This case study investigated how to evaluate users’ experiences with physical products with a small sample size in a reliable way and how to provide actionable insights for future decisions about design and practice. Through an improving case study performed in collaboration with ASSA ABLOY, a global leader in access solutions, this study specifically focused on interactions with locks. Three major activities were performed and used to investigate how to conduct usability tests with a small sample size and to explore possible measures that can help increase reliability. Altogether 13 participants participated in this case study through two sets of tests and one final workshop. These activities had the purpose to investigate, to suggest and to evaluate how to best capture users’ experiences with locks using Single-Ease Question, Nasa Task Load Index instrument and Product Reaction Cards. The results showed that there are many different measures to apply to increase reliability in test design whilst using a small sample size, for example to mix methods and to counterbalance, both metrics and tasks, to both deepen the understanding of the experiences and to decrease the risks of possible biases. Further results also showed that qualitative and quantitative methods provide different insights about user’s experiences with respect to detailed and general knowledge respectively. It also showed that a combination of the two provides deeper insights than what one method provides alone and that they help validate individual findings.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:liu-176671 |
| Date | January 2021 |
| Creators | Jaeger Tronde, Emma |
| Publisher | Linköpings universitet, Institutionen för datavetenskap |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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