The plan for this volume emerged during the international Leipzig conference commemorating the centenary of the death of Gustav Fechner.

ABSTRACT This article recovers the discussion of the relationship between religion, human nature and happiness in the Scottish Enlightenment physician John Gregory’s (1724–1773) A Comparative View of Human Nature (1765). Through examining Gregory’s best-selling but understudied text, this article explores how the Aberdeen Enlightenment’s own branch of the wider Scottish ‘science of human nature’, centred at the famous Aberdeen Philosophical Society, was as deeply concerned with the study of religion as it was the philosophy of mind. Gregory examined how the (...) purported cultural spread of dogmatic scepticism, associated by the Aberdonians with David Hume, threatened individual happiness and social tranquillity by removing the crutch of religious belief upon which the multitude (though not the philosopher) depended. In doing so, it suggests that the contribution made by physicians to the Scottish Enlightenment’s engagement with religion has been unjustly ignored. (shrink)

This paper outlines the qualitative foundations of a “quasiclassical” theory in which particles are pictured as spatially extended periodic excitations of a universal background field, interacting with each other via nonlinearity in the equations of motion for that field, and undergoing collapse to a much smaller volume if and when they are detected. The theory is based as far as possible directly on experiment, rather than on the existing quantum mechanical formalism, and it offers simple physical interpretations of such concepts (...) as mass, 4-momentum, interaction, potentials, and quantization; it may lead directly to the standard equations of quantum theory, such as the multiparticle Schrödinger equation, without going through the conventional process of “quantizing” a classical theory. The theory also provides an alternative framework in which to discuss wave-particle duality and the quantum “measurement problem”; in particular, it is suggested that the unpredictability of quantum phenomena may arise from “deterministic chaos” in the behavior of the background field. (shrink)

Open peer commentary on the article “Examining the Role of Re-Presentation in Mathematical Problem Solving: An Application of Ernst von Glasersfeld’s Conceptual Analysis” by Victor V. Cifarelli & Volkan Sevim. Upshot: In this commentary, I address the viability of conducting constructivist teaching experiments to develop models of students’ conceptualizations. I also discuss how this research tradition has been adapted by researchers to conduct classroom teaching experiments. In my concluding remarks, I address the need for researchers to develop models for teacher (...) learning. (shrink)