Transparency and Forecasting: The Impact of Conditioning Assumptions on Forecast Accuracy
Katja Heinisch, Christoph Schult, Carola Stapper
Applied Economic Letters,
forthcoming
Abstract
This study investigates the impact of inaccurate assumptions on economic forecast precision. We construct a new dataset comprising an unbalanced panel of annual German GDP forecasts from various institutions, taking into account their underlying assumptions. We explicitly control for different forecast horizons to reflect the information available at the time of release. Our analysis reveals that approximately 75% of the variation in squared forecast errors can be attributed to the variation in squared errors of the initial assumptions. This finding emphasizes the importance of accurate assumptions in economic forecasting and suggests that forecasters should transparently disclose their assumptions to enhance the usefulness of their forecasts in shaping effective policy recommendations.
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12.08.2025 • 24/2025
20 years after Hurricane Katrina: Church membership contributed significantly to economic recovery
Katrina and other hurricanes caused devastating damage in the south-east of the USA in the summer of 2005. A study by the Halle Institute for Economic Research (IWH) shows: in the years following the disaster, establishments in counties with higher rates of church membership saw a significantly stronger recovery in terms of productivity.
Felix Noth
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07.08.2025 • 23/2025
IWH-Insolvenztrend: Mehr Firmenpleiten im Juli
Wie das Leibniz-Institut für Wirtschaftsforschung Halle (IWH) in einer heute veröffentlichten Analyse feststellt, ist die Zahl der Insolvenzen von Personen- und Kapitalgesellschaften in Deutschland im Juli deutlich angestiegen. Die Zahl der betroffenen Jobs ging zurück.
Steffen Müller
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Who is Using Robots in Germany?
Verena Plümpe
IFR International Federation of Robotics,
Member blog - Jul 09, 2025
2025
Abstract
IFR statistics show that Germany has consistently been a global top 5 robotics market for many years. They also provide distribution by industry. But what it does not show is who exactly is installing these robots and what distinguishes a robot user from a non-user. Data collected from nearly 16,000 plants by the Institute for Employment Research (IAB) of the Federal Employment Agency helps us to learn more about robot users in Germany.
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15.07.2025 • 22/2025
Sachsen-Anhalts Mittelstand weiter im Rückwärtsgang
Der Wirtschaftsabschwung in Sachsen-Anhalt ist offenbar noch nicht zu Ende. In einer gemeinsamen Umfrage von Creditreform und Leibniz-Institut für Wirtschaftsforschung Halle (IWH) beurteilten die mittelständischen Unternehmen die Geschäftslage im 1. Halbjahr 2025 schlechter als im Vorjahr. 410 Unternehmen aus Sachsen-Anhalt haben sich an der Befragung beteiligt.
Axel Lindner
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10.07.2025 • 21/2025
Einladung zur gemeinsamen Pressekonferenz von Leibniz-Institut für Wirtschaftsforschung Halle (IWH) und Creditreform am 15. Juli 2025 in Halle (Saale)
Seit über zwei Jahren schrumpft die wirtschaftliche Entwicklung in Sachsen-Anhalt. Die Hoffnungen auf eine Trendwende wurden zuletzt immer wieder enttäuscht. Kann der Negativtrend 2025 endlich gestoppt werden? Wie sind aktuell die Rahmenbedingungen für die mittelständischen Unternehmen im Land? Und wie bewerten sie Geschäftslage und Standort?
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08.07.2025 • 20/2025
IWH-Insolvenztrend: Höchstwert bei Insolvenzzahlen im zweiten Quartal trotz leichtem Rückgang im Juni
Wie das Leibniz-Institut für Wirtschaftsforschung Halle (IWH) in einer heute veröffentlichten Analyse feststellt, ist die Zahl der Insolvenzen von Personen- und Kapitalgesellschaften in Deutschland im Juni leicht gesunken. Im zweiten Quartal 2025 wurden dennoch die Rekordwerte des vorangegangenen Quartals übertroffen und die höchsten Insolvenzzahlen seit 2005 gemessen.
Steffen Müller
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Research for the labour market of tomorrow
Rafael Barth
Wirtschaft im Wandel,
No. 2,
2025
Abstract
The economic transformation is visibly reshaping the world of work. At the Halle Institute for Economic Research (IWH), the Structural Change and Productivity Department will intensify its analysis of these developments – and is evolving in the process. A high-profile conference with an unusual format recently provided important momentum.
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Tax Authority Attention and Financial Reporting
Iftekhar Hasan, Tahseen Hasan, Kose John
International Journal of Banking, Accounting and Finance,
No. 1,
2025
Abstract
We study the effects of Tax Authority (IRS) attention on a firm’s financial reporting. We explore whether firms institute a higher degree of accounting conservatism in response to IRS monitoring. Using data on IRS acquisition of public firms’ 10-K financial disclosures to proxy for IRS attention, we find that when firms are under IRS attention, they tend to initiate higher levels of unconditional and, to some extent, conditional accounting conservatism. We alleviate some of the endogeneity concerns by using pre- and post-IRS attention environments between the treated group (firms with IRS attention) and a propensity score that matches the control group of firms (no IRS attention). These results withstand several robustness tests and subsample analyses.
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12.06.2025 • 19/2025
Economic recovery in Germany – but structural problems and US trade policy weigh on the economy
The German economy has picked up somewhat in the first half of 2025. This was helped by the temporary increase in demand from the US in anticipation of higher tariffs. If the US does not escalate its trade conflicts further, production in Germany according to the summer forecast of the Halle Institute for Economic Research (IWH) is likely to increase a bit (by 0.4%) in 2025, after two years of decline. In March, the IWH economists were forecasting growth of 0.1% for the current year. Growth of 1.1% is forecast for the year 2026. Similar expansion rates are to be expected for East Germany.
Oliver Holtemöller
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