Physiological evidence for response inhibition in choice reaction time tasks

Inhibition is a widely used notion proposed to account for data obtained in choice reaction time (RT) tasks. However, this concept is weakly supported by empirical facts. In this paper, we review a series of experiments using Hoffman reflex, transcranial magnetic stimulation and electroencephalography to study inhibition in choice RT tasks. We provide empirical support for the idea that inhibition does occur during choice RT, and the implications of those findings for various classes of choice RT models are discussed.     

Being the agent: memory for action events

Whoever paid the bill at the restaurant last night, will clearly remember doing it. Independently from the type of action, it is a common experience that being the agent provides a special strength to our memories. Even if it is generally agreed that personal memories (episodic memory) rely on separate neural substrates with respect to general knowledge (semantic memory), little is known on the nature of the link between memory and the sense of agency. In the present paper, we review results from two experiments investigating the effects of agency on both explicit and implicit memory traces. Performance of normal subjects is compared to that of schizophrenic patients in order to explore the role of awareness of action on memory. It is proposed that reliable first-person information is necessary to create a stable and coherent motor memory trace.     

Does training have consequences for the walk-run transition speed?

A number of authors when studying the walk-run transition phenomenon focused either on the mechanical or energy expenditure whilst only a few used both parameters concurrently. Moreover the literature demonstrates that the contribution of these variables changes along with the level and method of training. Consequently the purpose of this study is to find, by analyzing concurrently these two variables, if the walk-run transition speed is linked to the type of training. To this end we calculated two theoretical transition speeds: one based on the metabolic energy expenditure St(1) and the second one based on the internal work St(2). Subjects were divided into three groups (untrained, sprint and endurance-trained men) who were required to walk and run on a treadmill at increasing speeds. Firstly we show that the relationship between St(1) and St(2) differs depending on the groups. Sprinters have a significantly lower St(2) than St(1) whereas the opposite is found for untrained subjects. We also show that the transition speed is linked to the subject's type of training. To conclude it seems that acquiring running techniques through specific training has consequences for the walk-run transition phenomenon.     

Activation of latent self-schemas as a cognitive vulnerability factor for depression: The potential role of implicit self-esteem

To date, only two studies have investigated implicit self-esteem in depressed individuals. Surprisingly, both studies found evidence not in line with the cognitive theory of depression. We wanted to test whether these findings are replicable by investigating implicit self-esteem using the Implicit Association Test in currently depressed (CD), never depressed controls (ND), and formerly depressed individuals (FD). The latter two groups were tested before and after a negative mood induction. The results are in line with the previous two studies suggesting no difference in implicit self-esteem between CD patients and ND controls. Moreover, before mood induction, FD individuals evidenced a higher implicit self-esteem as compared to the two other groups. Compared to ND participants, FD individuals showed a significant drop in implicit self-esteem after the negative mood induction procedure, but this was due to the higher implicit self-esteem of FD before the mood induction. These results are discussed in the light of new perspectives on implicit self-esteem and depression.     

Hand mental rotation is not systematically altered by actual body position: Laterality judgment versus same–different comparison tasks

It is commonly believed that during mental rotation of body parts, participants tend to imagine their own body part moving toward the stimulus, thus using an egocentric strategy. Several studies have also shown that the mental rotation of hands is affected by the actual hand position, especially if the hand is kept in an awkward position. However, this hand posture effect, as well as the use of an egocentric strategy during mental rotation of body parts, is not systematic. Several experiments have demonstrated that manipulating the stimulus features or the paradigm could induce a shift to visual and allocentric strategies. Here, we studied the effects of hand posture and biomechanical constraints on one-hand mental rotation (laterality judgment task), two-hand mental rotation (same–different judgment task), and mental rotation of one or two alphanumeric symbols (control tasks). Effects of posture and biomechanical constraints were observed solely for the laterality judgment task. Response times in the same–different hand mental rotation items were influenced by the angular disparity between the stimuli. We interpreted our result as evidence of the use of different strategies for each task. Future research should focus on disentangling the exact subprocesses in which an egocentric strategy is used, in order to propose better tests for participants with motor impairments.     

Adorno and Schelling: How to ‘Turn Philosophical Thought Towards the Non-Identical’

This paper explores the relationship between Adorno and Schelling. It argues that Adorno resorted to Schellingian motifs (whether he acknowledged them or not, or acknowledged them only partially) to counteract the influence of Hegelian thought. In defending this thesis, I examine the various stages in the development of Adorno’s thought, beginning with two texts from the 1930s and concluding with Negative Dialectics and ‘Skoteinos’. This allows us to see that Adorno’s concern to discover a way of thinking that is capable of doing justice to the ‘non-identical’ was present throughout his philosophical career.     

Alexithymia and Affect Intensity of Fine Artists

Research on creative artists has examined mainly their personality traits or cognitive abilities. However, it seems important to explore also their emotional traits to complete the profile. This study examines two emotional characteristics: alexithymia and affect intensity. Even if most research suggests that artists are less alexithymic and experience more intensively their emotions, Botella, M., Zenasni, F., and Lubart, T. (Psychology of Aesthetics, Creativity, and the Arts, 5 , 251, 2011) observed that art students were as alexithymic as psychology students and more alexithymic than a normative population. The aim of this study was to examine these issues with artists and non‐artists and to compare artists to art students. Results indicate that artists are less alexithymic and present higher affect intensity than non‐artists. Moreover, results show that art students present more difficulties processing their emotions than artists.     

Possible competences to be aimed at in ethics education – Ethical competences highlighted in educational research journals

Abstract

The aim of this article is to present varieties of ethical competence that are highlighted in ethics and moral education research articles, and to discuss them in the light of competences stressed in the Swedish curriculum, understood as an example of ethics education in compulsory school. The material consists of 1,940 educational research articles published between 2000 and 2015, and the method of analysis is inductive, focusing on ethical competence. One finding is the similarity between the study’s tentative formulation of identified ethical competences in four categories, and Rest’s understanding of acting morally, captured in the four components: sensitivity, judgement, motivation and implementation. Based on the analysis of the articles, broader understandings of these focuses are developed, and later discussed in relation to Swedish ethics education, characterised as both a conservative and liberal values education. The analyses and comparison show the importance of the components of moral sensitivity and moral implementation and their relative absence in the Swedish curriculum, but also how moral judgement must include a competence to evaluate moral motivations, where empirically testable reasons are also central. Moreover, the risk of neglecting contextual, situational and knowledge-related aspects of ethical competence is highlighted.