Mirror symmetry opposes splitting of chromatically homogeneous surfaces

Chromatically homogeneous surfaces can be seen as single figures but also as two or more overlapping figures. Local factors such as relatability have been proposed in order to explain perception of two or more figures (Kellman and Shipley, 1991 Cognitive Psychology 23 141-221). However, even when these factors are at work, there are conditions favouring the perception of a single figure, which have not been explored so far. Here we propose that one such factor is the mirror symmetry of the surface. Three experiments were designed to test: (a) the main hypothesis, that mirror symmetry enhances perception of a single figure; (b) the role of orientation; (c) the effect of the number of axes of symmetry. The results show that (i) there is a good general correlation between mirror symmetry and perception of a single figure; (ii) vertical and horizontal axes of symmetry are the most effective; and (iii) the more axes of symmetry a surface has, the more likely is the perception of a single figure. These results suggest that mirror symmetry is an important factor in the perception of chromatically homogeneous displays. Some explanations are discussed, particularly one based on the rejection-of-coincidence principle [Rock, 1983 The Logic of Perception (Cambridge, MA: MIT Press)], and a version of the minimum principle in which the strength of the global solution depends on symmetry, whereas the strength of the splitting solution depends on the strength of local factors. In brief, global and local factors compete in determining the perceptual outcome in chromatically homogeneous surfaces.     

Organizational identification as a trigger for personal well-being: Associations with happiness and stress through job outcomes

Recent literature highlights that well-being, happiness, as well as personal stress, has become important for guiding public policy in areas that might involve suboptimal behaviour. Positive life outcomes can extend from one field of life (family, work, sport, children, hobbies, etc.) to another, multiplying success, performance, and health. In the present study, we aimed to verify whether the positive relation between organizational identification and employees' experiences then extends also into a positive association with more general well-being that is unrelated to the work context. For this purpose, we considered two proxies of organizational well-being: job satisfaction (on the positive side) and turnover intention (on the negative side) as well as the distal associations with happiness. The study involved 305 workers who completed a questionnaire made up of five scales: organization identification, job satisfaction, turnover intention, happiness, and personal stress. We found that organizational identification is positively related to employees' job satisfaction and negatively related to their intention to leave. Afterwards, job satisfaction and turnover intention were related to personal stress and happiness, suggesting a positive effect of organizational identification above and beyond the work context.     

Client process in short term dynamic psychotherapy1

In this study, a single case design was used to examine significant client events in a process of short-term dynamic psychotherapy. The Category System of Client Good Moments (Mahrer, 1988) was used as a measure of therapeutic process. Client speaking turns were rated for three sessions (early, middle, and late) of the complete sixteen session treatment conducted according to davanloo's (1978) model of short-term dynamic psychotherapy (STDP), and categories of good moments identified. The results showed that the salient client change-events were related to the client's (a) provision of significant information, (b) exploration of feelings, and (c) insight and understanding across the three sessions. Additionally, the results also showed a statistically significant increase in client-reported behavior change and sense of well-being for the late session. The results suggest that in-session report of behavior change is an important component of therapeutic process. The implications of these results for an atheoretical, data-driven understanding of therapeutic change processes are presented.     

TALK ABOUT FICTION

I present a novel explanation of the apparent truth of certain remarks about fiction, such as an utterance of 'Salieri commissioned the Requiem' during a discussion of the movie Amadeus. I criticize the traditional view, which alleges that the uttered sentence abbreviates the longer sentence 'it is true in the movie Amadeus that Salieri commissioned the Requiem'. I propose a solution which appeals to some independently motivated results concerning the contexts relevant for the semantic evaluation of indexical expressions.     

Iconic storage in the two hemispheres

Three experiments have tested for the existence of laterality effects in iconic storage by employing a Sperling partial-report paradigm and lateralized presentations of alphabetical or pattern material. Even though an overall laterality effect was found in favor of the right visual field for the alphabetical material and in favor of the left visual field for the pattern material, the amount and time decay of partial-report advantage was similar in the two visual fields. These results indicate that hemispheric asymmetries occur beyond the iconic stage of visual information processing.     

Containment Logics: Algebraic Completeness and Axiomatization

Studia Logica - The paper studies the containment companion (or, right variable inclusion companion) of a logic $$\vdash $$ . This consists of the consequence relation $$\vdash ^{r}$$ which...