Philipp Heimberger
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heimbergecon.bsky.social
Philipp Heimberger
@heimbergecon.bsky.social

Vienna Institute for International Economic Studies (wiiw); macroeconomics, economic policy, public finance, political economy, meta-science.

Economics 86%
Political science 11%

This study shows: many top LLMs routinely overgeneralise scientific results (e.g. omitting details limiting the scope), even when asked for accuracy. Newer LLMs often performed worse. This bias risks widespread misinterpretation of research, highlighting the need for mitigation.

This paper provides survey-based evidence that socialising across political divides can change opinions and reduce political polarisation. Using Thanksgiving as a natural experiment, it shows that people shift toward their families’ views after the holiday.

Reposted by Dave O’Brien

Even after two world wars and a century of upheaval, wealth in 🇩🇪 shows strong persistence. About 8% of today’s top fortunes trace back to the early 1900s: 82 of the richest families today were already among the richest in 1913, challenging the idea of a fully meritocratic elite.

Reposted by Samuel Bentolila

A great AI-based conversation with Keynes, drawing on a model grounded in Keynes' writings and audio. It explores how his ideas and predictions on productivity, unemployment and financial-markets have held up over the last century, considering the emergence of AI.

Reposted by Matthias Schnetzer

Our paper is out in "Applied Economics Letters". Public investment shocks in EU27 (a) have favourable effects on output (investment multpliers >1) and unemployment (short to medium run); (b) don't crowd out private investment; and (c) don't jeopardise public debt sustainability.

Reposted by Jonathan Portes

My paper on fiscal consolidation, its growth effects and implications for debt sustainability assessments is out in the December '25 issue of "Review of Evolutionary Political Economy". I review €zone fiscal consolidations and what the research record shows about growth effects.

German exports in machinery and autos/parts to China have declined strongly. The decline is ~0.8%-points of GDP per year relative to the peak export shares.

chart via Brad Setser

John Maynard Keynes wasn’t just a legendary economic and philosophical thinker, he was also an exceptional investor. Managing King’s College Cambridge’s endowment (1922–1946), he delivered ~15% annual investment returns, outperforming equity markets.

Lending rates are falling as monetary policy eases, but unevenly. Household borrowing costs have declined less than those of firms, as household loans are typically tied to longer-term rates and fixed for longer periods, while long-term market rates have fallen only modestly.

The 2002 steel tariffs in the US (under president George W. Bush) created persistent negative employment effects in manufacturing industries that rely on steel as an input - despite being removed after 18 months.

New evidence in "American Economic Journal: Economic Policy":

The Austrian National Bank (OeNB) will fund our 3-year project “Understanding people’s views on fiscal policy.” We'll use survey experiments to study expectations about fiscal policy effects, views on propagation mechanisms, fiscal preferences shaped by trust and trade-offs etc.

ieo.imf.org

This is an interesting summary of the IMF's shifting recommendations regarding the appropriate fiscal stance in advanced economies.
Neuer #Fiskalrat-#Budget-Bericht: Doppelbudget ist auf Kurs, aber es bleibt viel zu tun, um die mittelfristigen Budgetziele zu erreichen - insbesondere für das #Budget2027. Implizite Aussage: Die jüngste mediale Aufregung um angeblich explodierende Länder-Defizite bleibt nicht nachvollziehbar. Ein 🧵

Here is the link to our paper: sciencedirect.com/science/arti... And here is the source on most popular, most downloaded and top cited EER papers: sciencedirect.com/journal/euro... (joint work with @sgechert.bsky.social)

Corporate tax cuts have received a lot of intention in debates on reforms as a source of economic growth. Given the variance, there may be cases with positive or negative growth effects of corporate tax cuts, but our results suggest that this focus has often be exaggerated. /7

Our findings are consistent with the nuanced recent theoretical growth literature stressing various (partly competing) channels – such as knock-on effects on R&D incentives or labour supply – through which corporate tax changes can affect growth both positively and negatively. /6

We also find that several factors influence reported estimates, including researcher choices concerning the measurement of growth and corporate taxes, and controlling for other budgetary components. /5

Correcting for this bias, we cannot reject the hypothesis that the effect of corporate taxes on growth is zero. We show that this finding holds when we account for potential endogeneity issues between corporate taxes and growth. /4