Forschungskolloquium


Colloquium Series

Wednesday Faculty Colloquium



Organizers
Burgard, Bendig, Chwolka, Eichfelder, Ehmke, Enke, Gischer, Gropp, Kiesmüller, R. Kirstein, Knabe, Koetter, Kvasnicka, Lukas, St. Müller, Noth, Paqué, Raith, Reichling, Sadrieh, Sarstedt, Schöndube-Pirchegger, Spengler, Vogt, Weimann,
Colonnello, Held, Lichters, Qizhou Xiong,
Bortfeldt, A. Kirstein, Kleber

Spokesmen
Prof. Dr. Gudrun P. Kiesmüller/Prof. Dr. Michael Kvasnicka
gudrun.kiesmueller@ovgu.de/+49 391-67-58798
michael.kvasnicka@ovgu.de/+49 391-67-58739


Coordinator
Renate Bauske
Renate.Bauske@ovgu.de
+49 391 67-58762

Time and Room
Time: Wednesdays, 3 pm s.t. - 5 pm
(exceptions will be noted below)
Location: Campus, building 22, room A-225 (Fakultätszentrum)




Date Speaker/Author Title
We. 24/04/19
3:00 pm
Fakultätszentrum


Prof. Dr. Daniel Fürstenau,
Freie Universität Berlin,
Office hour: 2 to 2:45 pm., G22 A359
Inviting person:
Prof. Dr. Jan Fabian Ehmke
Innovation and Inertia in Digital Infrastructures: A Network-Theoretic Approach

Theoretical and empirical considerations on the transformation of infrastructures are increasingly important in a digitalized world. The generativity, complexity and growth of digital infrastructures and platforms will be considered in this talk. Supported by a network-theoretical analysis framework and illustrated by case studies from the fields of banking, health care and service industries, my academic work helps to shape IT architectures in the digital age.

We. 15/05/19
3:00 pm
Fakultätszentrum


Prof. Dr. Frank Heinemann,
Technische Universität Berlin,
Office hour: 2 to 2:45 pm, G22 A301,
Meeting Room of the Chair of Empirical Economics
Inviting person:
Prof. Dr. Dr. Bodo Vogt
An Experimental Test of the Global?Game Selection in Games with Asymmetric Players

This paper compares the theoretical predictions obtained from the global?game selection (GGS) with empirical results from experiments and discusses whether and how the GGS can be used as descriptive theory. Based on new results for the equilibrium characterization, the paper demonstrates how to decompose a game with different player types in such a way that the GGS of an asymmetric coordination game can be derived by simple solution techniques. Using data from experiments on symmetric and asymmetric one?shot coordination games, it compares the predictive power of the GGS with that of other selection theories. While in symmetric games, the GGS predicts a high proportion of observed choices correctly, the GGS provides poor guidance in asymmetric games, where it also fails to give the right qualitative comparative statics predictions. Simple cognitive hierarchy models yield better predictions. The best response to a Laplacian belief about the distribution of other players’ actions yields the best prediction in symmetric and asymmetric games. Comparing maximum likelihood estimates for four probabilistic models shows that an estimated globalgame equilibrium fits worse than a rather simple level?k or Laplacian belief model combined with a standard error?response function.

We. 22/05/19
3:00 pm
Fakultätszentrum


Prof. Dr. Ovidiu Ioan Moisescu,
Universitatea Babes-Bolyai, Cluj-Napoca, Romania,
Office hour: 04:30 - 05:30 pm. ,
Fakultätszentrum
Inviting person:
Prof. Dr. Marko Sarstedt
Discriminant Validity of the Customer-based Corporate Reputation Scale. Some Causes for Concern

A company’s reputation has long been acknowledged as one of its most important intangible assets for lasting company success. To actively manage and reap the benefits of a favorable corporate reputation, researchers and practitioners need to adequately measure the concept. Using data from end-use customers in two countries and two service industries, this research reexamines the discriminant validity of the customer-based corporate reputation scale – the most popular measure of corporate reputation – in both its original and short form. The study’s findings demonstrate that the customer-based corporate reputation scale in both its original and short form lacks discriminant validity when using the HTMT-based inference test. Conversely, the discriminant validity of the five corporate reputation dimensions is generally supported when using the more liberal Fornell-Larcker criterion. These results suggest that future studies employing the scale in either the original or its short form should rely on the more stringent HTMT criterion to ensure the discriminant validity of the scale’s five dimensions.

We. 03/07/19
3:00 pm
Fakultätszentrum

Dr. Gregor Pfeifer, Universität Hohenheim,
Office hour: 4:45 to 5:30 pm., G22 D-104
Inviting person:
Prof. Dr. Michael Kvasnicka
The Morning After: Prescription-Free Access to Emergency Contraceptive Pills

We analyze the introduction of prescription-free access to morning-after pills – emergency contraceptives aiming to prevent unintended pregnancy and subsequent abortion after unprotected sexual intercourse. Exploiting a staggered difference-in-differences setting for Europe combined with randomization inference, we find sharp increases in sales and manufacturers’ revenue (ca. 100%). However, whilst having no effect on abortions, the policy triggers an unexpected increase in fertility of 4%, particularly among women aged 25-34. We elaborate on mechanisms by looking at within-country evidence from Germany, which suggests that fertility is driven by decreasing use of birth control pills in response to easier access to morning-after pills.



Idee und Umsetzung: Prof. Dr. Abdolkarim Sadrieh und Dipl.-Kfm. Harald Wypior | © 2019

Letzte Änderung: 17.07.2019 - Ansprechpartner: Webmaster