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New Laterality Models

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Causality and Development
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Abstract

The last chapter of the book on lateralization continues to explore modeling. First, it gives some of the author’s conceptualizations on laterality that are more speculative, including on the stages in the evolution of lateralization and steps in change related to that model. Most of the chapter reviews the host of models that have been highlighted in the prior chapters on laterality and its development and evolution. These include the combined invariant-progressive model, which is my integrative one for the opposing equipotential and invariant ones. That is, early laterality might follow the adult pattern, but is still quite variable, unstable, susceptible to environment effects, etc. The developmental cascade model is an influential one, and I indicate the nature of the progressive transfers involved. The chapter reviews the environmental and genetic ones, among others. Some newer models that also might contribute to understanding laterality include ones for embodiment, nonlinear dynamic systems theory and attractors, and networks. The chapter reflects on the evolution of laterality, as well. It concludes with a compendium of areas that have been researched that are beyond the scope of the present work, and thus offers potential future research directions. Finally, it emphasizes, once more, the value of the activation-inhibition coordination hypothesis of lateralization. This chapter concludes the portion of the book on Causality, and it emphasizes the multi-factorial nature of causality in behavioral expression, as well as the author’s own work as possible helping in understanding the development of causality in one area (laterality) in a way consistent with a more general approach to understanding causality in psychology, as per Young (Unifying causality and psychology: being, brain and behavior. Springer International Publishing, Cham, 2016).

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Young, G. (2019). New Laterality Models. In: Causality and Development. Springer, Cham. https://doi.org/10.1007/978-3-030-02493-2_9

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