Matching illumination of solid objects

The appearance of objects is determined by their surface reflectance and roughness and by the light field. Conversely, human observers might derive properties of the light field from the appearance of objects. The inverse problem has no unique solution, so perceptual interactions between reflectance, roughness, and lightfield are to be expected. In two separate experiments, we tested whether observers are able to match the illumination of spheres under collimated illumination only (matching of illumination direction) and under more or less diffuse illumination (matching of illumination direction and directedness of the beam). We found that observers are quite able to match collimated illumination directions of two rendered Lambertian spheres. Matching of the collimated beam directions of a Lambertian sphere and that of a real object with arbitrary reflectance and roughness properties resulted in similar results for the azimuthal angle, but in higher variance for the polar angle. Translucent objects and a tennis ball were found to be systematic outliers. If the directedness of the beam was also varied, the direction settings showed larger variance for more diffuse illumination. The directedness settings showed an overall quite large variance and, interestingly, interacted with the polar angle settings. We discuss possible photometrical mechanisms behind these effects.     

Shape effects on memory for location

The participants were 40 students who were briefly presented 32 dot locations, one at a time, and attempted to reproduce each location after a short delay. Half of the participants completed the task with the surrounding shapes being a circle, a horizontal ellipse, and a vertical ellipse; for the other half, the surrounding shapes were a square, a triangle, and a pentagon. Elongation of the task field along an axis led to exaggerated bias along that axis, but the pattern of bias was fairly constant across the shapes. The data were modeled by assuming that bias in estimation was due to the weighting of spatial category prototypes. Modeling indicated that shape affected spacing of prototypes, but there was no evidence that it affected the number of prototypes. These results were consistent with use of a viewer-based frame of reference, with prototypes reflecting four spatial quadrants generated by left—right and up—down distinctions from the viewer’s perspective.     

Letters of Recommendation: Controversy and consensus from expert perspectives

Letters of recommendation (LORs) are a widely used selection tool with many issues associated with their use. To address some of these issues, 575 professionals in personnel‐related professions reported their experiences with LORs. We separated items into consensus, polarized, or neither categories. Experts reached consensus that letter inflation is a problem that may never be alleviated and that more weight is placed on letters written by someone the reader knows or from a prestigious institution or organization. Most items were polarized, suggesting substantial controversy in the field regarding LORs. Some items originally polarized reached consensus within profession (academic vs applied). Academic professionals reported using LORs more and placing more weight on their contents than applied professionals. Implications discussed include recommendations for future research and practice, such as the appropriate use of LORs, LOR formats, and training.     

Best Practices for Counselors Who Treat Posttraumatic Stress Disorder

Counselors in settings as diverse as schools, corporations, and community agencies are well aware of the numbers of people in the United States who daily come in contact with stressors that are extreme and potentially traumatic. Automobile accidents, disasters, or encounters with interpersonal violence are ubiquitous. Professional counselors, regardless of their professional identification or the settings in which they work, are very likely providing services to many people who are in distress after traumatic exposures. These counselors would benefit from knowing what other mental health professionals consider to be best practices for preventing and treating posttraumatic stress disorders (PTSDs). The purpose of this article is to summarize for counselors those best practices that have been recently developed and published by a multidisciplinary expert group (E. B. Foa, J. R. T. Davidson, & A. Frances, 1999) in their article “Treatment of Posttraumatic Stress Disorder.”     

Absolute vs Relative Performance Rating Formats: Implications for fairness and organizational justice

The choice of performance rating format may influence employees' fairness perceptions. Participants in two studies, one consisting of 208 participants and the other of 393 participants, evaluated the fairness of common relative and absolute rating formats. The participants in the second study also evaluated the fairness of two rating formats, one absolute and one relative, presented in organizational contexts of varying procedural and distributive justice. Results indicate that not only are absolute formats perceived as more fair than relative formats, but differences in fairness perceptions also occur among relative and absolute formats. Furthermore, it appears that rating format influences procedural justice, especially when outcomes are perceived as fair. Implications for organizations' appraisal practices are discussed.     

Decomposing the construct of ambivalence over emotional expression in a Chinese cultural context

The present study examined the construct of ambivalence over emotional expression proposed by King and Emmons ( 1990 ) in the Chinese context, and identified a factor structure different from those proposed in previous Western studies. The results of this study provided discriminant validity for this newly extracted two-factor structure of ambivalence, viz., Emotional Rumination and Emotional Suppression. Emotional Rumination was significantly predicted by the personality scales of introversion and inferiority, and the belief dimension of fate control, whereas Emotional Suppression was predicted by the personality scales of diversity, face, and harmony, and the belief dimension of social complexity. The different effects of Emotional Rumination and Emotional Suppression in predicting life satisfaction showed that emotional experience has its own specific characteristics in Chinese culture, and that responding to its emic characteristics will yield a more culturally responsive understanding of emotional experience and expression. Copyright © 2004 John Wiley & Sons, Ltd.     

The Life Reflection and Consequences of Older Adults' Relationships: An Empirical Study

Fifty‐eight Austrian adults, ages 65 to 99 years, participated in semistructured life reflections regarding their relationships with life partners, children, relatives, and friends. This study identified the consequences of the reflections, the implementation of the consequences, and the degree to which participants were satisfied with the life changes they made.