Heimrich Kanis

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Prospective users of a new design in the area of everyday products offer innumerable opportunities for measurement and observation, in view of both the diversity in user populations and the freedom of where and how to use a product. In this paper, the relevance of human data is assessed for their impact in meeting functional imperatives in a design. On the(More)
This paper focuses on the analysis of deviation in findings within ergonomics/human factors (E/HF) research. The current terms used to address the analysis of deviation in empirical research revolve around the notion of validity. In E/HF research papers, 'validity' is widely interpreted and includes its common parlance usage. More importantly, analysis(More)
In the literature, at least two distinct connotations of risk can be found: so called objective risk, defined as the ratio of a particular number of accidents and a measure of exposure, and subjective risk, defined as the perception and awareness of risks by the person(s) involved. This article explores the significance of risk perception and awareness in(More)
The number of usability problems discovered in a user trial or identified in a heuristic evaluation can never be claimed to be exhaustive. This raises the question of how many usability problems remained undetected. In ergonomics/human factors research this subject matter is often addressed by asking how many participants are sufficient to discover a(More)
This paper addresses two observational studies, of the use of a blender and a chip pan, and a study of the accident statistics regarding these two types of products. The aim is to understand risk in product use and the process of risk perception as displayed by product users. Consideration is given to the way information from both observational studies and(More)
The analysis of measurement variation in Ergonomics/Human Factors research reflects different approaches such as those prevalent in either the technical sciences or in the social sciences. The distinction is often a consequence of different types of measuring, for example measuring 'at' human beings as opposed to measuring 'through' human beings. In(More)