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Referierte Aufsätze Web of Science
This paper studies the impact of financial investments on agricultural futures prices, using structural vector autoregressions. We identify exogenous variation in net long positions of speculators through heteroskedasticity. We first show that demand shocks of both index investors and noncommercial traders lead to a statistically significant contemporaneous increase in futures prices. We then quantify ...
In:
American Journal of Agricultural Economics
102 (2020), 3, S. 759-785
| Michael Hachula, Malte Rieth
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Referierte Aufsätze Web of Science
owohl die Praxisliteratur zum Einrichtungsmanagement als auch der Gesetzgeber sehen pädagogische Konzeptionen als ein probates Mittel zur Steuerung der Qualität von Kindertageseinrichtungen. Die vorliegende Studie untersuchte 583 Kita-Konzeptionen von Einrichtungen aus ganz Deutschland mithilfe eines neu entwickelten Codierschemas und quantitativen Analysemethoden. Im Zentrum stehen zwei Fragen: erstens ...
In:
Zeitschrift für Erziehungswissenschaft
23 (2020), 3, S. 509–537
| Susanne Kuger, Birgit Becker, C. Katharina Spieß
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Referierte Aufsätze Web of Science
The measurement scale of exam scores is ordinal. This ordinal measurement implies that monotonic transformations of published scales convey the same information. Hence, countries should not be ranked according to averaged scores because there may be transformations that would change the mean-based rankings. We suggest alternatives to the mean-based ranking procedure that yield informative and robust ...
In:
Journal of Economics
129 (2020), 3, S. 271-296
| Carsten Schröder, Shlomo Yitzhaki
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Referierte Aufsätze Web of Science
We introduce a selection model‐based multilevel imputation approach to be used within the fully conditional specification framework for multiple imputation. Concretely, we apply a censored bivariate probit model to describe binary variables assumed to be missing not at random. The first equation of the model defines the regression model for the missing data mechanism. The second equation specifies ...
In:
Journal of the Royal Statistical Society / Series C
69 (2020), 3, S. 547–564
| Angelina Hammon, Sabine Zinn
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Referierte Aufsätze Web of Science
We examine the composition of augmented household wealth, the sum of net worth and pension wealth, in the United States and Germany. Pension wealth makes up a considerable portion of household wealth of about 48% in the United States and 61% in Germany. When pension wealth is included in household wealth, the Gini coefficient falls from 0.889 to 0.700 in the United States and from 0.755 to 0.508 in ...
In:
The Scandinavian Journal of Economics
122 (2020), 3,S. 1140-1180
| Timm Bönke, Markus M. Grabka, Carsten Schröder, Edward N. Wolff
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Referierte Aufsätze Web of Science
Identification through heteroskedasticity in heteroskedastic simultaneous equations models (HSEMs) is considered. The possibility that heteroskedasticity identifies structural parameters only partially is explicitly allowed for. The asymptotic properties of the identified parameters are derived. Moreover, tests for identification through heteroskedasticity are developed and their asymptotic distributions ...
In:
Journal of Econometrics
218 (2020), 2, S. 317-345
| Helmut Lütkepohl, George Milunovich, Minxian Yang
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Referierte Aufsätze Web of Science
Glucose regulation is a key aspect of healthy aging and has been linked to brainfunctioning and cognition. Here, we examined the role of glucose regulation for withinpersonlongitudinal trajectories of well-being. We applied growth models to data fromthe Berlin Aging Study II (N = 1,437), using insulin resistance as an index of glucoregulatorycapacity. We found that poor glucose regulation (higher insulin ...
In:
Psychology and Aging
35 (2020), 2, S. 204-211
| Johanna Drewelies, Sandra Duezel, Nikolaus Buchmann, Elisabeth Steinhagen-Thiessen, Gert G. Wagner, Naftali Raz, Ulman Lindenberger, Ilja Demuth, Denis Gerstorf
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Referierte Aufsätze Web of Science
The spread of the novel coronavirus, SARS-CoV-2, poses major challenges for individuals and societies at large. The question now is how individuals and society are dealing with these challenges, and what health, psychological, social, and economic effects they will have to bear. Meaningful answers can only be provided using a generalizable database that contains contextual information such as family ...
In:
Survey Research Methods
14 (2020), 2, S. 195-203
| Simon Kühne, Martin Kroh, Stefan Liebig, Sabine Zinn
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Referierte Aufsätze Web of Science
Although unemployment likely entails various externalities, research examining its spillover effects on spouses is scarce. This is the first paper to estimate effects of unemployment on the smoking behavior of both spouses. Using German Socio‐Economic Panel data, we combine matching and difference‐in‐differences estimation, employing the post‐double‐selection method for control variable selection via ...
In:
Health Economics
29 (2020), 2, S. 154-170
| Jakob Everding, Jan Marcus
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Referierte Aufsätze Web of Science
We exploit a new dataset based on European Union (EU) procurement award notices to investigate the relationship between the degree of centralization of public procurement and its performance. We focus on the case of Italy, where all levels of government, along with a number of other public institutions, are involved in procurement and are subject to the same EU regulation. We find that (a) municipalities ...
In:
Economic Inquiry
58 (2020), 2, S. 856-880
| Olga Chiappinelli