Increasing stimulus intensity does not affect sensorimotor synchronization

When people synchronize taps with isochronously presented stimuli, taps usually precede the pacing stimuli [negative mean asynchrony (NMA)]. One explanation of NMA [sensory accumulation model (SAM), Aschersleben in Brain Cogn 48:66–79, 2002] is that more time is needed to generate a central code for kinesthetic-tactile information than for auditory or visual stimuli. The SAM predicts that raising the intensity of the pacing stimuli shortens the time for their sensory accumulation, thereby increasing NMA. This prediction was tested by asking participants to synchronize finger force pulses with target isochronous stimuli with various intensities. In addition, participants performed a simple reaction-time task, for comparison. Higher intensity led to shorter reaction times. However, intensity manipulation did not affect NMA in the synchronization task. This finding is not consistent with the predictions based on the SAM. Discrepancies in sensitivity to stimulus intensity between sensorimotor synchronization and reaction-time tasks point to the involvement of different timing mechanisms in these two tasks.     

Reconsidering research on self-humanizing: The importance of mean comparative judgments

Self-humanization is defined as the tendency to view oneself as more essentially human than others. Researchers have claimed that people attribute human nature traits more strongly to themselves than to others, but not uniquely human traits. In this article we suggest that such claims are based on the misinterpretation of results. Most studies have not presented mean comparative judgments, making it impossible to determine whether people thought they possessed characteristics less strongly or more strongly than the average person. We found that people (N = 256) in Poland, Italy, and Korea perceived themselves as possessing desirable human nature and uniquely human characteristics more than others, as possessing undesirable uniquely human traits less than others, and as similar to others in terms of undesirable human nature characteristics. It seems that being more human than others means possessing some traits more than others and possessing some traits less than others.     

Frontal EEG alpha band asymmetry as a predictor of reasoning deficiency in depressed people

Cognitive deficits in depression are mostly apparent in executive functions, especially when integration of information and reasoning is required. In parallel, there are also numerous studies pointing to the frontal alpha band asymmetry as a psychophysiological marker of depression. In this study, we explored the role of frontal alpha asymmetry as a potential factor explaining the cognitive problems accompanying depression. Twenty-six depressed and 26 control participants completed a reasoning task and underwent 5 minutes of electroencephalography recording. In line with the previous studies, depressed people showed difficulties with reasoning but we did not observe the relationship between frontal asymmetry in the alpha band and depression. However, we found that in the depressed group the frontal alpha asymmetry index was characterised by larger variance than in the control group, and it was also a strong predictor of cognitive functioning exclusively in the depressed group. Our results point to the disruption of a psychophysiological balance, reflected in changed frontal alpha asymmetry (into more left-sided frontal asymmetry in the alpha band, reflecting more right-sided cortical activity) as a possible brain correlate of cognitive disturbances present in depressive disorders.     

Reopening the study of extreme social behaviors: Obedience to authority within an immersive video environment

In this study, we used a paradigm similar to the one used by Milgram in his classic obedience study, using an immersive video environment. We manipulated the victim's degree of visibility and his ethnicity. When the victim was hidden, the level of obedience we obtained was similar to Milgram's. Replicating previous findings observed in real environments, participants were more obedient when the victim was hidden than when he was visible, and the more obedient participants negated their own responsibility by projecting responsibility on both the victim and the experimenter. State‐anger and right‐wing authoritarianism (RWA) emerged as two significant predictors of the level of obedience. Illustrating an underlying process of racial‐dehumanization, participants reported less anxiety and distress when the victim was a North African than when the victim was of the same racial origin as the participant. These results underscore the usefulness of using immersive environments when studying extreme social behaviors. Copyright © 2009 John Wiley & Sons, Ltd.     

The individual and nothingness (Stavrogin: a Russian interpretation)

This study is an attempt to reconstruct and sum up philosophical interpretations of Stavrogin, the main hero of the classic Dostoevsky’s novel “The Devils”, given by the outstanding Russian religious thinkers in the twentieth century. The author emphasizes that, however different can be their philosophical premises, the discussed interpretations of Dostoevsky’s hero are compatible and complementary. Confronting and, above all, synthesizing different points of view, he tries to grasp the basic historiosophical, anthropological and religious ideas of Russian renaissance.     

Ordinary life and the tragedy of solidarity

In his texts, Józef Tischner (1930–2000) referred to significant problems characteristic of the end of the communist regime and the first years of the liberal-democratic system in Poland. He tried to understand, among other things, the sources of Polish society’s disappointment with their regained political and economic freedom. This article discusses the late period of Tischner’s life and work, when his philosophy was heavily influenced by the ideas of Charles Taylor. On the one hand, the author analyzes Tischner’s attitude toward the concept of ordinary life, while on the other, Tischner’s understanding of solidarity combined with the concept of the spirit of capitalism. The article shows numerous similarities and significant differences between the way of thinking of both philosophers. The former concern above all the consentaneous assessment of the disappearance of heroism in liberal-democratic societies, while the latter concern the discrepancies in the assessment of the possibility of fully implementing the idea of solidarity in these societies.

     

Do attentional capacities and processing speed mediate the effect of age on executive functioning?

The executive processes are well known to decline with age, and similar data also exists for attentional capacities and processing speed. Therefore, we investigated whether these two last nonexecutive variables would mediate the effect of age on executive functions (inhibition, shifting, updating, and dual-task coordination). We administered a large battery of executive, attentional and processing speed tasks to 104 young and 71 older people, and we performed mediation analyses with variables showing a significant age effect. All executive and processing speed measures showed age-related effects while only the visual scanning task performance (selective attention) was explained by age when controlled for gender and educational level. Regarding mediation analyses, visual scanning partially mediated the age effect on updating while processing speed partially mediated the age effect on shifting, updating and dual-task coordination. In a more exploratory way, inhibition was also found to partially mediate the effect of age on the three other executive functions. Attention did not greatly influence executive functioning in aging while, in agreement with the literature, processing speed seems to be a major mediator of the age effect on these processes. Interestingly, the global pattern of results seems also to indicate an influence of inhibition but further studies are needed to confirm the role of that variable as a mediator and its relative importance by comparison with processing speed.     

Attention to negative words predicts daily rumination among people with clinical depression: evidence from an eye tracking and daily diary study

The present study examined relationships between attention to negative words and daily rumination and daily adjustment in a sample of clinically depressed individuals. We recorded eye movements of 43 individuals diagnosed with major depression while they were freely viewing dysphoric, threat-related, neutral, and positive words. Then, each day for one week, participants provided measures of their daily rumination and psychological adjustment. Multilevel analyses found that attention to dysphoric and threat-related words was positively related to daily rumination and attention to threat-related words was negatively related to daily adjustment. These findings suggest that the impaired ability to disengage from negative words is positively related to rumination in daily life and is negatively related to well-being, as defined in terms of Beck’s Triad.     

Windows executable software for the progressive demasking task

The progressive demasking (PDM) task is a perceptual identification task using degraded stimulus presentation procedures, but with the advantage of providing response time (RT) measures on each trial. Participants simply press a response button whenever they recognize a word. In this article, we present newly developed, easy-to-use freeware for PDM. Considering the difficulty of programming such a paradigm with standard experimental software, we developed a program based on high-level C libraries to be executed on Windows XP computers. The program execution is millisecond accurate forRT measurements and generates the fewest possible display duration errors.