Auflistung nach Autor:in "Zimmermann, Steffen"
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- ZeitschriftenartikelBeing Informed or Getting the Product?(Business & Information Systems Engineering: Vol. 64, No. 5, 2022) Wrabel, Andrea; Kupfer, Alexander; Zimmermann, SteffenScarcity cues, which are increasingly implemented on e-commerce platforms, are known to impair cognitive processes and influence consumers’ decision-making by increasing perceived product value and purchase intention. Another feature present on e-commerce platforms are online consumer reviews (OCRs) which have become one of the most important information sources on e-commerce platforms in the last two decades. Nevertheless, little is known about how the presence of scarcity cues affects consumers’ processing of textual review information. Consequently, it is unclear whether OCRs can counteract the effects of scarcity or whether OCRs are neglected due to scarcity cues. To address this gap, this study examines the effects of limited-quantity scarcity cues on online purchase decisions when participants have the possibility to evaluate textual review information. The results of the experimental study indicate that scarcity lowers participants’ processing of textual review information. This in turn increases perceived product value and has considerable negative consequences for the final purchase decision if the scarcity cue is displayed next to a low-quality product. The study’s findings provide relevant insights and implications for e-commerce platforms and policymakers alike. In particular, it highlights that e-commerce platforms can easily (ab)use scarcity cues to reduce consumers’ processing of textual review information in order to increase the demand for low-quality products. Consequently, policymakers should be aware of this mechanism and consider potential countermeasures to protect consumers.
- ZeitschriftenartikelDecision Support for IT Investment Projects(Business & Information Systems Engineering: Vol. 58, No. 6, 2016) Müller, Marcel Philipp; Stöckl, Sebastian; Zimmermann, Steffen; Heinrich, BerndManagerial flexibilities have to be taken into account in ex-ante decision-making on IT investment projects (ITIPs). In many papers of the IS literature, standard financial option pricing models are used to value such managerial flexibilities. Based on a review of the related literature, the paper critically discusses the assumptions of the most frequently used financial option pricing model, namely the Black–Scholes model, arguing for relaxed assumptions that better represent the characteristics of ITIPs. The authors find that existing real option analysis approaches featured in the IS, Finance, and Economics literature are unable to consider more than two of our relaxed assumptions. Consequently, they present their own approach in form of a simulation model for the valuation of real options in ITIPs which offers a better representation of the characteristics of ITIPs by taking the discounted cash-flows and the runtime to be uncertain as well as the market to be incomplete. Based on these modifications of the Black–Scholes model’s assumptions, it is found that the resulting option value contains idiosyncratic risk that has to be taken into account in ITIP decision making. For the realistic case of risk averse decision makers, the consideration of idiosyncratic risk usually leads to a lower risk-adjusted option value, compared to one calculated by means of the Black–Scholes model. This confirms the perception of managers who feel that financial option pricing models frequently overvalue ITIPs and hence may induce flawed investment decisions.
- ZeitschriftenartikelEconomics and Value of IS(Business & Information Systems Engineering: Vol. 57, No. 5, 2015) Han, Kunsoo; Kundisch, Dennis; Weinhardt, Christof; Zimmermann, Steffen
- ZeitschriftenartikelGovernance im IT-Portfoliomanagement – Ein Ansatz zur Berücksichtigung von Strategic Alignment bei der Bewertung von IT(Wirtschaftsinformatik: Vol. 50, No. 5, 2008) Zimmermann, SteffenIn vielen Unternehmen der Dienstleistungsbranche bilden IT-Kosten nach den Personalkosten den zweitgrößten Kostenblock. Auch in anderen Branchen nehmen sie stetig zu. Wenn viele IT-Investitionen die geplanten Ziele nicht erreichen, dann führt dies bei einem steigenden Investitionsvolumen zu einer (noch) höheren „Mittelverschwendung“. Gründe hierfür sind u. a. in einer Fehlallokation von Ressourcen infolge unzureichender Methoden im IT-Portfoliomanagement zu suchen. Um bei der Gestaltung solcher Methoden den aus der IT-Governance abgeleiteten Anforderungen an ein IT-Portfoliomanagement gerecht zu werden, ist dabei neben erwartetem Ertrag und Risiko auch das Strategic Alignment von IT-Investitionen zu berücksichtigen. Vor diesem Hintergrund wird ein Ansatz zur Quantifizierung des Strategic Alignments vorgeschlagen, wonach erläutert wird, wie dieses bei der Auswahl des Portfolios mit dem höchsten Wertbeitrag berücksichtigt werden kann.AbstractIT costs are the second biggest cost component in service industries, topped only by HR costs. They are steadily increasing in other industries as well. At the same time, many IT investments do not achieve their objectives due to inadequate methods in IT assessment implying bad allocation of resources. To meet the requirements of ITPM methods deduced from the main focuses of IT-Governance the consideration of strategic alignment in calculating the value propositions of IT Portfolios is essential. Against this backdrop, an approach to quantify strategic alignment and to consider it in determining the value of an IT Portfolio is presented in this paper.
- ZeitschriftenartikelIntegrierte Ex-ante-Rendite-/Risikobewertung von IT-Investitionen(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Wehrmann, Alexander; Zimmermann, SteffenIn enterprises decisions whether to undertake investments into IT projects or not have to be made regularly. Regarding the fact that two out of three IT projects fail or do not reach their expected value the need for an integrated valuation which addresses returns and connected risks is evident. The impact of development aspects (e.g. the process model used) and project size on the risk-return position of IT projects is demonstrated and it is shown how this can be taken into account when valuing, optimizing and selecting IT investments.
- ZeitschriftenartikelIT-gestützte individualisierte Altersvorsorgeberatung(Wirtschaftsinformatik: Vol. 49, No. 2, 2007) Eberhardt, Michael; Zimmermann, SteffenKernpunkteDie Berücksichtigung persönlicher steuerlicher und sozialversicherungsrechtlicher Effekte erhöht den Individualisierungsgrad in der IT-gestützten Finanzberatung.Die hiermit mögliche qualitative und quantitative Verbesserung des Beratungs-bzw. Vertriebsprozesses beispielsweise im Bereich der Altersvorsorge generiert Wettbewerbsvorteile und erhöht den Kundennutzen.Die IT leistet damit einen Beitrag zur Komplexitätsbewältigung, begünstigt einen einheitlichen, beraterunabhängigen Qualitätsstandard und fördert den Absatz.Die Umsetzung dieses Konzepts in einem Beratungsunterstützungssystem ist ein erster Schritt von der isolierten Liquiditäts-und Performancebetrachtung einzelner Produkte hin zu einer automatisierten ganzheitlichen privaten Finanzplanung.AbstractThe paper outlines, how financial service providers can generate competitive advantages through innovative IT-support for their financial advisory processes. Therefore a generic concept for individualised financial advisory processes is enhanced by the consideration of tax and social contribution effects. This concept is operationalised for the important field of private retirement planning. Thus IT-support for the process of individualised advice is essential because of its high complexity and enables an individualised optimisation of customers’ portfolios. In cooperation with a German financial service provider this concept is already successfully implemented in a first release and will be extended and improved in the future.
- ZeitschriftenartikelIT-Portfoliomanagement – Ein Konzept zur Bewertung und Gestaltung von IT(Informatik-Spektrum: Vol. 31, No. 5, 2008) Zimmermann, SteffenBei zunehmenden Investitionsausgaben für IT ist die aktuelle Situation, dass ca. 70% der IT-Investitionen die geplanten Ziele nicht erreichen, kaum tragbar. Dieser Zustand resultiert u. a. aus einer Fehlallokation von Ressourcen infolge unzureichender Methoden in der IT-Bewertung. Deshalb stellt sich die Frage, welche Anforderungen geeignete Methoden des IT-Portfoliomanagements zu erfüllen haben und welche IT-spezifischen Gestaltungsspielräume dabei zu berücksichtigen sind, um eine effiziente Ressourcenallokation zu gewährleisten.
- ZeitschriftenartikelWI – Call for Papers Heft 5/2015(Wirtschaftsinformatik: Vol. 56, No. 3, 2014) Han, Kunsoo; Kundisch, Dennis; Weinhardt, Christof; Zimmermann, Steffen