RT Dissertation/Thesis T1 Individual information systems : design, use, and a negative outcome in the business and private domain A1 Lanzl,Julia WP 2021/11/30 AB Digitalization increasingly changes individuals’ business and private lives. Today, individuals build and use ever more complex individual information systems (IIS) composed of privately-owned and business-owned components. The COVID-19 pandemic has accelerated this development since individuals were forced to work from home due to the social distancing measures associated with the pandemic. The ongoing digitalization comes with great opportunities for individuals, such as higher mobility and flexibility, as well as for organizations, such as lower costs and increased productivity. However, the increased use of IIS at the workplace also bears risks for individuals. Such risks include technostress, which refers to stress that is caused by digital technologies. Technostress, in turn, can lead to health-related issues, reduced productivity, and higher turnover intentions. Thus, to leverage the positive opportunities of digitalization while reducing its associated risk of technostress, a better understanding of IIS, their use, and its effect on technostress, and of individual resources that may affect this relationship is needed. The aim of this dissertation is threefold: First, to contribute to a better understanding of layers of IIS and their different components. Second, since a negative outcome of IIS use can be technostress, this dissertation seeks to advance knowledge on technostress creators and how they can be influenced by IIS use and by various IIS characteristics. Third, this dissertation aims to reveal which resources of individuals may help mitigate technostress. This dissertation uses quantitative methods, such as online surveys and structural equation modeling, and qualitative methods, such as literature analyses and semi-structured interviews. Thereby, the methodological focus lies on quantitative data collection and analysis, while some papers use a mixed-methods approach as a combination of quantitative and qualitative methods. Chapter 2 of this dissertation aims at providing a better understanding of IIS by investigating its various components. Therefore, Chapter 2.1 conceptualizes four layers of IIS: devices, digital identities, relationships, and information. It also considers that IIS have two more or less integrated subsystems: the business information systems with business-owned components and the private information systems with privately-owned components. An empirical validation supports this conceptualization as well as the definition of integration between the two sub-systems on each of the four layers. Chapter 2.2 studies IT consumerization, which refers to the use of private IIS components in the business domain and applies a risk-benefit consideration. The results imply that benefits of consumerization of IT services, such as better functionalities of a private IT service outweigh risks, such as the threat of sanctions for the use of private IT services. Chapter 3 focuses on technostress as a negative outcome of the increased IIS use. Chapter 3.1 analyzes how IT consumerization is related to the technostress creator unreliability of digital technologies. The results reveal a positive relationship between IT consumerization and unreliability and show that unreliability is perceived higher when the IT portfolio integration and the individual’s computer self-efficacy are low. Chapter 3.2 proceeds with studying characteristics of digital technologies and how these are related to technostress. It presents ten characteristics that are associated with at least one technostress creator. Chapter 3.3 extends the concept of technostress and introduces a framework of twelve different technostress creators, reveals four second-order factors underlying the twelve technostress creators, and brings them into relation with work- and health-related effects. Chapter 4 also deals with technostress and investigates resources to mitigate technostress. Chapter 4.1 focuses on organizational measures and finds different relationships of the investigated measures with different technostress creators. While some of the technostress creators can be inhibited by the implementation of organizational measures, others are found to be even intensified by the organizational measures. Chapter 4.2 focuses on social mechanisms that function as technostress inhibitors. Findings differ between technostress creators and the investigated social support dimensions. Furthermore, the results highlight the fact that some of the social support dimensions gain even greater importance in light of increasing telework. In summary, this dissertation provides new insights into IIS and their use, the emergence of technostress in digitalized workplaces, and organizational as well as social mechanisms that help mitigate technostress. Hence, this dissertation supports current efforts in both research and practice to reduce technostress while leveraging the positive opportunities of workplace digitalization. K1 Digitalisierung K1 Individuum K1 Informationssystem K1 Stress PP Hohenheim PB Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim UL http://opus.uni-hohenheim.de/volltexte/2021/1963