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Usability is increasingly recognized as an important quality factor for interactive software systems, including traditional GUIs-style applications, Web sites, and the large variety of mobile and PDA interactive services. Unusable user interfaces are probably the single largest reasons why encompassing interactive systems – computers plus people, fail in(More)
While researchers usually are concerned about psychometric properties of psychological tests estimated using large samples, most clinical decision-makers must evaluate the accuracy of test results for individuals. This is particularly true as regards tests that have cutting scores to determine, for example, whether to assign a particular diagnosis or accept(More)
Evidence shows that integrated development environments (IDEs) are too often functionality-oriented, complex and difficult to use, learn, and master. This article describes challenges in the design of usable IDEs and in the evaluation of the usability of such tools. It presents the results of three different empirical studies of IDE usability. Different(More)
Latent variable path analysis (LVPA) is undoubtedly one of "the" new statistical techniques being used increasingly often by clinical researchers. Although well suited for some types of clinical research, LVPA can be a somewhat intimidating technique for novices. This work is intended to provide a non-mathematical introduction to the advantages and problems(More)
Usability is increasingly recognized as an important quality factor for interactive software systems, including traditional GUIs-style applications, Web sites, and the large variety of mobile and PDA interactive services. Unusable user interfaces are probably the single largest reasons why encompassing interactive systems – computers plus people, fail in(More)
This article introduces tools for analyzing path diagrams using graphical methods, which are better known in epidemiology than among researchers in the behavioral sciences, who would be more familiar with traditional structural equation modeling (SEM). We describe graphical tools that locate covariates for adjustment and instrumental variables, both of(More)
Usability is increasingly recognized as an important quality factor for interactive software systems, including traditional desktop applications, Web-based systems, and mobile services. The design of this diversity of applications so that they actually achieve their intended purposes is not an easy task. Although there are many individual methods for(More)
During the past 40 years, the vast majority of students trained in the social sciences have been taught the " received view " of null-hypothesis significance-testing (NHST). Social science researchers following the received review have approached their work with a heavy reliance on statistical tests, which have been strongly identified with probability or "(More)
This chapter supplements the presentations in Kline (2004, chaps. 4, 6-7) about effect size estimation in univariate designs. 1 A basic familiarity with the concepts presented in the source just mentioned and with multivariate methods of data analysis in general is assumed. See Stevens (1992) or Tabachnick and Fidell (2001) for an introduction to(More)
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