Coordination Dynamics of the Bipedal Galloping Pattern

A motion equation in relative phase was developed that incorporates the spatial-temporal pattern of the bipedal gallop along with the more commonplace patterns of the bipedal jump and walk-run. In 3 experiments, human participants (N = 6 per experiment) simulated the bipedal gait patterns through the rhythmic motions of hand-held pendulums. Predictions of the motion equation for coordination equilibria and their respective degrees of stability were confirmed. In particular, the gallop pattern was less stable than the fundamental in-phase and antiphase patterns but changed in qualitatively similar ways to those gaits as a function of limb asymmetry and movement frequency. The relation between the modeled coordination dynamics and the kinematic characteristics of real bipedal galloping is discussed.     

„Es waren ja fast alle weggegangen“

The complex and partly disputed history of German psychoanalysis during the Third Reich has been thoroughly investigated to date. There are various stages of historical analysis which are distinguished by differing discourses that are presented as part of this work. The first stage of historical analysis was characterized by conflicts within the German psychoanalytical societies and marked by two antagonistic narratives about the transformation of German psychoanalysis during the Third Reich. This study investigated which discourses on the history of German psychoanalysis were integrated into the professional biographies of the first generation of post-war psychoanalysts. In this study 23 narrative interviews were conducted with psychoanalysts who where born before 1st January 1937 focusing on the professional biography and the results were analyzed. The interviewees stressed the ‘damage’ to German psychoanalysis in general and on their training in particular. The ‘damage’ was described as an uncontrollable result of National Socialism and the structural and theoretical changes that were connected to it whereby its effects continued to impact on post-war psychoanalysis. Especially the discourses of the first stage of historical analysis appear to have been integrated into professional biographies and are still having an impact on the interpretation of history for the post-war generation to this day. The history of psychoanalysis is presented as a narrative of ‘rescue’ or ‘liquidation’ of psychoanalysis during the Third Reich depending on the professional identity of the psychoanalysts.     

Clear heads are cool heads: Emotional clarity and the down-regulation of antisocial affect

Emotional clarity results in reduced anger, but it is important to better understand why this is true. Drawing upon existing cybernetic models of affect regulation, the authors propose that affect down-regulation operations are crucial to understanding the clarity/anger relationship. A two study, multi-method investigation provided support for these hypotheses. Study 1 used dispositional measures of emotional clarity, anger control, and trait anger, and found that anger control mediated the relationship between clarity and reduced anger. Study 2 found that individuals high in emotional clarity were successful in correcting for the influence of aggressive primes on subsequent evaluations. Importantly, though, disrupting these affect regulation operations through the imposition of cognitive load left emotionally clear individuals as susceptible to antisocial affect priming as emotionally unclear individuals. In total, the studies suggest that emotional clarity is closely associated with the effortful down-regulation of antisocial affect.     

A Child With Autism Spectrum Disorder Teaches Siblings to Skateboard: Effects on Sibling Skills and Family Social Behavior

Abstract

Children with autism spectrum disorder (ASD) may have few common activities with their siblings who do not have ASD, and this can limit their opportunities for social play. In this study, we used a multiple-baseline across skills design to assess the effects of a boy with ASD following an activity schedule to teach his favorite activity of skateboarding to his two siblings who do not have ASD. Family social behavior was also measured before and after sibling training. After training by the boy with ASD, both of the siblings’ skateboarding skills improved, and measures of family social behavior also increased. Results suggest that sibling relationships may benefit when a child with ASD teaches siblings to play.     

On the relative importance of linear model and human judge(s) in combined forecasting

When and to what extent should forecasts rely on linear model or human judgment? The judgmental forecasting literature suggests that aggregating model and judge using a simple 50:50 split tends to outperform the two inputs alone. However, current research disregards the important role that the structure of the task, judges’ level of expertise, and the number of individuals providing a forecasting judgment may play. Ninety-two music industry professionals and 88 postgraduate students were recruited in a field experiment to predict chart entry positions of pop music singles in the UK and Germany. The results of a lens model analysis show how task structure and domain-specific expertise moderate the relative importance of model and judge. The study also delineates an upper boundary to which aggregating multiple judgments in model-expert combinations adds predictive accuracy. It is suggested that ignoring the characteristics of task and/or judge may lead to suboptimal forecasting performance.     

Tracing the Path from Personality — via Cooperativeness — to Conservation

Ecological behaviour is often conceptualized as an instance of cooperating in a social dilemma situation. Thus, it has been argued to relate to dispositional tendencies of moral virtue and pro‐social orientation. To embed such notions in models of basic personality, we herein predicted that the recently proposed sixth basic personality factor, Honesty–Humility — which specifically pertains to individual differences in cooperativeness — is linked to environmental attitudes and ecological behaviour. Results from two studies (N = 137 and N = 531, respectively) supported these hypotheses and showed that Honesty–Humility explains incremental variance beyond the remaining, more classical five factors of personality. In addition, mediation analyses revealed that Honesty–Humility exerts part of its influence via individual differences in pro‐social value orientations. Individual tendencies to cooperate in social dilemma situations could thus be shown to form a bridge between basic personality dimensions and ecological behaviour. Copyright © 2012 John Wiley & Sons, Ltd.     

Modeling Nonlinear Change via Latent Change and Latent Acceleration Frameworks: Examining Velocity and Acceleration of Growth Trajectories

A general equadion is presented, covering all arbitrary values for the true population splits, for obtaining the true population phi, given observed cell frequencies for a selected sample, and true population splits. A nongeneral solution is also offered, based on the use of the G Index. Demonstrations with hypothetical data are given.     

Actuality in Propositional Modal Logic

We show that the actuality operator A is redundant in any propositional modal logic characterized by a class of Kripke models (respectively, neighborhood models). Specifically, we prove that for every formula ${\phi}$ in the propositional modal language with A, there is a formula ${\psi}$ not containing A such that ${\phi}$ and ${\psi}$ are materially equivalent at the actual world in every Kripke model (respectively, neighborhood model). Inspection of the proofs leads to corresponding proof-theoretic results concerning the eliminability of the actuality operator in the actuality extension of any normal propositional modal logic and of any “classical” modal logic. As an application, we provide an alternative proof of a result of Williamson’s to the effect that the compound operator A□ behaves, in any normal logic between T and S5, like the simple necessity operator □ in S5.