Attention as a mediating variable in the dynamics of bimanual coordination

The influence of focal attention on the coordination dynamics in a bimanual circle drawing task was investigated. Six right-handed and seven left-handed subjects performed bimanual circling movements, in two modes of coordination, symmetrical or asymmetrical. The frequency of movement was scaled by an auditory metronome from 1.50 Hz to 3.00 Hz in 7 steps. On each trial, subjects were required to attend either to the dominant hand, to a neutral position, or to the nondominant hand.The uniformity of the relative tangential angle was lower in asymmetrical than in symmetrical conditions, but was not influenced by the direction of attention. In the asymmetrical mode, shifts in RTA relations, suggestive of loss of stability, were evident as the movement frequency was increased. Typically, these shifts were mediated by distortions of the trajectory of the nondominant limb. When the nondominant hand was the focus of attention, movements of this hand were more circular, and temporal variability was reduced, at the cost of a greater deviation from the target frequency. Movements of the dominant hand were not affected by the direction of attention. The findings show that although directed attention acts to modify the coordination dynamics, it does so primarily at the level of the individual hands, rather then in terms of the relation between them.     

Distinguishing between level and impact of rumination as predictors of depressive symptoms: An experience sampling study

Rumination—repetitively thinking about one's emotional state, its causes and consequences—exacerbates negative mood and plays an important role in the aetiology and maintenance of depression. Yet, it is unclear whether increased vulnerability to depression is associated with simply how much a person ruminates, or the short-term impact rumination has on a person's negative mood. In the current study, we distinguish between the level versus the impact of rumination, and we examine how each uniquely predicts changes in depressive symptoms over time in an undergraduate sample. Using experience sampling, we assessed students’ (N = 101) subjective experiences of positive and negative affect and their use of rumination and distraction in daily life for seven days. Participants also reported their depressive symptoms before and after the experience sampling. Increases in depressive symptoms over the week were predicted by how much people ruminated, but not by its impact on negative mood.     

An inexpensive variable time period integrator for electromyographic signals

It is frequently desirable for clinical researchers to have some means of precisely quantifying average levels of electromyographic signals over a series of finite time periods. This paper presents the design and development of an inexpensive variable time period integrator that can be adapted to most commercially available electromyograph equipment. The prototype instrument was found to give precise readings in the order of l%–2% accuracy when adjusted to specification.     

The contextual action relationship between a tool and its action recipient modulates their joint perception

Facilitatory effects have been noted between tools and the objects that they act upon (their “action recipients”) across several paradigms. However, it has not been convincingly established that the motor system is directly involved in the joint visual processing of these object pairings. Here, we used the attentional blink (AB) paradigm to demonstrate privileged access to perceptual awareness for tool–action recipient object pairs and to investigate how motor affordances modulate their joint processing. We demonstrated a reduction in the size of the AB that was greater for congruent tool–action recipient pairings (e.g., hammer–nail) than for incongruent pairings (e.g., scissors–nail). Moreover, the AB was reduced only when action recipients followed their associated tool in the temporal sequence, but not when this order was reversed. Importantly, we also found that the effect was sensitive to manipulations of the motor congruence between the tool and the action recipient. First, we observed a greater reduction in the AB when the tool and action recipient were correctly aligned for action than when the tool was rotated to face away from the action recipient. Second, presenting a different tool as a distractor between the tool and action recipient target objects removed any benefit seen for congruent pairings. This was likely due to interference from the motor properties of the distractor tool that disrupted the motor synergy between the congruent tool and action recipient targets. Overall, these findings demonstrate that the contextual motoric relationship between tools and their action recipients facilitates their visual encoding and access to perceptual awareness.     

Concerning Interpretations of Activity Theory

Activity theory (AT) is the most recognised part of Russian psychology outside Russia. However the general view of AT in international science is rather unilateral, lacking substantial aspects and areas necessary for proper understanding. This article is aimed at expanding the image of AT dominant in the mainstream which reduces the AT trend to A.N. Leontiev’s theory. This reduction impoverishes the creative potentialities of the trend, and decreases the ability of AT to contribute to international science. We aim to reveal that AT is not limited to Leontiev’s approach, to explain which ideas of the founders of AT, S.L. Rubinstein and L.S. Vygotsky, were pursued and which were rejected by A.N. Leontiev, and to assess another important contribution to the AT trend - the theory of B.G. Ananiev, where the ideas of AT’s founders were developed which were not succeeded by A.N. Leontiev. Historical causes and consequences of the general reduction of the image of AT in the mainstream to Leontiev’s theory are considered: why the discrepancies between views of Rubinstein, Vygotsky and Leontiev were hardly ever discussed in public and why other theories contemporary to Leontiev’s theory were never given account appropriate to their value in Russia and remain almost unknown abroad.     

Reaction of a Ni-coated Al nanoparticle to form B2-NiAl: A molecular dynamics study

The kinetic reaction in a Ni-coated Al nanoparticle with equi-atomic fractions and diameter of approximately 4.5 nm is studied by means of molecular dynamics simulation, using a potential of the embedded atom type to model the interatomic interactions. First, the large driving force for the alloying of Ni and Al initiates solid state amorphization of the nanoparticle with the formation of Ni₅₀Al₅₀ amorphous alloy. Amorphization makes intermixing of the components much easier compared to the crystalline state. The average rate of penetration of Ni atoms can be estimated to be about two times higher than Al atoms, whilst the total rate of inter-penetration can be estimated to be of the order of 10^?2 m/s. The heat of the intermixing with the formation of Ni₅₀Al₅₀ amorphous alloy can be estimated at approximately ?0.34 eV/at. Next, the crystallization of the Ni₅₀Al₅₀ amorphous alloy into B2-NiAl ordered crystal structure is observed. The heat of the crystallization can be estimated as approximately ?0.08 eV/at. Then, the B2-NiAl ordered nanoparticle melts at a temperature of approximately 1500 K. It is shown that, for the alloying reaction in the initial Ni-coated Al nanoparticle, the ignition temperature can be as low as approximately 200 K, while the adiabatic temperature for the reaction is below the melting temperature of the nanoparticle with the B2-NiAl ordered structure.     

The Contemporary Study of Religion,Society and Politics in Russia: A Scholar’s Reflections1

Over the past decade, religious issues in France have come to the fore in the public debate. The 1905 law on the separation of church and state structures the concept of ‘laïcité’ as a configuration for the treatment of religions in France. This political and media debate has highlighted the representative institutions of mainstream religions in France, including the Orthodox Church. Obliged to take a position, both collectively with other religious actors and individually, Orthodoxy in France seems to be only marginally affected by this controversy. However, through press releases, memos, articles in the national press and online resources, the Orthodox Church has appropriated the issue of ‘laïcité à la française’. Behind these different messages lie the issues of the place of Orthodoxy in the French religious landscape and the (suspected) resistance of Orthodoxy against secularising forces in the minority context of the diaspora in Western Europe. Orthodoxy in France constitutes a key element of identity for the national Orthodox communities of the diaspora. Laïcité shapes and to a large extent justifies the anticanonical compromise of the ecclesiological treatment of the Orthodox communities in the diaspora, which are grouped by ethnicity. In this context, I assess how the legal and societal contexts of laïcité influence the main configurations of Orthodoxy in France, in terms of relations with the public authorities, relations with other religions and confessions, and the inter-Orthodox situation.     

The effect of mortality salience on the attitudes toward state control: The case of Russia

Our study examined the effects of mortality salience (MS) on attitudes toward state control in different domains in Russia. Using the theory of Conservatism as Motivated Social Cognition (CMSC) and the Terror Management Theory (TMT), we put forward two alternative hypotheses. Based on the CMSC, MS would enhance the approval of state control in different spheres, while, in line with TMT, the MS effect would be dependent on pre-existing views. The participants in the study were 450 Russian students who completed a questionnaire to measure attitudes toward state control in six spheres of life (the economy, the mass media, political parties, social organisations, science and education). After a week, they were randomly assigned one of three conditions—MS, frightening, and a neutral condition—and again completed the questionnaire on political attitudes. Our results showed that MS mostly provokes “control shifting,” confirming the CMSC's hypothesis. However, a separate analysis conducted among people with different pre-existing political attitudes has revealed that “control shifting” is more pronounced for freedom-oriented participants. We discuss these findings in line with alternative views on the nature of the MS effect and specifics of socio-political context.     

An Exploratory Evaluation of the Family Meal Intervention for Adolescent Anorexia Nervosa

Although weight restoration is a crucial factor in the recovery of anorexia nervosa (AN), there is scarce evidence regarding which components of treatment promote it. In this paper, the author reports on an effort to utilize research methods in her own practice, with the goal of evaluating if the family meal intervention (FMI) had a positive effect on increasing weight gain or on improving other general outcome measures. Twenty‐three AN adolescents aged 12–20 years were randomly assigned to two forms of outpatient family therapy (with [FTFM] and without [FT]) using the FMI, and treated for a 6‐month duration. Their outcome was compared at the end of treatment (EOT) and at a 6‐month posttreatment follow‐up (FU). The main outcome measure was weight recovery; secondary outcome measures were the Morgan Russell Global Assessment Schedule (MRHAS), amenorrhea, general psychological symptoms, and eating disorder symptoms. The majority of the patients in both groups improved significantly at EOT, and these changes were sustained through FU. Given its primarily clinical nature, findings of this investigation project preclude any conclusion. Although the FMI did not appear to convey specific benefits in causing weight gain, clinical observation suggests the value of a flexible stance in implementation of the FMI for the severely undernourished patient with greater psychopathology.