Modulation of afterhyperpolarization evoked by doublets and increasing number of stimuli in rat motoneurons

The authors studied the influence of variable stimulation patterns on parameters of afterhyperpolarization (AHP) in rat spinal motoneurons using intracellular recording of antidromic action potentials. The action potentials analyzed were evoked by either (a) a single stimulus or pair of stimuli with gradually increasing interpulse intervals (IPI) of 5-20 ms or (b) an increasing number of stimulus pulses, from 1 to 4, at a constant IPI. It was demonstrated that modulations of AHP parameters after 2 pulses depended on the IPI, whereas the most significant changes in these parameters were found after the application of 2 or 3 stimuli in a series. The authors propose that changes in the AHP parameters have functional significance for motoneuronal firing pattern and therefore for motor unit force development during tetanic contractions.     

A Basic Bivariate Structure of Personality Attributes Evident Across Nine Languages

Here, two studies seek to characterize a parsimonious common‐denominator personality structure with optimal cross‐cultural replicability. Personality differences are observed in all human populations and cultures, but lexicons for personality attributes contain so many distinctions that parsimony is lacking. Models stipulating the most important attributes have been formulated by experts or by empirical studies drawing on experience in a very limited range of cultures. Factor analyses of personality lexicons of nine languages of diverse provenance (Chinese, Korean, Filipino, Turkish, Greek, Polish, Hungarian, Maasai, and Senoufo) were examined, and their common structure was compared to that of several prominent models in psychology. A parsimonious bivariate model showed evidence of substantial convergence and ubiquity across cultures. Analyses involving key markers of these dimensions in English indicate that they are broad dimensions involving the overlapping content of the interpersonal circumplex, models of communion and agency, and morality/warmth and competence. These “Big Two” dimensions—Social Self‐Regulation and Dynamism—provide a common‐denominator model involving the two most crucial axes of personality variation, ubiquitous across cultures. The Big Two might serve as an umbrella model serving to link diverse theoretical models and associated research literatures.     

Disparate roads to certainty processing strategy choices under need for closure

This paper describes a programme of research addressing an intriguing inconsistency in research findings about cognitive processes under a high need for cognitive closure (NFC). While early studies demonstrated that individuals who seek closure opt for closed-minded cognitive strategies, a growing body of research has identified a number of circumstances in which individuals who are high in NFC engage in effortful, open-minded information processing to an even greater extent than their low NFC counterparts. This has posed the challenge of delineating the circumstances under which people motivated to reduce uncertainty (i.e., attain closure) engage in effortful and open-minded cognition from those situations in which they rely on simplistic, low-effort strategies. This also calls for theoretical advancement in NFC theory. We discuss our proposed solution to this puzzle and the implications of this model for real-world social phenomena.     

When is a lie acceptable? Work and private life lying acceptance depends on its beneficiary

In this article we show that when analyzing attitude towards lying in a cross-cultural setting, both the beneficiary of the lie (self vs other) and the context (private life vs. professional domain) should be considered. In a study conducted in Estonia, Ireland, Mexico, The Netherlands, Poland, Spain, and Sweden (N = 1345), in which participants evaluated stories presenting various types of lies, we found usefulness of relying on the dimensions. Results showed that in the joint sample the most acceptable were other-oriented lies concerning private life, then other-oriented lies in the professional domain, followed by egoistic lies in the professional domain; and the least acceptance was shown for egoistic lies regarding one’s private life. We found a negative correlation between acceptance of a behavior and the evaluation of its deceitfulness.     

Detecting Clusters/Communities in Social Networks

Cohen's κ, a similarity measure for categorical data, has since been applied to problems in the data mining field such as cluster analysis and network link prediction. In this paper, a new application is examined: community detection in networks. A new algorithm is proposed that uses Cohen's κ as a similarity measure for each pair of nodes; subsequently, the κ values are then clustered to detect the communities. This paper defines and tests this method on a variety of simulated and real networks. The results are compared with those from eight other community detection algorithms. Results show this new algorithm is consistently among the top performers in classifying data points both on simulated and real networks. Additionally, this is one of the broadest comparative simulations for comparing community detection algorithms to date.     

Higher visuo-Attentional Demands of Multiple Object Tracking (MOT) Lead to A Lower Precision in Pointing Movements

Multiple object tracking (MOT) requires visually attending to dynamically moving targets and distractors. This cognitive ability is based on perceptual-attentional processes that are also involved in goal-directed movements. This study aimed to test the hypothesis that MOT affects the motor performance of aiming movements. Therefore, the participants performed pointing movements using their fingers or a computer mouse that controlled the movements of a cursor directed at the targets in the MOT task. The precision of the pointing movements was measured, and it was predicted that a higher number of targets and distractors in the MOT task would result in a lower pointing precision. The results confirmed this hypothesis, indicating that MOT might influence the performance of motor actions. The potential factors underlying this influence are discussed.     

Chimpanzees (Pan troglodytes) remember the location of a hidden food item after altering their orientation to a spatial array

Two chimpanzees (Pan troglodytes) had a direct view of an experimenter placing a food item beneath one of several cups within a horizontal spatial array. The chimpanzees then were required to move around the spatial array, shifting their orientation to the array by 180 degrees . Both chimpanzees remembered the location of the food item. In the next experiment, a visual barrier was placed between the chimpanzees and the spatial array after the food item had been hidden to prevent visual tracking of the location of the object during the chimpanzees' movement. One chimpanzee remembered the location of the hidden item in this variation. These results demonstrate another capacity for spatial memory in this species that complements data indicating chimpanzee spatial memory for invisible displacements, array rotations, and array transpositions.     

Confidant Relations Among Taiwanese: Implications for Ethnic Chinese Health Care Treatment

The select individual(s) whom one trusts in sharing important personal matters is sometimes referred to as a confidant. The confidant relationship has received increasing attention in recent years as a major social factor contributing to individual health and wellness. Yet, little empirical data has been available to guide health researchers, policy-makers, and practitioners. In this study, 142 adult Taiwanese responded to a structured questionnaire. Participants comprised 105 females, 32 males, and five with sex unspecified (overall mean age?=?33.8, age range?=?18 to 74 years). They were asked whether they had a confidant, and if so, to describe various features of this relationship. Contrary to previous studies conducted in Europe and the Americas, our investigation found that Taiwanese men were equally likely as Taiwanese women to have a confidant (87.5 % of males and 89.5 % for females). Taiwanese women were significantly more likely to have a female rather than a male confidant, whereas males showed no such sex difference. A significantly higher percentage of confidants were non-family members rather than spouses or other immediate/extended family members. This finding is consistent with research on the relatively minor salience of emotional intimacy in Taiwanese marriages and the hierarchical structures of many Taiwanese families. The implications of our findings for enhancing Taiwanese and broader ethnic Chinese health treatment are discussed.     

Discussion: Toward a social‐constructivist view of the psychoanalytic situation

The three papers by Modell, Aron, and Greenberg are discussed in terms of their relationship to a new paradigm for understanding the psychoanalytic situation. The paradigm is called social‐construct‐ivist to capture both the idea of the analyst's participation and the idea of construction of meaning. It is argued that these theorists, as well as many of the authors they cite as part of a broad movement in the field, do not consistently meet the criteria for this paradigm, although they seem to be aiming for it. An important source of inconsistency and confusion derives from the confounding of the two axes: drive‐relational and positivist‐constructivist. Many relational theorists who hold fast to the idea that analysts can grasp the truth of both their own experience and that of the patient are no closer to the constructivist point of view than was Freud. The call by Aron and Greenberg for greater attention to the patient's resisted experience of the analyst's subjectivity is discussed in terms of its potential benefits and problems. The ritualized asymmetry of the psychoanalytic situation is said to have important functions, including prevention of excessive involvement and protection of the unobjectionable positive transference and of a degree of idealization. Modell's notion of paradox, which makes the therapeutic relationship seem “real”; and “unreal”; at the same time, is seen as a special instance of the always precarious social construction of reality. It is argued, moreover, that the social and individual aspects of experience are interdependent. Neither is reducible to the other, and both should be understood, like many other issues in the new paradigm, in terms of a dialectical interplay of figure and ground in experience.