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Dive into the research topics where Tim Straub is active.

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Featured researches published by Tim Straub.


web intelligence | 2015

How (not) to Incent Crowd Workers - Payment Schemes and Feedback in Crowdsourcing

Tim Straub; Henner Gimpel; Florian Teschner; Christof Weinhardt

Crowdsourcing gains momentum: In digital work places such as Amazon Mechanical Turk, oDesk, Clickworker, 99designs, or InnoCentive it is easy to distribute human work to hundreds or thousands of freelancers. In these crowdsourcing settings, one challenge is to properly incent worker effort to create value. Common incentive schemes are piece rate payments and rank-order tournaments among workers. Tournaments might or might not disclose a worker’s current competitive position via a leaderboard. Following an exploratory approach, we derive a model on worker performance in rank-order tournaments and present a series of real effort studies using experimental techniques on an online labor market to test the model and to compare dyadic tournaments to piece rate payments. Data suggests that on average dyadic tournaments do not improve performance compared to a simple piece rate for simple and short crowdsourcing tasks. Furthermore, giving feedback on the competitive position in such tournaments tends to be negatively related to workers’ performance. This relation is partially mediated by task completion and moderated by the provision of feedback: When playing against strong competitors, feedback is associated with workers quitting the task altogether and, thus, showing lower performance. When the competitors are weak, workers tend to complete the task but with reduced effort. Overall, individual piece rate payments are most simple to communicate and implement while incenting performance is on par with more complex dyadic tournaments.


Journal of Technology Management & Innovation | 2013

Customer Integration in Service Innovation: An Exploratory Study

Tim Straub; Marc Kohler; Peter Hottum; Volker Arrass; Dennis Welter

Prominent industry projects, as well as an extensive literature suggest the importance of customer integration for companies’ innovation success. This appears to be especially true for service firms, which inherently build on customer interaction. Despite this appreciation of the approach, there are comparably few empirical analyses of the positive and negative effects of customer integration. In this exploratory study, we build on established customer role concepts to study the status quo of customer integration in industry, as well as reservations against the roles and negative experiences from customer integration projects. The study reveals a gap between reservations and actual negative experiences in losing know-how, as well as a positive effect of experience in customer integration on perceived benefits for the company.


Designing the Digital Transformation : 12th International Conference, DESRIST 2017, Karlsruhe, Germany, May 30 - June 1, 2017. Ed.: A. Mädche | 2017

Designing a Crowd Forecasting Tool to Combine Prediction Markets and Real-Time Delphi

Simon Kloker; Tim Straub; Christof Weinhardt

The FAZ.NET-Orakel is a crowd forecasting tool, made available to readers of the German-based Frankfurter Allgemeine Zeitung. Its main component is a prediction market used for forecasting economic indices as well as current political events. A shortcoming of prediction markets is their inability to exchange qualitative information. Therefore, we elaborate the combination of prediction markets with the Real-time Delphi method. We argue that several synergy effects may be achieved by this approach: First, prediction markets can be used to select experts for the Delphi survey. Second, valuable information and debates, which may be of interest, can be collected qualitatively. Third, the gamified approach of the prediction markets can raise commitment to the survey.


Fundamentals of Service Systems. Ed.: J. Cardoso | 2015

Service Co-creation

Johannes Kunze von Bischhoffshausen; Peter Hottum; Tim Straub

This chapter provides an overview on different aspects of co-creation in a service context. The first section introduces the concept of value co-creation in service systems and elaborates on the relationship of co-creation to service value propositions, service encounters, service quality, and service productivity. Furthermore, it introduces the concept of customer relationships, as well as concepts and methods that can be applied in order to manage these relationships for co-creation with customers. The third section elaborates on the different roles a customer can play within service co-creation, and its managerial implications.


european conference on information systems | 2014

FEEDBACK AND PERFORMANCE IN CROWD WORK: A REAL EFFORT EXPERIMENT

Tim Straub; Henner Gimpel; Florian Teschner; Christof Weinhardt


hawaii international conference on system sciences | 2016

Risk Taking in Online Crowdsourcing Tournaments

Tim Straub; Timm Teubner; Christof Weinhardt


Collective Intelligence 2014 : Proceedings, Cambridge, Massachusetts/USA, June 10-12, 2014 | 2014

The Negative Effect of Feedback on Performance in Crowd Labor Tournaments

Tim Straub; Henner Gimpel; Florian Teschner


european conference on information systems | 2018

The Effect of Social Reputation on Retention: Designing a Social Real-Time Delphi Platform [in press]

Simon Kloker; Tim Straub; Stefan Morana; Christof Weinhardt


Designing for a digital and globalized world. 13th International Conference, DESRIST 2018, Chennai, IND, June 3-6, 2018. Ed.: S. Chatterjee | 2018

Fraud and Manipulation Prevention in Prediction Markets

Simon Kloker; Tim Straub; Stefan Morana; Christof Weinhardt


Proceedings of the Second KSS Research Workshop : Karlsruhe, Germany, February 2016. Ed.: P. Hottum | 2017

Shouldn’t Collaboration be social? - Proposal of a social Real Time Delphi

Simon Kloker; Tobias T. Kranz; Tim Straub; Christof Weinhardt

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Christof Weinhardt

Karlsruhe Institute of Technology

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Simon Kloker

Karlsruhe Institute of Technology

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Florian Teschner

Karlsruhe Institute of Technology

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Tobias T. Kranz

Karlsruhe Institute of Technology

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Peter Hottum

Karlsruhe Institute of Technology

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Stefan Morana

Karlsruhe Institute of Technology

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Christopher Lisson

Karlsruhe Institute of Technology

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Claudia Niemeyer

Karlsruhe Institute of Technology

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Dennis Welter

Karlsruhe Institute of Technology

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