested in Migration, Education, and Evidence-Based Policymaking

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Reposted by Philipp Moskopp
Joshua Goodman @joshua-goodman.com · 31/08/2026
🚨New working paper alert!🚨 Private tutoring chains like Kumon and Sylvan have grown rapidly. Who uses them? Do they improve kids' skills? BU econ PhD student Samuel Nitkin and I provide answers in: "Kumon Up: Private Tutoring Centers and Student Achievement" www.nber.org/papers/w35671 1/?
Private tutoring chains like Kumon and Sylvan have expanded rapidly in recent decades.
Combining data on business locations, household spending, and district test scores, we study who
uses these centers and how they affect academic skills. Nearly half of tutoring users are from the top
income decile, with Asian and White households five and two times as likely to purchase tutoring as
Black and Hispanic households. A staggered differences-in-differences design shows the opening
of a district's first chain center raises district-wide math and reading scores by 0.02-0.03 standard
deviations, at a much lower cost than public spending typically producing similar gains. Math
effects are largest for White and Asian students, so that center entry widens racial achievement
gaps, though less so in more racially integrated districts. These private investments help their
users, deepen educational inequality, and shape outcomes by which state accountability systems
and families judge schools.
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Eva Vivalt @evavivalt.bsky.social · 10/08/2026
What happens when someone receives $1,000/month for 3 years? The effects don't stop with the recipient. In this new NBER working paper, we examine what changed for partners, households, friends & family after 1,000 people received $1,000/month with 2,000 in a control group. 🧵1/
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jeeanews.bsky.social @jeeanews.bsky.social · 23/07/2026
Forthcoming article "Climate Change and Migration: The Case of Africa" by Bruno Conte @eeanews.bsky.social doi.org/10.1093/jeea...
doi.org
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Michael Clemens @mclem.org · 26/06/2026
🗣️ Published today in @aeajournals.bsky.social. Ethan Lewis and I use a visa lottery, as a nationwide randomized experiment, to test the effects of foreign labor on US firms and workers. doi.org/10.1257/app.... A concise summary from @nber.org —> www.nber.org/digest/20221...
Abstract: 
US firms hiring foreign workers in low-skill nonfarm jobs face a binding quota on the "H-2B" visa, allocated in part through a randomized lottery. We evaluate the quota's marginal impact using the lottery, a novel firm survey, and a pre-analysis plan. Firms exogenously employing more H-2B workers in low-skill jobs increase production (elasticity 0.20–0.22), investment (1.5–2.1), and profits (0.15). The elasticity of substitution between H-2B and US workers is very low (0.8–2.2). Thus, the effect on US employment is zero or positive overall, and positive in rural areas. Forensic analysis suggests similarly low substitutability of black-market labor.
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Julius Kölzer @juliusk.bsky.social · 27/06/2026
81 % of eastern German municipalities have fewer residents today than in 1985. Losses cluster especially in Pommerania and rural Sachsen-Anhalt, where towns often shrank by a third or more. Growth is almost entirely confined to larger cities like Berlin & Leipzig and their commuter belts.
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Ludger Woessmann @woessmann.bsky.social · 26/06/2026
📢 We are hiring 📢 Please spread the word: We are hiring a 🧑‍🎓 Postdoc (up to 6 years, non-tenure track) at the ifo Center for the Economics of Education! Come join our team as junior faculty: www.ifo.de/en/job-offer... Application deadline: July 22
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Moritz Marbach @moritz-marbach.com · 15/04/2026
🚨New Paper in PNAS: "Refugee Labor Market Integration at Scale: Evidence from Germany’s Fast-Track Employment Program" www.pnas.org/doi/10.1073/... Ungated preprint osf.io/preprints/socarxiv/px9ew_v3 w/ J Hainmueller, D Hangartner, @niklas-harder.bsky.social & E Vallizadeh #econtwitter #econsky
pnas.org
Refugee labor market integration at scale: Evidence from Germany’s fast-track employment program | PNAS
Governments face persistent challenges in integrating refugees into the local labor market, and many past interventions have shown limited impact. ...
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Econometrica @ecmaeditors.bsky.social · 16/02/2026
Can cities in developing countries create enough good jobs for climate migrants? @gulyssea.bsky.social and @clementimbert.bsky.social show that, over a decade, drought-induced immigration decreases informality and increases the number of formal firms and jobs in Brazil. buff.ly/d3h4E6p
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Michael Clemens @mclem.org · 04/02/2026
The native workforces of today's wealthiest countries are rapidly disappearing due to fertility that is low and very unlikely to rise—ever, and certainly not in time to make a difference. The brilliant Lant Pritchett spells out the implications for migration policy: www.aeaweb.org/articles?id=...
aeaweb.org
Global Labor Mobility between Shrinking and Growing Labor Forces
(Winter 2026) - Falling fertility and improved mortality create a powerful and inexorable demographic arithmetic of ageing in the coming decades around the world, with three patterns. The richest coun...
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VoxDev @voxdev.bsky.social · 05/01/2026
📢 International migration is one of the most powerful tools available for poverty reduction and economic development. At our VoxDevLit launch event on January 14, Dean Yang will summarise evidence on international migration. Register➡️ ow.ly/y5n150XRWT9
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AEA Journals @aeajournals.bsky.social · 19/12/2025
Forthcoming in the AER: "Abundance from Abroad: Migrant Income and Long-Run Economic Development" by Gaurav Khanna, Emir Murathanoglu, Caroline Theoharides, and Dean Yang. www.aeaweb.org/articles?id=...
aeaweb.org
Abundance from Abroad: Migrant Income and Long-Run Economic Development
(Forthcoming Article) - We study how international migrant income prospects affect long-run development in origin areas. We leverage the 1997 Asian Financial Crisis exchange rate shocks in a shift-sha...
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Saloni @scientificdiscovery.dev · 09/12/2025
Big new blogpost! My guide to data visualization, which includes a very long table of contents, tons of charts, and more. --> Why data visualization matters and how to make charts more effective, clear, transparent, and sometimes, beautiful. www.scientificdiscovery.dev/p/salonis-gu...
screenshot of my post
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Johannes Haushofer @johanneshaushofer.com · 27/11/2025
Exciting news on @malengo.org, the NGO that helps East African students move to Europe for education: Our research team has given us a glimpse of their early findings! Here is the full writeup, joint with @richardnerland.bsky.social: forum.effectivealtruism.org/posts/CpZYHk... Thread follows!
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Todd Pugatch @toddpugatch.bsky.social · 06/11/2025
An Imbens retrospective on experimental v. non-experimental methods — looks like a must-read www.aeaweb.org/articles?id=...
aeaweb.org
Comparing Experimental and Nonexperimental Methods: What Lessons Have We Learned Four Decades after LaLonde (1986)?
(Fall 2025) - In 1986, Robert LaLonde published an article comparing nonexperimental estimates to experimental benchmarks (LaLonde 1986). He concluded that the nonexperimental methods at the time coul...
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VoxDev @voxdev.bsky.social · 21/10/2025
🆕 From brain drain to brain bridges: How mobile PhD scientists connect home countries to global science Today on VoxDev w/ Rodrigo Ito @unumerit.bsky.social, Diego Chavarro, Tommaso Ciarli, Robin Cowan (University of Strasbourg) & Fabiana Visentin (Masstricht University): voxdev.org/topic/migrat...
voxdev.org
From brain drain to brain bridges: How mobile PhD scientists connect home countries to global science
Internationally trained PhDs are often seen as a ‘brain drain’, but evidence from Colombia suggests that they act as crucial bridges – connecting local researchers to the global scientific community.
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Julia M. Rohrer @dingdingpeng.the100.ci · 13/10/2025
New blog post! Let's say you have two measures meant to capture the same confounder. They're highly correlated. Can you still proceed with your regression analysis? (I admit, the title is a bit of a spoiler) www.the100.ci/2025/10/13/i...
the100.ci
If you have two measures of the same confounder, you can just include both of them in your regression model
Sometimes, researchers worry about multicollinearity in situations where it’s actually a non-issue. Here’s one such scenario. Imagine a situation where you are interested in the effect of X on Y (X...
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David McKenzie @dmckenzie.bsky.social · 29/09/2025
In today's blog, I discuss 3 ways for international migration to be part of a structural transformation policy: 1) as an industry itself; 2) training people abroad in the skills to develop a new industry at home; and 3) through immigration (eg Start-up Chile) blogs.worldbank.org/en/impacteva...
blogs.worldbank.org
International Migration as a Structural Transformation Policy
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NOVAFRICA @novafrica.bsky.social · 27/09/2025
Conference on Migration and Education – Sep 30 | Cabo Verde NOVAFRICA promotes a discussion on youth & high-skilled migration and its impact on economic development. w/ #NovaSBE #EconomicsEducationKC @liser.lu & #UnivCaboVerde Program: bit.ly/4nJoXya Watch live: www.youtube.com/live/xrv5T0X...
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LISER's Crossing Borders Research Programme @liser-cb.bsky.social · 06/08/2025
📣 Call for Papers 📣 🌐 15th Annual International Conference on #Immigration in OECD Countries - Dec. 11- 12. 🗣️ With Keynotes from ‪‪‬@christinafelfe.bsky.social & @profdaviddorn.bsky.social ⏳ Submit by September 15th 🔗 immigoecd15.sciencesconf.org #EconSky #EconConf #Migration
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NBER @nber.org · 04/07/2025
New evidence that immigration raises intergenerational mobility, from Mark Borgschulte, Heepyung Cho, Darren Lubotsky, and Jonathan L. Rothbaum www.nber.org/papers/w33961
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Ludger Woessmann @woessmann.bsky.social · 23/06/2025
📢 New paper in the Economic Journal (@resmedia.bsky.social): 👉 Differences in patience can account for substantial regional variation in educational achievement within countries Data on Facebook interests allow us to derive regional measures of patience academic.oup.com/ej/advance-a... A 🧵 1/9
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Max Planck Institute for Behavioral Economics @econmpi.bsky.social · 16/06/2025
We hosted the SEEDEC symposium together with @fair-cele.bsky.social, organized by @vincentsomville.bsky.social. We enjoyed keynotes from @ggenicot.bsky.social and David McKenzie, lively discussions and great presentations. Thank you all who participated!
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Aaron Sojourner @aaronsojourner.org · 27/05/2025
Giving +$313/mo ($3756/yr) in unconditional cash to low-income U.S. families with new babies doesn't seem to improve the children's development at age 4, per multi-city field experiment by child poverty & development researchers. Relevant to debates on CTC & baby bonus www.nber.org/papers/w3384...
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Johannes Haushofer @johanneshaushofer.com · 22/05/2025
Is it "good" or "bad" when skilled people leave low-income countries? We summarized the evidence in favor of "brain gain" vs. "brain drain": www.science.org/doi/epdf/10.... Ungated PDF: johanneshaushofer.com/research
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Joshua Goodman @joshua-goodman.com · 06/05/2025
Loving this NY Times article on "The Surprising Ways That Siblings Shape Our Lives." It features our work showing that, across the globe, older sibs' college choices affect those of their younger sibs. www.nytimes.com/2025/05/06/m...
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Carl T. Bergstrom @carlbergstrom.com · 29/04/2025
1. Can you figure out where I was standing when I took this picture? ChatGPT could. Given the photograph (scrubbed of all header information), the new chain of thought model, ChatGPT o.3, was able to pinpoint the location with a few meters.
A cityscape at twilight, from the middle of a street.
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John A. List @johnlist.bsky.social · 09/04/2025
This was a productive episode to do since I remain with the thought that the most important area of science we can be engaged in today is the science of scaling, or the science of using science.
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Stefanie Stantcheva @s-stantcheva.bsky.social · 21/03/2025
Understanding causality vs. correlation is genuinely hard especially on complex topics like inflation. Our research finds that 60% of Americans think high interest rates cause high inflation & support rate cuts to fight it. But high rates usually respond to inflation,not cause it
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Martín Fernández @martinfs23.bsky.social · 11/03/2025
What better way to start using this platform than to tell you about our Visiting Program on Migration 🌐. Every month a migration expert visits LISER for a few days. Among other things, we made short videos about their latest research, check them out here 👇: @liser.lu @liser-cb.bsky.social
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Mathias Fjællegaard Jensen @fjaellegaard.bsky.social · 21/02/2025
1/ 🚨 New paper! 🚨 How do the economic trajectories of children of immigrants vary across 15 high-income countries? We study intergenerational mobility of immigrants, using individual-level linked parent-child data across Europe, North America, and beyond. 🧵👇 #EconSky
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FAIR - The Choice Lab @fair-thechoicelab.bsky.social · 04/02/2025
❗Deadline Approaching for SEEDEC 2025! Don't miss your chance to register for the Symposium on Economic Experiments in Developing Countries (SEEDEC 2025) in Bonn, Germany! ⏳ Registration deadline: March 1, 2025 🔗 www.nhh.no/en/research-... @vincentsomville.bsky.social
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Peter Hull @instrumenthull.bsky.social · 13/02/2025
Our practical guide to shift-share IV is now out in the JEP! www.aeaweb.org/issues/793 (Ungated version: www.dropbox.com/scl/fi/el9yn...)
aeaweb.org
Journal of Economic Perspectives
Vol. 39 No. 1 Winter 2025
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Aaron Sojourner @aaronsojourner.org · 10/02/2025
How much student learning do you think a school district could gain just by better assigning its teachers to schools? Consider a quite politically-feasible change. Do not let district make any assigned teacher worse off, nor change teacher hiring, nor compensation, nor the students. New evidence!
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Jessica Leight @leightjessica.bsky.social · 16/01/2025
In case you missed it on the other site: fascinating new [preliminary] RCT evidence that use of chatgpt as an after-school tutoring method in Nigeria *dramatically* shifted learning outcomes #econsky blogs.worldbank.org/en/education...
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AEA Journals @aeajournals.bsky.social · 19/12/2024
Forthcoming in AEJ: Economic Policy: "Does the “Boost for Mathematics” Boost Mathematics? A Large-Scale Evaluation of the “Lesson Study” Methodology on Student Performance" by Erik Grönqvist, Björn Öckert, and Olof Rosenqvist. www.aeaweb.org/articles?id=...
aeaweb.org
Does the “Boost for Mathematics” Boost Mathematics? A Large-Scale Evaluation of the “Lesson Study” Methodology on Student Performance
(Forthcoming Article) - Students in East Asian countries dominate international assessments. One possible explanation for their success is the use of “Lesson study” to enhance teaching practices; a co...
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Johannes Haushofer @johanneshaushofer.com · 09/12/2024
I'm very excited to join the Brooks School of Public Policy and the Department of Economics at @cornelluniversity.bsky.social in January. And we're hiring pre-doc fellows in development economics! Great 1–2 year PhD preparation. Please share widely! cornell.wd1.myworkdayjobs.com/CornellCaree...
cornell.wd1.myworkdayjobs.com
Pre-Doctoral Fellow, Cornell Collaborative for International Development Economics Research (CIDER), Cornell University
CIDER: The Cornell Collaborative for International Development Economics Research (CIDER) is a new cross-campus venture at Cornell University encompassing 23 faculty from multiple units across the Cor...
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Rafe Meager (they/them) @economeager.bsky.social · 27/11/2024
We still have a relatively poor understanding of the relationship between evidence and policy. Program evaluation in particular is often motivated by a desire to make policy better. But how effective is program evaluation itself?Michelle Rao's JMP tackles this question. www.michellerao.com/research
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Philipp Moskopp @philippmoskopp.bsky.social · 25/11/2024
Come work with us on international educational migration! 🌍 We’re hiring a #PreDoc at @eegmpi.bsky.social in Bonn. Join a team of fantastic researchers to work on an ambitious RCT with real-world impact. 📢 We are excited to hear from you! career.coll.mpg.de/jobposting/c... #econ_ra #EconSky
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Prof Dynarski @dynarski.bsky.social · 18/11/2024
Holy crap this is an astounding piece of historical research Will post ungated link later today unless someone beats me to it www.nber.org/system/files...
The G.I. Bill, Standardized Testing, and Socioeconomic Origins of the U.S. Educational Elite Over a Century
Ran Abramitzky, Jennifer K. Kowalski, Santiago Pérez, and Joseph Price
NBER Working Paper No. 33164
November 2024
JEL No. 123, 124, N32
ABSTRACT
We compile, transcribe, and standardize historical records for 2.5 million students at 65 elite (private and public) U.S. colleges. By combining these data with more recent survey and administrative data, we assemble the largest dataset on the socioeconomic backgrounds of students at American colleges spanning the last 100 years. We document the following: First, despite a large increase in the share of lower-income students in the overall college-going population, the representation of these students at elite private or public colleges has remained at similarly low levels throughout the last century. Second, the representation of upper-income students at elite colleges decreased after World War II, but this group has regained its high representation since the 1980s. Third, while there has been no increase in the economic diversity of elite private and public colleges, these colleges have become more racially and geographically diverse. Fourth, two major policy changes in the history of American higher education, namely the G.I. Bill after World War II and the introduction of standardized tests for admissions, had little success in increasing the representation of lower- and middle-income students at elite colleges.
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John Burn-Murdoch @jburnmurdoch.ft.com · 19/11/2024
This is really getting quite remarkable • BlueSky user numbers have doubled in the past week and now total 3.5 million across US & UK 🚀 • Number of people deleting their X/Twitter account remains way up And the next chart is particularly notable...
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Carlisle Rainey 👨‍💻📊📚 @carlislerainey.bsky.social · 17/11/2024
"Power Rules: Practical Statistical Power Calculations" Among other things, I write about how researchers might use pilot data to inform power calculations. Feedback welcomed! www.carlislerainey.com/power-rules/...
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