Converting between measures of slope of the psychometric function

The psychometric function’s slope provides information about the reliability of psychophysical threshold estimates. Furthermore, knowing the slope allows one to compare, across studies, thresholds that were obtained at different performance criterion levels. Unfortunately, the empirical validation of psychometric function slope estimates is hindered by the bewildering variety of slope measures that are in use. The present article provides conversion formulas for the most popular cases, including the logistic, Weibull, Quick, cumulative normal, and hyperbolic tangent functions as analytic representations, in both linear and log coordinates and to different log bases, the practical decilog unit, the empirically based interquartile range measure of slope, and slope in a? representation of performance.     

Determinants of Perceived Pay Inequities: The Effects of Comparison Other Characteristics and Pay‐System Communication1

Using an equity theory framework, we hypothesized that performance, seniority, and gender differences in comparison others lead to perceived pay inequities, but that this relationship is moderated by an explanation of the pay system. A policy‐capturing methodology was used. We found that performance and seniority differences are related to perceived pay inequities, but these perceived inequities were less pronounced when the pay system was explained to employees. Interestingly, we did not find any evidence of gender effects in perceived pay inequities. These results are discussed in terms of new developments in integrating procedural‐justice and distributive‐justice domains.     

ELEPHANTS, MICROSCOPES AND FREE BEAUTY: REPLY TO DAVIES

According to Stephen Davies, there is no such thing as free beauty. Using actual and imaginary examples, he tries to show that our aesthetic evaluations of objects inevitably pay heed to the kinds to which they belong or in which we judge them to belong. His examples are not as compelling as he thinks, however. Furthermore, nature looked at through a microscope (or a telescope) provides us with a particular class of counter-examples which have not been dealt with by Davies and which put considerable pressure on his account.     

Introspective forgetting

We model the forgetting of propositional variables in a modal logical context where agents become ignorant and are aware of each others’ or their own resulting ignorance. The resulting logic is sound and complete. It can be compared to variable-forgetting as abstraction from information, wherein agents become unaware of certain variables: by employing elementary results for bisimulation, it follows that beliefs not involving the forgotten atom(s) remain true. The work for this publication was mainly carried out while Hans van Ditmarsch was associated to: Institut de Recherche en Informatique, Université Paul Sabatier, France.     

Musiktherapie bei chronisch-tonalem Tinnitus

Tinnitus therapy according to the Heidelberg model of music therapy integrates psychological strategies in order to manage the perception and approaches to tinnitus aimed at curing the underlying somatic disorder. The specific musical therapeutic interventions as well as the postulated specific effective factors are explained. Several multidisciplinary studies support the effectiveness of this form of therapy. The results indicate that the therapy is highly advantageous in terms of treatment duration, effectiveness, and follow-up stability compared to customary interventions. Furthermore, the results of brain imaging strongly suggest the usefulness of further investigations and discussion in the realm of neuronal modeling of chronic tinnitus.     

A qualitative study on the development of workplace bullying: Towards a three way model

Up to now, researchers have identified various individual and work‐related factors as potential antecedents of workplace bullying. The aim of the present study is to integrate this line of research in view of explaining how these antecedents may develop into workplace bullying. Key informants, such as union representatives, employees with a confidence role concerning workplace bullying, human resource managers, prevention workers and social service employees, analysed bullying incidents or cases within their organization. We combined the various perspectives on the same incident into one plan. Then, all 87 case plans were united in a global model that reflects the development towards bullying. The results suggested three processes that may contribute to the development of bullying. Firstly, bullying may result from inefficient coping with frustration. Such coping mechanisms are likely to be active for perpetrators, and passive for victims. Secondly, bullying may be the consequence of escalated conflicts. Thirdly, bullying may result from destructive team and organizational cultures or habits. Individual and work‐related antecedents may affect these processes in two ways: they may be at the origin of the three processes, and they may relate to the employees' coping style. Implications for theory and research are discussed. Copyright © 2008 John Wiley & Sons, Ltd.