Introduction

There are very significant conceptual links between theories of social macroevolution and theories of the World System development. It is shown that the growth of the World System complexity and integrity can be traced through a system of phase transitions of macroevolution. The first set of phase transition is connected with the agrarian, industrial, and information-scientific revolutions (that are interpreted as changes of “production principles”). The second set consists of phase transitions within one production principle. These phase transitions are analyzed on the basis of the World System urbanization dynamics, but they can be traced with respect to the other (cultural, economic, technological, demographic, political, etc.) dimensions of the World System development.     

Mathematical Models of Central Pattern Generators in Locomotion

Possible neural connective patterns and functions with respect to interlimb coordination are studied theoretically with a mathematical model of the central pattern generating system for cat locomotion. Activities in populations of neurons controlling limb joint flexors and extensors in all four limbs are represented by a system of nonlinear differential equations. Solutions of the system for various parameter values simulate various gaits of the cat. The model is shown to be capable of generating all gaits of the cat and accounting for corresponding phase changes in interlimb coordination. The model also exhibits smooth changes of gait, and smooth initiation and termination of stepping. Further, within each limb, muscle sequencing, step cycle phases, and flexor-extensor interactions can be studied. The model suggests that one of the simplest mechanisms for a central command system to change the gait is via inhibition of specific interlimb propriospinal pathways. In a final section, properties of both proposed single limb and interlimb models are reviewed with specific reference to planning future experimental and theoretical studies.     

A relational theory of working

Building on diverse influences from critical perspectives in vocational psychology and the relational movement in contemporary psychological discourse, this article introduces the relational theory of working. Attending to the full array of people who work and who want to work, the relational theory conceptualizes working as an inherently relational act. A relational theory provides a framework for understanding ways in which working is embedded in external and internal relational contexts. To establish the conceptual infrastructure for the relational theory, several propositions are advanced, which summarize observations and inferences about the intersection of working and relationships and highlight the inherent relational context of working. The article concludes with implications for practice, policy, and research.     

In Search of a Reconciliation Between Semiotics,Thermodynamics and Metasystem Transition Theory

The disciplines of cybernetics, semiotics and thermodynamics investigate evolutionary processes quite independently from each other. The aim of this paper is to draw the parallels and point out the possibility and necessity of a reconciliation between these disciplines. The concept of metasystem transition has been proposed by Turchin as a quantum of evolution from a cybernetic point of view. Semiotic processes are of prime importance for the realisation of metasystem transitions in the course of evolution. From a thermodynamic point of view, the emergence of more complex, self-producing agents depends on the emergence of more advanced forms of semiosis. As an evolutionary consequence, more symbolic forms of semiosis that allow higher competence for abstraction and anticipation emerge.     

‘Only connect’ – a sexually abused girl's rediscovery of memory and meaning as she works towards the transition from a therapeutic community to a foster-family

This paper looks at the role of individual psychotherapy with a severely sexually abused girl in a therapeutic community, and the place of this work as she makes the transition into foster-care. It emphasizes the importance, not only of the individual work, but also of the drawing together of the work around the child, particularly at such a critical time. There is discussion of the ideas of ‘deadness’ versus ‘aliveness’ in the therapy, and detailed case material is used.     

Emergent complexity: What uphill analysis or downhill invention cannot do

In these notes we review emergent phenomena in complex systems, emphasizing ways to identify potential underlying universal mechanisms that generate complexity. The discussion focuses on the emergence of collective behavior in dynamical systems when they are poised near a critical point of a phase transition, either by tuning or by self-organization. We then present the rationale for our proposal that the brain is naturally poised near criticality and review recent results as well as the implications of this view of the functioning brain.     

Expectations and perceptions at school transitions: The role of peer status and aggression

This study integrated research on aggression, peer status, and social and academic functioning across the middle- and high-school transitions. We examined how peer status and aggression are related to adolescents' expectations about their academic and social functioning in a new school system before the transition into that system, and their perceived academic and social functioning after the transition. Social preference, perceived popularity, overt and relational aggression, and social and academic expectations were assessed in Grades 5 and 8; identical peer status and aggression constructs and perceived social and academic functioning were assessed in Grades 6 and 9. Results indicated moderate correlations between adolescents' social and academic expectations and perceived functioning across both school transitions. Girls reported higher social and academic functioning than boys did in most cases. Perceived popularity was consistently positively associated with academic and social expectations for middle and high school, whereas social preference was associated with perceived social functioning in both middle school and high school. The link between aggression and outcome variables varied by age and was moderated by gender and peer status.