Health perception is a unique predictor of anxiety symptoms in non-clinical participants

This study evaluated the role of perceived health in predicting anxiety symptoms, bodily vigilance and agoraphobic cognitions among 71 individuals (30 females; mean age 19.9 years, SD=3.1) without a psychiatric history, including non-clinical panic attacks. Results indicated that, relative to anxiety sensitivity, perceived health was a distinct construct that incrementally predicted bodily-oriented catastrophic thinking (8% of unique variance) and heart-focused anxiety (13% of unique variance). Moreover, perceived health significantly incrementally predicted anxious arousal symptoms (9% of unique variance). Results are discussed in relation to the role of perceived health as a cognitive vulnerability factor for anxiety-related problems.     

Bridging the representational gap in the dynamic systems approach to development

We describe the relationship between the dynamic systems approach to development and a recent approach to the dynamics of representational states – the dynamic field approach. Both approaches share an emphasis on the concepts of stability (attractor states), instability (especially bifurcations), soft-assembly and flexibility. But the dynamic field approach adds the concept of ‘activation’ to capture the strength with which behaviorally relevant information is specified. By explicitly linking these dynamic systems approaches, we allow for more direct comparisons between dynamic systems theory and connectionism. We note three current differences between these two approaches to development: (1) the notion of stability is central to how representational states are conceptualized in the dynamic field approach; (2) the dynamic field approach is more directly concerned with the sensorimotor origins of cognition; and (3) the dynamic approach is less advanced with regard to learning. We conclude that proponents of the two approaches can learn from the respective strengths of each approach. We suspect these differences will largely disappear in the next 20 years.     

Nanoscale Science and Technology and People with Disabilities in Asia: An Ability Expectation Analysis

Science and technology, including nanoscale science and technology, influences and is influenced by various discourses and areas of action. Ableism is one concept and ability expectation is one dynamic that impacts the direction, vision, and application of nanoscale science and technology and vice versa. At the same time, policy documents that involve or relate to disabled people exhibit ability expectations of disabled people. The authors present ability expectations exhibited within two science and technology direction documents from Asia, as well as in two policy documents generated and influenced by disabled people from Asia. As well, the authors discuss the impact of the ability expectations exhibited in these four documents with respect to the relationship between science and technology and disabled people.     

Change occurs when body meets environment: A review of the embodied nature of development

The purpose of this paper is to outline the challenges of psychological research in addressing the mechanisms of emergence: how new behavioral patterns and cognitive abilities arise from the interaction of an organism with its environment in real time. We review some of the empirical studies on infant development with reference to Dynamical Systems accounts and relevant views such as the ecological approach to perception and action, and cover topics ranging from early motor skills to goal‐directed locomotion and to higher cognitive development. The central claim is that the results of these studies are essentially related: they suggest that there is a fundamental connection among perception, motor behavior, and cognition. In addition, we recount our attempt to re‐enact the situatedness and temporal structure of the decision‐making processes of human infants by using an autonomous robotic device. We conclude by highlighting several insights from the broad spectrum of studies looking into the embodied nature of adaptive behavior. In our view, such studies are making a profound contribution to uncovering the emergent mechanisms of intellectual and bodily activity throughout development.     

Using Dynamic Field Theory to extend the embodiment stance toward higher cognition

The embodiment stance emphasizes that cognitive processes unfold continuously in time, are constantly linked to the sensory and motor surfaces, and adapt through learning and development. Dynamic Field Theory (DFT) is a neurally based set of concepts that has turned out to be useful for understanding how cognition emerges in an embodied and situated system. We explore how the embodiment stance may be extended beyond those forms of cognition that are closest to sensorimotor processes. The core elements of DFT are dynamic neural fields (DNFs), patterns of activation defined over different kinds of spaces. These may include retinal space and visual feature spaces, spaces spanned by movement parameters such as movement direction and amplitude, or abstract spaces like the ordinal axis along which sequences unfold. Instances of representation that stand for perceptual objects, motor plans, or action intentions are peaks of activation in the DNFs. We show how such peaks may arise from input and are stabilized by intra-field interaction. Given a neural mechanism for instantiation, the neuronal couplings between DNFs implement cognitive operations. We illustrate how these mechanisms can be used to enable architectures of dynamic neural fields to perform cognitive functions such as acquiring and updating scene representations, using grounded spatial language, and generating sequences of actions. Implementing these DFT models in autonomous robots demonstrates how these cognitive functions can be enacted in embodied, situated systems.     

Justifying inference to the best explanation as a practical meta-syllogism on dialectical structures

This article discusses how inference to the best explanation (IBE) can be justified as a practical meta-argument. It is, firstly, justified as a practical argument insofar as accepting the best explanation as true can be shown to further a specific aim. And because this aim is a discursive one which proponents can rationally pursue in—and relative to—a complex controversy, namely maximising the robustness of one’s position, IBE can be conceived, secondly, as a meta-argument. My analysis thus bears a certain analogy to Sellars’ well-known justification of inductive reasoning (Sellars, In: Essays in honour of Carl G. Hempel, 1969); it is based on recently developed theories of complex argumentation (Betz, In: Theorie dialektischer Strukturen, 2010a).     

Petitio principii and circular argumentation as seen from a theory of dialectical structures

This paper investigates in how far a theory of dialectical structures sheds new light on the old problem of giving a satisfying account of the fallacy of petitio principii, or begging the question. It defends that (i) circular argumentation on the one hand and petitio principii on the other hand are two distinct features of complex argumentation, and that (ii) it is impossible to make general statements about the defectiveness of an argumentation that exhibits these features. Such an argumentation, in contrast, has to be evaluated on a case-by-case basis. “Petitio principii”, this paper thence suggests, is one name for, in fact, a multitude of different and quite complex dialectical situations which require specific analysis and evaluation.