Forschungsmethoden und Evaluation

Bortz, Jürgen; Döring, Nicola

doi:10.1007/978-3-662-07299-8

Cited by 460 publications

(157 citation statements)

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“…PBC items were aggregated to a mean index, with Cronbach's α = .53. While this does not meet common standards of α > .70, short scales consisting of few items are generally impaired by weaker measurement reliability (Bortz & Döring, 2006). According to the response scale, higher rankings indicate a lower level of PBC.…”

Section: Contextual Factorsmentioning

confidence: 85%

Disentangling household and individual actors in explaining private electricity consumption

Seebauer

Wolf

2016

Energy Efficiency

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Previous research often regard household and individual as synonymous actors, although the overall household electricity consumption is the aggregate of diverging actions by individual household members. We disentangle the impact of actor-specific predictors on household and individual electricity consumption, employing regression models to data of 204 Austrian multi-person households. Predictors add more to the explained variance of household and individual electricity consumption if they are located at the same actor level as the dependent variable. While household electricity consumption is best predicted by the household context and value/knowledge factors, individual electricity consumption depends foremost on habit and whether a person stays at home during the day. The study exemplifies that future research and interventions need to decompose actor levels to better understand and target the drivers of private electricity consumption. Methodological challenges in measuring individual and household consumption behaviour are discussed.

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Section: Contextual Factorsmentioning

confidence: 85%

Disentangling household and individual actors in explaining private electricity consumption

Seebauer

Wolf

2016

Energy Efficiency

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“…In terms of effect sizes, this would be considered large (i.e. an effect size of 0.51, where the effect size f 2 = R 2 /1 -R 2 , and f 2 values of 0.02, 0.15, and 0.35 are considered to indicate small, medium, and large effects, respectively [3]). Even when considering only the medical (5.4%) and psychosocial predictor sets (19.4%, see Table 4), these together explained 24.8% of the variation in the index, which in terms of an effect size (0.33) is also large and comparable with the findings of high quality prospective studies reported in the recent literature (see review in [15]).…”

Section: Discussionmentioning

confidence: 99%

Predictors of multidimensional outcome after spinal surgery

et al. 2006

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“…[20] According to DIN 1319 [21] a measure is a predefined value. However, Bortz and Döring specify measurement as assigning values to an object, which not necessarily have to be physically predefined [22]. Based on this definition sensory studies are a form of measurement where descriptors are quantified.…”

Section: Targets Surface Measurements and Defines Distinctive Values mentioning

confidence: 99%

Correlation of the Haptic Perception and Technical Parameter

Neumann¹,

Schmitt²

2015

17th International Congress of Metrology

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Abstract.A priori knowledge of the customer's perception of a product is a precondition to reduce efforts in product development and therefore diminish costs. This paper presents the results of a study analyzing the correlation between the haptic perception of surfaces and the technical measured parameters using the example of roughness. A methodology has been developed that allows objectifying specific haptic quality characteristics. Important impacts on the perception are the structure and the material of the surfaces. Three experimental studies have been conducted to investigate specific characteristics of haptic perception. The first study examines the different haptic perceptions regarding different geometrical surface structures, assuming that the subjects are able to differentiate geometrical surfaces with different technical parameters. The second experiment studies the perceived haptic relation between two surfaces that have the same technical roughness, but differ in surface structure. The structure types can be differentiated in natural (stochastic, e.g. leather) and in artificial (geometrical) surfaces. The third study concerns the hedonic evaluation of previously analyzed natural and geometrical surfaces to identify the preferences of the customer. The presented findings enable the application of the methodology in terms of customer orientated product development. Résumé. A priori la connaissance de la perception du client d'un produit est une condition préalable pour réduire les efforts dans le développement de produits et donc de diminuer les coûts. Cet article présente les résultats d'une étude analysant la corrélation entre la perception haptique des surfaces et les paramètres mesurés techniques utilisant l'exemple de la rugosité. Une méthodologie a été développée qui permet d'objectiver les caractéristiques spécifiques de la qualité haptiques. Des impacts importants sur la perception sont la structure et le matériau des surfaces. Trois études expérimentales ont été réalisées pour étudier les caractéristiques spécifiques de la perception haptique. La première étude examine les différentes perceptions haptiques concernant différentes structures de surface géométriques, en supposant que les sujets sont capables de différencier les surfaces géométriques avec différents paramètres techniques. La deuxième expérience étudie la relation perçue haptique entre deux surfaces qui ont la même rugosité technique, mais qui diffèrent par la structure de surface. Les types de structure peuvent être différenciées en naturel (stochastique, par exemple, cuir) et artificiels (surfaces géométriques). La troisième étude concerne l'évaluation hédonique des surfaces naturelles et géométriques précédemment analysés pour identifier les préférences du client. Les résultats présentés permettent l'application de la méthodologie en termes de client orienté le développement de produits.

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Forschungsmethoden und Evaluation

Cited by 460 publications

References 0 publications

Disentangling household and individual actors in explaining private electricity consumption

Disentangling household and individual actors in explaining private electricity consumption

Predictors of multidimensional outcome after spinal surgery

Correlation of the Haptic Perception and Technical Parameter

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