In the paper a usual block design with treatment effects fixed and block effects random is considered. To compare experimental design the asymptotic covariance matrix of a robust estimator proposed by Bednarski and Zontek (1996) for simultaneous estimation of shift and scale parameters is used. Asymptotically Aand Doptimal block designs in the class of designs with bounded block sizes are chara...

10.1 GENERAL PRINCIPLES OF EXPERIMENTAL DESIGN .............................. 424 10.1.1 Randomization ................................................................................... 430 10.1.2 Replication and Pseudoreplication ................................................. 431 10.1.3 Design Control .................................................................................. 437 10...

The existing literature acknowledges that a mismatch between the experimenter’s and the subjects’ models of an experimental task can adversely affect the interpretation of data from laboratory experiments. We discuss why the two common experimental designs (between-subjects and within-subjects) used to conduct experiments may fail to sufficiently account for this concern. An alternative design ...

Carter [1] identifies putative conceptual and methodological flaws in a paper from our laboratory on the effects of the social environment on exploration– avoidance behaviour in a cichlid fish [2]. Although we welcome discussion of methodological issues that fosters the use of more solid experimental designs in personality research and we acknowledge that the experimental design used can be fur...

The activation of conceptual metaphors has always been studied one mapping at a time. What happens when various conceptual metaphors are processed at the same time is still unknown. The experimental design used here enabled the activation of three conceptual metaphors at the same time (past-left/future-right, negative-left/positive-right and negativepast/positive-future). Participants had to ma...

Recent results in experimental and personnel economics indicate that women do not like competitive environments as much as men. This article presents an experimental design which gives participants the opportunity to enter a tournament as part of a team rather than alone. While a large and significant gender gap in entry in the individual tournament is found in line with the literature, no gend...

Purpose – Drawing on recent research related to hospital facilities, this paper aims to discuss the role of evidence-based design in facility planning and design as a key element in helping the field of facility planning and management continue to strengthen professional practice. Design/methodology/approach – The discussion draws on relevant literature and recent research. Findings – Evidence-...

The purpose of this study was to explore the impact of Digital storytelling (DST) on the academic achievement, critical thinking, and learning motivation of senior high school students learning English as a foreign language. The one-year study adopted a pretest and posttest quasi-experimental design involving 110 10th grade students in two English classes. The independent variable was informati...

Some branches of phonetics prefer experiments that feature a large number of repetitions and only few unique items. This paper discusses this relatively common experiment design choice, arguing that repetitions do not always help for drawing sound conclusions from phonetic data. It is recommended that phonetic experiments should be designed with less repetitions and more distinct items.

In this paper, a simulation study is carried out to identify potential improvements in the management of a nonautomated distribution warehouse which is located between manufacturers and small retailers. The simulation model has been used to obtain valuable knowledge of the operational characteristics of the warehouse. We aim at understanding the effect of an automatic storage upon the occupied ...