Abstract
Experimental methods have been under criticism since the advent of mobile and ubiquitous technologies, due to clear limitations in their suitability for studies in the field. However, the laboratory paradigm cannot be directly transferred to field conditions because of its strict notions of experimentation. This chapter examines the theory of quasi-experimentation as an alternative conceptualization of causality, control, and validity. Several threats to experimental validity in field experiments in HCI are discussed. These concerns must be addressed at all levels of experimentation, from the design and execution of a field experiment to analysis of data. Noteworthy also are new technical solutions that have enabled high-fidelity data collection and that generally support endeavors in ensuring validity. If field experimentation is to become the de facto standard of research in human–computer interaction, the methodological core and technical tools must be developed in concert.
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Notes
- 1.
In our studies, mirroring statistics gathered in Finland, only 45–75% (average by subject, 15 subjects, 3,969 total call attempts) of calls reached the intended receiver (Oulasvirta, Petit, Raento, & Tiitta, 2007).
- 2.
This section is partly based on the manuscript Raento, M., Oulasvirta, A, & Eagle, N. (in press).
- 3.
The study reported here has been designed and conducted with Sara Estlander and Antti Nurminen (Oulasvirta, Estlander, & Nurminen, in press).
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Acknowledgments
The author wishes to express gratitude to all collaborators, particularly Mika Raento, Sara Estlander, and Tuomo Nyyssönen. Parts of the text on background logging are based on an manuscript written with Mika Raento and Nathan Eagle. This research has been funded jointly by the FP6 EU project PASION (FP6-2004-IST-4-27654) and the Academy of Finland project ContextCues. The camera system described in Fig. 5 has been developed in the PASION project.
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Oulasvirta, A. (2009). Field Experiments in HCI: Promises and Challenges. In: Isomäki, H., Saariluoma, P. (eds) Future Interaction Design II. Springer, London. https://doi.org/10.1007/978-1-84800-385-9_5
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