Random dynamics and the research programme of classical mechanics

The modern mathematical theory of dynamical systems proposes a new model of mechanical motion. In this model the deterministic unstable systems can behave in a statistical manner. Both kinds of motion are inseparably connected, they depend on the point of view and researcher's approach to the system. This mathematical fact solves in a new way the old problem of statistical laws in the world which is essentially deterministic. The classical opposition: deterministic‐statistical, disappears in random dynamics. The main thesis of the paper is that the new theory of motion is a revolution in the research programme of classical mechanics. It is the revolution brought about by the development of mathematics.     

Is attention allocation sensitive to word informativeness?

Summary When two words are presented simultaneously, where one of them is predictable from the context and the other one is not, it is conceivable that attention is captured by the expected word (cf. Flowers, Polansky, & Kerl, 1981), or that attention is directed to where it is presumably more needed, namely to the unexpected word. To explore these possibilities we used a paradigm in which the subjects' primary task was to report either one or both of two simultaneously presented words, and attention was measured by performance on a secondary task, that is, detecting small gaps in a letter stroke. In a preliminary test, this measure of attention was found to be sensitive to the manipulation of attention by means of an arrow pointer. Word predictability was manipulated by presenting an incomplete sentence immediately before the two words. The sentence was either semantically congruent with one of the words or with neither of them. The mode of word report (partial vs. full) was manipulated between subjects. No difference was found in either mode between the gap detection scores in the expected and the unexpected words. Neither of those scores differed from the score for trials in which both words were unexpected. The results suggest that at the time of selection, or attention allocation, cues about word identity are not yet available, or are not utilized.Most of the work reported here was done as an M.A. thesis of the second author under the supervision of the first and third authors. The research was supported in part by a grant from the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel     

On the Positive Side of Avoidance Motivation: An Increase in Avoidance Motivation Reduces Procrastination among Students

People who procrastinate often pay a heavy price in terms of illness, stress, and poor performance. Because procrastination has harmful consequences, we predicted that avoidance motivation, a self‐regulation system that protects people from harm, would also protect them against procrastination. We hypothesised that avoidance motivation reduces procrastination, despite the known destructive effects avoidance motivation has on thriving. In Study 1, students high in chronic‐avoidance motivation had the lowest dropout rates from a bonus‐granting longitudinal study. In Study 2, avoidance motivation was negatively related to delay in submitting a term paper, when controlling for chronic procrastination, self‐efficacy, impulsiveness, and age. In Study 3, an experimental manipulation of avoidance motivation reduced procrastination three times, but only once significantly. In Study 4, manipulations of both avoidance motivation and approach motivation, relative to a control motivation, using a within‐subjects design, indicated that the avoidance manipulation reduced procrastination in submitting subsequent reading reports, whereas the approach manipulation did not. We subjected all our results to a meta‐analysis that indicated that avoidance motivation had a significant preventive effect on procrastination. We conclude that avoidance motivation can reduce procrastination, and suggest that our avoidance‐manipulation techniques could be applied across a variety of organisational and educational settings.     

Strategic encoding and retrieval processes in verbal recall among middle-aged and older adults

The authors used an analysis of individual differences to examine the role of executive control in strategic encoding and retrieval in verbal recall. Participants enrolled in the Louisiana Healthy Aging Study completed measures of working memory (WM), cognitive status, vocabulary, and free recall of words. Indices of clustering in free recall were calculated to permit inferences on strategic encoding and retrieval processes. We hypothesized that WM would be more strongly associated with strategic encoding and retrieval metrics than vocabulary based on the assumption that successful remembering requires executive control in WM. Regression analyses, together with a variance portioning procedure, confirmed that WM had comparable levels of unique and shared variance with the strategic encoding and retrieval metrics, and both exceeded vocabulary. Theoretical and clinical implications of these data are considered, with the suggestion of future research in lifespan samples as opposed to exclusively young adult or older adult samples.     

Learning from successful and failed experience: the moderating role of kind of after-event review

The claim that appropriate "after-event review (AER)" may increase the relative value of drawing lessons from successes, as compared with failures, was examined in the present study. The study was a laboratory experiment in which the effect of type of AER (failure-focused, success-focused, failure- and success-focused, and no AER review) on performance improvement and causal attributions was tested under conditions of earlier success and earlier failure. In general, 2 results were demonstrated: (a) Drawing lessons from successful experience is feasible, and its effectiveness is contingent upon the type of AER. More specifically, after successful events, the most effective review is that of wrong actions, whereas after failed events, any kind of event review (correct or wrong actions) is effective. (b) AERs elicit more internal (as opposed to external) and specific (as opposed to general) attributions. These 2 classifications moderate the effect of AERs on task performance.     

Skeletal structure of printed words: evidence from the stroop task

Do readers encode the sequencing of consonant (C) and vowel (V) phonemes (skeletal structure) in printed words? The authors used the Stroop task to examine readers' sensitivity to skeletal structure. In Experiment 1, CVC nonwords (e.g., pof) facilitated the naming of colors with congruent frames (e.g., red, a CVC word) but not with incongruent ones (e.g., green). In Experiment 2, the color black (a CCVC frame) was named faster with a congruent CCVC frame (e.g., grof) compared to either CCVCC (e.g., groft) or CVC (e.g., gof) incongruent controls. Finally, in Experiment 3, the color pink (a CVCC frame) was named faster with a CVCC frame (e.g., goft) compared to either CCVCC or CVC incongruent controls. In most cases, congruent frames shared no segments with the color name. These findings demonstrate that readers automatically assemble the skeletal structure of printed words.     

Historical change of suicide seasonality in the canton of zurich, Switzerland

Current research is yielding an increasingly heterogeneous picture of suicide seasonalities: They seem to depend on methods and, moreover, they seem to have smoothed in recent decades. This work examines the latter issue by comparing suicide seasonalities in the canton of Zurich, Switzerland, in the 16 th -18 th centuries, 1901-1920 and 1969-94. The results indicate shifts of peaks and lows on suicide seasonalities over the centuries, with a smoothing of seasonalities toward the 21 th century. The recent period does not show any suicide seasonality at all. The canton of Zurich seems to be ahead of the general trend found in other regions of Switzerland.     

Neuropsychological Differences Between Frontotemporal Dementia and Alzheimer's Disease: A Review

This paper surveys the similarities and differences between frontotemporal dementia (FTD) and Alzheimer's disease (AD). The review covers findings primarily from neuropsychological studies on memory, language, attention/executive function, and visuospatial abilities. However, neuropsychiatric and neuroimaging data are also briefly discussed. Distinguishing features of both FTD and AD are described in order to present a comprehensive clinical picture of these dementing diseases, which is essential for the process of differential diagnosis. The cause of specific cognitive deficits is also considered. Our comprehensive review of the empirical literature reveals that AD is characterized by early memory loss and visuospatial problems, while among the main features of FTD are behavioral abnormalities and executive dysfunctions.     

The social-encoding benefit in face recognition is generalized to other-race faces

Faces are visual stimuli that convey rich social information. Previous experiments found better recognition for faces that were evaluated based on their social traits than on their perceptual features during encoding. Here, we ask whether this social-encoding benefit in face recognition is also found for categories of faces that we have no previous social experience with, such as other-race faces. To answer this question, we first explored whether social and perceptual evaluations for other-race faces are consistent and valid. We then asked whether social evaluations during encoding improve recognition for other-race faces. Results show that social and perceptual evaluations of own- and other-race faces were valid. We also found high agreement in social and perceptual evaluations across individuals from different races. This indicates that evaluations of other-race faces are not random but meaningful. Furthermore, we found that social evaluations facilitated face recognition regardless of race, demonstrating a social-encoding benefit for both own- and other-race faces. Our findings highlight the role of social information in face recognition and show how it can be used to improve recognition of categories of faces that are hard to recognize due to lack of experience with them.     

Self-compassion and social anxiety disorder

Self-compassion refers to having an accepting and caring orientation towards oneself. Although self-compassion has been studied primarily in healthy populations, one particularly compelling clinical context in which to examine self-compassion is social anxiety disorder (SAD). SAD is characterized by high levels of negative self-criticism as well as an abiding concern about others' evaluation of one's performance. In the present study, we tested the hypotheses that: (1) people with SAD would demonstrate less self-compassion than healthy controls (HCs), (2) self-compassion would relate to severity of social anxiety and fear of evaluation among people with SAD, and (3) age would be negatively correlated with self-compassion for people with SAD, but not for HC. As expected, people with SAD reported less self-compassion than HCs on the Self-Compassion Scale and its subscales. Within the SAD group, lesser self-compassion was not generally associated with severity of social anxiety, but it was associated with greater fear of both negative and positive evaluation. Age was negatively correlated with self-compassion for people with SAD, whereas age was positively correlated with self-compassion for HC. These findings suggest that self-compassion may be a particularly important target for assessment and treatment in persons with SAD.