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Longitudinal Research in Human-Computer Interaction

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GERKEN, Jens, 2011. Longitudinal Research in Human-Computer Interaction [Dissertation]. Konstanz: University of Konstanz

@phdthesis{Gerken2011Longi-17021, title={Longitudinal Research in Human-Computer Interaction}, year={2011}, author={Gerken, Jens}, address={Konstanz}, school={Universität Konstanz} }

Gerken, Jens terms-of-use The goal of this thesis is to shed more light into an area of empirical research, which has only drawn minor interest in the field of Human-Computer Interaction so far – Longitudinal Research. This is insofar surprising, as Longitudinal Research provides the exceptional advantage compared to cross-sectional research of being able to analyze change processes. Therefore, it incorporates time as a dependent variable into the research design by gathering data from multiple points in time. Change processes are not just an additional research area but are essential to our understanding of the world, with HCI being no exception. Only Longitudinal Research allows us to validate our assumptions over time. For example, a user experience study for an electronic consumer product, such as a TV-set, that reveals how excited people about the device are, should also investigate whether this excitement holds over time, whether usability issues arise after two weeks, and eventually whether people will buy the follow-up product form the same company. Our experience with technology is situated in context, and time is one important aspect of our context – ignoring does not necessarily lead to invalid but often insignificant research.<br /><br />In this thesis, we contribute to the area of Longitudinal Research in HCI in manifold ways. First, we present a taxonomy for Longitudinal Research, which provides a foundation for the development of the field. It may serve both as a basis for discussion and methodological advances as well as a guiding framework for novices who strive to apply Longitudinal Research methods.<br /><br />Second, we provide a practical contribution by presenting PocketBee, a multi-modal diary for longitudinal field research. The tool is based on Android smartphones and allows researchers to conduct remote longitudinal studies in a variety of ways. We embed the discussion of PocketBee in a broader discussion of the diary and experience sampling methods, allowing researchers to understand the context of the tool, the advantages and also the inherent problems.<br />Eventually, we present the Concept Maps method, which tackles a specific is-sue of Longitudinal Research – the difficulty to analyze changes in qualitative data over time, as these are normally hidden in large amounts of data and sub-ject to the interpretation of the researcher. In the context of API usability, the method allows the externalization of the mental model developers generate. Concept Maps are used for these external representations and by continually updating these maps, changes over time become apparent and the analysis replicable.<br /><br />The thesis will also help researchers to discover further important research are-as in this field, as for example the variety of methodological issues that arise with gathering data over time. As the topic of Longitudinal Research has not yet been covered comprehensively in the scientific HCI literature, this thesis provides an important first step. 2011-12-05T08:32:26Z 2011 2011-12-05T08:32:26Z eng Gerken, Jens Longitudinal Research in Human-Computer Interaction

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