• Digital Divides in Political Participation: The Mediating Role of Social Media Self-Efficacy and Privacy Concerns 

      Hoffmann, Christian Pieter; Lutz, Christoph (Journal article; Peer reviewed, 2019)
      Scholarship on political participation and the Internet has found that Internet use may foster both online and offline political participation, while also finding pronounced inequalities in online political participation ...
    • European Perspectives on Participation in the Sharing Economy 

      Andreotti, Alberta; Anselmi, Guido; Eichhorn, Thomas; Hoffmann, Christian Pieter; Jürss, Sebastian; Micheli, Marina (Research report, 2017)
      Recent analyses have indicated a rising share of Europeans participating in the sharing economy (Eurobarometer, 2016). However, few studies have delved deeply into the distinctions between those participating in the sharing ...
    • Online serendipity: A contextual differentiation of antecedents and outcomes 

      Lutz, Christoph; Hoffmann, Christian Pieter; Meckel, Miriam (Journal article; Peer reviewed, 2017)
      Critics worry that algorithmic filtering could lead to overly polished, homogeneous web experiences. “Serendipity,” in turn, has been touted as an antidote. Yet, the desirability of serendipity could vary by context, as ...
    • Participation in the Sharing Economy 

      Andreotti, Alberta; Anselmi, Guido; Eichhorn, Thomas; Hoffmann, Christian Pieter; Micheli, Marina (Research report, 2017)
      Literature review
    • Privacy cynicism: A new approach to the privacy paradox 

      Hoffmann, Christian Pieter; Lutz, Christoph; Ranzini, Giulia (Journal article; Peer reviewed, 2016)
      Privacy concerns among Internet users are consistently found to be high. At the same time, these concerns do not appear to generate a corresponding wave of privacy protection behavior. A number of studies have addressed ...
    • Sharing by Proxy: Invisible Users in the Sharing Economy 

      Newlands, Gemma Elisabeth Marjorie; Lutz, Christoph; Hoffmann, Christian Pieter (Journal article; Peer reviewed, 2018)
      With the future of work increasingly data-driven, platforms automate decisions based on the collection of vast quantities of user data. However, non-users constitute a challenge as they provide little to no data for either ...
    • The Dark Side of Online Participation: Exploring Non-, Passive and Negative Participation 

      Lutz, Christoph; Hoffmann, Christian Pieter (Journal article; Peer reviewed, 2017)
      Studies on the “second-level digital divide” explore the socio-economic antecedents and effects of (a lack of) user participation on the Internet. At the same time, some have criticized a normatively affirmative bias in ...
    • The Privacy Implications of Social Robots: Scoping Review and Expert Interviews 

      Lutz, Christoph; Schöttler, Maren; Hoffmann, Christian Pieter (Peer reviewed; Journal article, 2019)
      In this contribution, we investigate the privacy implications of social robots, as an emerging mobile technology. Drawing on a scoping literature review and expert interviews, we show how social robots come with privacy ...
    • The Role of Privacy Concerns in the Sharing Economy 

      Lutz, Christoph; Hoffmann, Christian Pieter; Bucher, Eliane; Fieseler, Christian (Journal article; Peer reviewed, 2018)
      Internet-mediated sharing is growing quickly. Millions of users around the world share personal services and possessions with others—often complete strangers. Shared goods can amount to substantial financial and immaterial ...
    • Unfairness by Design? The Perceived Fairness of Digital Labor on Crowdworking Platforms 

      Fieseler, Christian; Bucher, Eliane; Hoffmann, Christian Pieter (Journal article; Peer reviewed, 2017)
      Based on a qualitative survey among 203 US workers active on the microwork platform Amazon Mechanical Turk, we analyze potential biases embedded in the institutional setting provided by on-demand crowdworking platforms and ...