Disorganization and timing of motor behavior : insight from gesture impairments and movement patterns in schizophrenia

Background: Motor symptoms are frequent phenomena across the entire course of schizophrenia1. Some have argued that disorganized behavior was associated with aberrant motor behavior. We have studied the association of motor disturbances and disorganization in two projects focusing on the timing of movements. Method: In two studies, we assessed motor behavior and psychopathology. The first study applied a validated test of upper limb apraxia in 30 schizophrenia patients2,3. We used standardized video assessments of hand gestures by a blinded rater. The second study tested the stability of movement patterns using time series analysis in actigraphy data of 100 schizophrenia patients4. Both stability of movement patterns and the overall amount of movement were calculated from data of two hours with high degrees of social interaction comparable across the 100 subjects. Results: In total, 67% of the patients had gesture performance deficits3. Most frequently, they made spatial, temporal and body-part-as-object errors. Gesture performance relied on frontal lobe function2. Poor gesture performance was associated with increased disorganization scores. In the second study, we found disorganization to be predicted only by more irregular movement patterns irrespective of the overall amount of movement4. Conclusion : Both studies provide evidence for a link between aberrant timing of motor behavior and disorganization. Disturbed movement control seems critical for disorganized behavior in schizophrenia.

Das offene Selbstgespräch in Dyaden: Dessen Zusammenhang mit Selbstdarstellungstendenzen und Einfluss auf den Partner

Ausgangslage und Fragestellung In der Forschung zum Selbstgespräch im Sport dominiert die Frage nach dessen Auswir-kungen auf die sprechende Person selber. Gemäss Diaz (1992) besitzt das offene Selbstgespräch aber neben der individuell-regulatorischen auch eine sozial-kommunikative Funktion. Diese sozial-kommunikative Funktion und der damit verbunde-ne Einfluss des Selbstgesprächs auf Beobachter wurden in der Sportwissenschaft bisher nur marginal untersucht (z.B. Gould & Weiss, 1981; Van Raalte, Brewer, Cornelius & Pe-titpas, 2006). Im angestrebten Forschungsvorhaben sollen zwei Fragen geklärt werden: Steht das of-fene, während dem Wettkampf geäusserte Selbstgespräch eines Athleten in Zusammen-hang mit dessen Selbstdarstellung? Beeinflusst das offene Selbstgespräch eines Athle-ten den Dyadenpartner und wie sie sich gegenseitig wahrnehmen? Methode Es werden Doppelpartien im Badminton per Videokamera aufgezeichnet. Mittels einer Korrelationsanalyse soll überprüft werden, ob die so erhobenen Selbstgesprächsaussa-gen mit dem Persönlichkeitsmerkmal „Selbstdarstellung“ der Probanden zusammenhän-gen. Nach Spielschluss werden die Probanden entsprechend eines video-stimulierten Fremdkonfrontationsinterviews mit Spielausschnitten konfrontiert, die offenes Selbstge-spräch ihres Dyadenpartners enthalten. Sie werden dabei nach ihren Kognitionen sowie Emotionen gefragt, die sie während der entsprechenden Spielsituation erlebten. Aktuelle Fragen Welcher Fragebogen zur Erhebung des Persönlichkeitsmerkmals „Selbstdarstellung“ soll Verwendung finden? Zur Auswahl steht ein noch zu übersetzender, validierter, engli-scher und sportspezifischer Fragebogen und die Verwendung eines deutschen Frage-bogens, der habituelle Selbstdarstellungstechniken im Allgemeinen erhebt. Wie soll beim video-stimulierten Fremdkonfrontationsinterview vorgegangen werden? Werden den Probanden z.B. das ganze Spiel oder nur ausgewählte Ausschnitte gezeigt, in denen offenes Selbstgespräch vorkommt? Wie zeitnah muss das Interview durchge-führt werden? Literatur Diaz, R. M. (1992). Methodological Concerns in the Study of Private Speech. In R. M. Diaz & L. E. Berk (Eds.), Private speech. From social interaction to self-regulation (pp. 55-81). Hillsdale, NJ: Lawrence Erlbaum. Gould, D. & Weiss, M. (1981). The effects of model similarity and model talk on self-efficacy and muscular endurance. Journal of Sport Psychology, 3, 17-29. Van Raalte, J. L., Brewer, B. W., Cornelius, A. E. & Petitpas, A. J. (2006). Self-presentational effects of self-talk on perceptions of tennis players. Hellenic Journal of Psychology, 3, 134-149.

Intergroup bias in third-party punishment stems from both ingroup favoritism and outgroup discrimination

Social norms pervade almost every aspect of social interaction. If they are violated, not only legal institutions, but other members of society as well, punish, i.e., inflict costs on the wrongdoer. Sanctioning occurs even when the punishers themselves were not harmed directly and even when it is costly for them. There is evidence for intergroup bias in this third-party punishment: third-parties, who share group membership with victims, punish outgroup perpetrators more harshly than ingroup perpetrators. However, it is unknown whether a discriminatory treatment of outgroup perpetrators (outgroup discrimination) or a preferential treatment of ingroup perpetrators (ingroup favoritism) drives this bias. To answer this question, the punishment of outgroup and ingroup perpetrators must be compared to a baseline, i.e., unaffiliated perpetrators. By applying a costly punishment game, we found stronger punishment of outgroup versus unaffiliated perpetrators and weaker punishment of ingroup versus unaffiliated perpetrators. This demonstrates that both ingroup favoritism and outgroup discrimination drive intergroup bias in third-party punishment of perpetrators that belong to distinct social groups.

EPA-1380 – Coordinated body-movement reflects psychotherapy outcome

Social interaction is a core aspect of human life that affects individuals’ physical and mental health. Social interaction usually leads to mutual engagement in diverse areas of mental, emotional, physiological and physical activity involving both interacting persons and subsequently impacting the outcome of interactions. A common approach to the analysis of social interaction is the study of the verbal content transmitted between sender and receiver. However, additional important processes and dynamics are occurring in other domains too, for example in the area of nonverbal behaviour: In a series of studies, we have looked at nonverbal synchrony – the coordination of two persons’ movement patterns – and it‘s association with relationship quality and with the outcome of interactions. Using a computer-based algorithm (Motion Energy Analysis, MEA: Ramseyer & Tschacher, 2011), which automatically quantifies a person‘s body-movement, we were able to objectively calculate nonverbal synchrony in a large number of dyads interacting in various settings. In a first step, we showed that the phenomenon of nonverbal synchrony exists at a level that is significantly higher than expected by chance. In a second step, we ascertained that across different settings – including patient-therapist dyads and healthy dyads – more synchronized movement was associated with better relationship quality and better interactional outcomes. The quality of a relationship is thus embodied by the synchronized movement patterns emerging between partners. Our studies suggest that embodied cognition is a valuable approach to research in social interaction, providing important clues for an improved understanding of interaction dynamics.

Dopaminergic stimulation increases selfish behavior in the absence of punishment threat.

RATIONALE People often face decisions that pit self-interested behavior aimed at maximizing personal reward against normative behavior such as acting cooperatively, which benefits others. The threat of social sanctions for defying the fairness norm prevents people from behaving overly selfish. Thus, normative behavior is influenced by both seeking rewards and avoiding punishment. However, the neurochemical processes mediating the impact of these influences remain unknown. Several lines of evidence link the dopaminergic system to reward and punishment processing, respectively, but this evidence stems from studies in non-social contexts. OBJECTIVES The present study investigates dopaminergic drug effects on individuals' reward seeking and punishment avoidance in social interaction. METHODS Two-hundred one healthy male participants were randomly assigned to receive 300 mg of L-3,4-dihydroxyphenylalanine (L-DOPA) or a placebo before playing an economic bargaining game. This game involved two conditions, one in which unfair behavior could be punished and one in which unfair behavior could not be punished. RESULTS In the absence of punishment threats, L-DOPA administration led to more selfish behavior, likely mediated through an increase in reward seeking. In contrast, L-DOPA administration had no significant effect on behavior when faced with punishment threats. CONCLUSIONS The results of this study broaden the role of the dopaminergic system in reward seeking to human social interactions. We could show that even a single dose of a dopaminergic drug may bring selfish behavior to the fore, which in turn may shed new light on potential causal relationships between the dopaminergic system and norm abiding behaviors in certain clinical subpopulations.

DAT1 polymorphism determines L-DOPA effects on learning about others' prosociality.

Despite that a wealth of evidence links striatal dopamine to individualś reward learning performance in non-social environments, the neurochemical underpinnings of such learning during social interaction are unknown. Here, we show that the administration of 300 mg of the dopamine precursor L-DOPA to 200 healthy male subjects influences learning about a partners' prosocial preferences in a novel social interaction task, which is akin to a repeated trust game. We found learning to be modulated by a well-established genetic marker of striatal dopamine levels, the 40-bp variable number tandem repeats polymorphism of the dopamine transporter (DAT1 polymorphism). In particular, we found that L-DOPA improves learning in 10/10R genoype subjects, who are assumed to have lower endogenous striatal dopamine levels and impairs learning in 9/10R genotype subjects, who are assumed to have higher endogenous dopamine levels. These findings provide first evidence for a critical role of dopamine in learning whether an interaction partner has a prosocial or a selfish personality. The applied pharmacogenetic approach may open doors to new ways of studying psychiatric disorders such as psychosis, which is characterized by distorted perceptions of others' prosocial attitudes.

“Facebook Style”: The Use of Emoticons and Graphic Signs by Users in the Cape Flats

Over the last few years Facebook has become a widespread and continuously expanding medium of communication in Africa and worldwide. Being a new medium of social interaction, Facebook produces its own communication style. It is a style conditioned by the medium and the community of users. My focus of analysis is how Facebook users from the city of Cape Town create this style by means of emoticons and other graphic signs in order to reflect the reality of living in Cape Town’s underprivileged areas. This study is based on a theoretical framework which combines sociolinguistics with Computer-Mediated-Communication to study the emergence of a style peculiar of the online social networks. In a corpus of Coloured Facebook users from the Cape Flats, I have analysed the emergence of emoticons and other graphic signs related to Capetonian gang culture and then tracked the spread of these features to the extensive use by users not related to gangs. It can be deduced that in this process the analysed features amplify their meaning and are employed in a much broader context as their original use. Due to the development and spread of these features we can consider the peculiar electronic communication of Facebook as a style constrained by the electronic medium and its users. It is a style which serves the users to create social meaning and to express their linguistic identities.

Facebook style: The use of non-standard features in virtual speech conditioned by the medium Facebook

Over the last few years Facebook has become a widespread and continuously expanding medium of communication. Being a new medium of social interaction, Facebook produces its own communication style. My focus of analysis is how Facebook users from the city of Malaga create this style by means of phonic features typical of the Andalusian variety and how the users reflect on the use of these phonic features. This project is based on a theoretical framework which combines variationist sociolinguistics with CMC to study the emergence of a style peculiar of the online social networks. In a corpus of Facebook users from three zones of Malaga, I have analysed the use of non-standard phonic features and then compared them with the same features in a reference corpus collected on three beaches of Malaga. From this comparison it can be deduced that the analysed social and linguistic factors work differently in real and virtual speech. Due to these different uses we can consider the peculiar electronic communication of Facebook as a style constrained by the electronic medium. It is a style which serves the users to create social meaning and to express their linguistic identities.

Cultural Legacies and Political Preferences: The Failure of Separatism in the Swiss Jura

The study of secession generally stresses the causal influence of cultural identities, political preferences, or ecological factors. Whereas these different views are often considered to be mutually exclusive, this paper proposes a two-stage model in which they are complementary. We posit that cultural identities matter for explaining secessionism, but not because of primordial attachments. Rather, religious and linguistic groups matter because their members are imbued with cultural legacies that lead to distinct political preferences – in this case preferences over welfare statism. Further, ecological constraints such as geography and topography affect social interaction with like-minded individuals. On the basis of both these political preferences and ecological constraints, individuals then make rational choices about the desirability of secession. Instrumental considerations are therefore crucial in explaining the decision to secede, but not in a conventional pocketbook manner. To examine this theory, we analyze the 2013 referendum on the secession of the Jura Bernois region from the Canton of Berne in Switzerland, using municipal level census and referendum data. The results lend support to the theory and suggest one way in which the politics of identity, based on factors like language and religion, can be fused with the politics of interest (preferences for more or less state intervention into the polity and economy) to better understand group behavior.

Internet-mediated Phonetics

Facebook is a medium of social interaction producing its own style. The present study analyses how users from Malaga create this style through phonetic features of the local Spanish variety and how they reflect on the use of these features. Moreover, the use of non-standard variants by users from Malaga is examined and compared to an oral corpus. Results demonstrate that social factors work differently in real and virtual speech. Thus, the electronic medium constrains the phonetics of the local variety employed on Facebook. Facebook communication is seen as a style serving to create social meaning and to express linguistic identity.

Conversaciones sustantivas en el aula

En este ensayo se procura conceptualizar acerca de cómo los niños, niñas y docentes construyen interpretaciones compartidas en el aula. Desde el análisis dialógico (Bajtin), entendemos el aprendizaje de los alumnos desde sus “respuestas" en relación con las voces de los maestros, textos y pares. Distinguimos el tratamiento unívoco del lenguaje, propio del recitado; de su tratamiento como instrumento de pensamiento, en el intercambio dialógico y en el discurso interactivo. Se analiza como se guía a un grupo de escolares en una institución pública de educación especial; centrando la mirada en las interacciones conversacionales del debate y preguntándonos qué patrones contribuyen más eficazmente a sus aprendizajes. El diseño supone la búsqueda de lo cualitativo, lo irrepetible y lo singular; incorporando el paradigma “indiciario" (Guinzburg). En la sistematización registramos, que las preguntas auténticas indican que el maestro otorga prioridad al razonamiento por sobre la memorización. Se caracteriza la interacción cercana al debate, como apuntes colaborativos. Esta construcción dialógica de sentido promueve el aprendizaje, porque genera respuestas con argumentación y facilita el diálogo entre lo nuevo y lo ya conocido. Así, el modo en que los alumnos piensan y lo que pueden aprender está relacionado a la modalidad que los docentes desarrollan para responder a sus preguntas.

“Y…a mí me parece que es porque los niños ganaron" : relato y análisis de una experiencia pedagógica

Este relato presenta una experiencia pedagógica desarrollada con un grupo de niños de 2º ciclo, en proceso de alfabetización, que asisten a una escuela de recuperación - modalidad de Educación Especial - de la Ciudad Autónoma de Buenos Aires. Se analizan momentos clave de la experiencia a partir de los aportes de las teorías genéticas del desarrollo en el marco de la perspectiva interdisciplinaria (Elichiry, 2009). Se interpela el uso de categorías que históricamente se han utilizado y aún se utilizan para describir a los niños que habitan nuestras escuelas y se propone una reflexión sobre prácticas de enseñanza, de manera de ofertar entornos favorecedores que promuevan las potencialidades de los alumnos. El trabajo se inscribe en el marco de la documentación narrativa de experiencias pedagógicas que posibilita poner a prueba “lo que sucede" y “lo que nos sucede" en el trabajo diario, recuperando y reconstruyendo las voces de los diferentes actores (Suarez, 2007).

ExperNet: An Intelligent Multiagent System for WAN Management

This paper describes ExperNet, an intelligent multi-agent system that was developed under an EU funded project to assist in the management of a large-scale data network. ExperNet assists network operators at various nodes of a WAN to detect and diagnose hardware failures and network traffic problems and suggests the most feasible solution, through a web-based interface. ExperNet is composed by intelligent agents, capable of both local problem solving and social interaction among them for coordinating problem diagnosis and repair. The current network state is captured and maintained by conventional network management and monitoring software components, which have been smoothly integrated into the system through sophisticated information exchange interfaces. For the implementation of the agents, a distributed Prolog system enhanced with networking facilities was developed. The agents’ knowledge base is developed in an extensible and reactive knowledge base system capable of handling multiple types of knowledge representation. ExperNet has been developed, installed and tested successfully in an experimental network zone of Ukraine.