Samad Sarferaz

Malthus was right: new evidence from a time-varying VAR

Although Unified Growth Theory presumes the existence of the Maltusian mechanism in pre-industrial England recent empirical studies challenged this assumption. This paper studies the interaction of vital rates and real wages in the period from 1540 to 1870 in England. We employ time-varying VARs, an approach which addresses potential shortcomings such as parameter instability and declining volatilities in the previous literature. In contrast to recent studies, the main Malthusian mechanisms - the preventive and the positive check - were both at work until the mid-19th century. The preventive check was decreasing and the positive check increasing in importance. Most remarkably, the positive check dominated after the 1750s. The results indicate that instead of disappearing before the advent of the industrial revolution, the Malthusian mechanism rather changed its face over time.

Currency Versus Banking in the Financial Crisis of 1931

During the 1920s, Germany was the worlds largest capital importer, financing reparations through U.S. credits. We examine financial channels in crisis transmission between these two countries around the German financial crisis of 1931. We specify a structural dynamic factor model to identify financial and monetary factors separately for each of the two economies. We find substantial crisis transmission from Germany to the United States via the financial channel, while monetary or financial crisis transmission from the United States to Germany was weak. We also find major real effects of the 1931 crisis on both economies, again transmitted via the financial channel.

Modeling Multivariate Data Revisions

Data revisions in macroeconomic time series are typically studied in isolation ignoring the joint behaviour of revisions across different series. This ignores (i) the possibility that early releases of some series may help forecast revisions in other series and (ii) the problems statitical agencies may face in producing estimates consistent with accounting identities. This paper extends the Jacobs and van Norden (2011) modeling framework to multivariate data revisions. We consider systems of variables, where true values and news and noise can be correlated, and which may be linked by one or more identities. We show how to model such systems with standard linear state space models. We motivate and illustrate the multivariate modeling framework with Swiss current account data using Bayesian econometric methods for estimation and inference.

The U.S. Business Cycle, 1867–2006: A Dynamic Factor Approach

We estimate a Stock/Watson index of economic activity to assess U.S. business cycle volatility since 1867. We replicate the Great Moderation of the 1980s and 1990s and find exceptionally low volatility also in the Golden Age of the 1960s. Postwar moderation relative to pre-1914 occurs under constant but not time-varying factor loadings, suggesting structural change toward more volatile sectors. For comparable series, the U.S. postwar business cycle was as volatile overall as under the Classical Gold Standard, but much less so during the Great Moderation and the Golden Age.

How are Firms Affected by Exchange Rate Shocks? Evidence from Survey Based Impulse Responses

This paper studies the effects of a change in the Swiss franc/euro exchange rate floor, as introduced by the Swiss National Bank in September 2011 using a survey based impulse responses analysis. Survey based impulse responses incorporate experimental settings into representative firm surveys, expose firm executives to treatment or shock scenarios and evaluate the effects of the shocks on executives’ expected firm-level outcomes. Our results suggest that a change in the exchange rate floor from 1.20 to 1.10 Swiss francs per euro and a subsequent appreciation of the Swiss franc by the same magnitude considerably decreases expected turnovers, costs and profits of Swiss firms. Manufacturing turnover decreases by 3.3% within six months and by 4.3% within 18 months. Total costs decline by 1.3% within six months and 2.0% within 18 months, while profits shrink by 3.3% within six months. The effects are substantially lower for the service and the construction sector, but exhibit large variation across sub-sector industries. Panel regression analysis reveals that firm-specific export shares and intermediate goods import shares are key determinants of firms’ turnover, costs and profits reactions.

Konjunkturanalyse: Prognose 2016/2017, Preissenkungen haben Einbruch abgefedert – Abwertung hellt Aussichten auf

This text contains the autumn forecast 2015 of the KOF Swiss Economic Institute at ETH Zurich, released on 1 October 2015. The first part discusses recent economic developments abroad and in Switzerland, and presents the main forecast results across the various sectors of the economy. In the second part, detailed forecasts for Switzerland follow, split up into the main demand components of GDP. We expect the Swiss economy to grow by 0.9% in 2015, 1.4% in 2016 and 1.8% in 2017, respectively, representing a small upward revision compared with our last forecast from June 2015. In particular, the positive economic development in Europe and the depreciation of the Swiss franc during the second half of 2015 are specified as reasons for this adjustment. The negative price developments during the first half of 2015 are also newsworthy, as both the general price level and sales prices in certain sectors are falling.

Malthus and the Industrial Revolution: Evidence from a Time-Varying VAR

In the process of economic development economies grow through various regimes, each characterized by different demographic-economic interactions. The changes in these interactions are key elements in different explanations of the escape from Malthusian stagnation. We employ time-varying vector autoregressions, an approach that allows tracking this transition for England in the period between 1541 and 1870. The empirical findings suggest that the link between real wages and population growth was at work until the 19th century. Furthermore, we document changes in the propagation mechanism from real wages on population growth over time that feature prominently in Unified Growth Theory. Most remarkably, in contrast to earlier empirical literature we find strong effects of income on mortality after the 1750s.