What-If Analysis on the Evaluation of User Interface Usability

Author(s):  
Saulo Silva ◽  
Mariana Carvalho ◽  
Orlando Belo

While interactive systems have the potential to increase human work performance, those systems are predisposed to usability problems. Different factors might contribute to these problems during the interaction process and as result, the decision-making process might be compromised. This work uses decision support system methods and tools to assist in the analysis of the usability of a university library website, measuring the constructs of effectiveness, efficiency, and learnability. The pilot study involved thirty-five subjects, and after collecting data, a multidimensional view of the data is created and discussed. Later, a What-if analysis is used to investigate the impact of different scenarios on system-use. The work has the potential to assist designers and system administrators at improving their systems.

2015 ◽  
Vol 4 (2) ◽  
pp. 51-66 ◽  
Author(s):  
Yvonne O'Connor ◽  
Ciara Heavin ◽  
John O'Donoghue

The trial and evaluation of mobile health (mHealth) applications in society is necessary to explore the potential use and benefits of the solution post-trial. In recent years, there is a proliferation of mHealth projects developed and tested in the continent of Africa. The complexity of these projects means that there are typically many stakeholders who are integral to the success of the project. Yet, extant research falls short of capturing the motivations and expectations of multiple key stakeholders (i.e. direct and indirect users) in a single study towards participating in mHealth pilots. To address this gap in research a conceptual model is proposed and examined to explore the impact of motivations and expectations on both community health workers' (direct users) and caregivers' (indirect users) decision to participate in mHealth pilot studies. Findings reveal that both motivations and expectations positively impact decision making, i.e. their decision to participate in the study, with no significant differences emerging between these two groups of stakeholders.


2021 ◽  
Vol 58 (1) ◽  
pp. 2515-2531
Author(s):  
Uttam Sahay, Dr. Gagandeep Kaur

Among themost efficient employee related management practices identified in both the developed and the developing nations is performance appraisal system, which is alsorecognized as a strong motivator for employees. It also enables smooth functioning of managerial decision making, administrative decision making and the employee development. The present study reviews prominent and key studies conducted in recent past systematically in order to assess how organizational performance appraisal systems and competency management frameworks affect employees’ work performance in the telecomsector.


2018 ◽  
Vol 11 (4) ◽  
pp. 79-93
Author(s):  
A.N. Lebedev

The problem of decision-making in the situation of choice among equivalent alternatives is considered in the article. This problem is relevant for behavioral and cognitive Sciences, as well as for practice. At present, it does not have an unambiguous solution. For the first time the problem has been formulated in philosophy and described by the famous parable of Buridan’s donkey. In experimental psychology, the complexity of the problem was shown in the experiment of Nisbett R.T. and Wilson T.D., who offered the subjects to choice one from four identical goods in the supermarket. It has been shown that this choice is not accidental. Most buyers prefer a product that lies fourth on the storefront but do not realize it. The researchers concluded that in a situation of equal choice, the factor of place of goods on display is significant. The proposed article refers to a pilot study of the impact of different ways of presenting subjects with equivalent alternatives to choose from. Three groups of subjects were asked to make a choice in three different situations: to randomly select and cross out one cell in the rows of the figure in the form of a ladder and a pyramid (from 2 to 20). The third group was offered a situation of “distribution of 11 financial funds between 12 unfamiliar managers” sitting at a round table. The study showed that in the first two cases there is a tendency to choose alternatives that are at the center of the proposed figures. In the third case, there is a tendency to “allocate funds in the form of a clock face”. However, many subjects seem to apply some of their strategies of choice and are not aware of them. In practice, such choice is going to be irrational and often unpredictable.


1992 ◽  
Vol 6 (3) ◽  
pp. 187-206 ◽  
Author(s):  
William H. Parsonage ◽  
Frances P. Bernat ◽  
Jacqueline Helfgott

While several states now permit victim participation in the parole process, little research exists concerning the extent, nature, and consequences of such involvement. During Fall 1991, the authors examined a random sample of 1989 parole cases decided by the Pennsylvania Board of Probation and Parole in which victim testimony was proferred (experimental group), and a random sample of cases in which such testimony was not presented (comparison group). Decisional outcomes were compared between the experimental and comparison groups to determine the impact of victim testimony on the parole decisionmaking process in Pennsylvania. A significant difference was found between the groups—higher refusal rates were found in the victim testimony group despite comparable parole objective guidelines predictions, offender demographics, and offenses.


SIMULATION ◽  
1989 ◽  
Vol 53 (4) ◽  
pp. 153-158 ◽  
Author(s):  
Monica A. Henz Luehrmann ◽  
Donald L. Byrkett

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