Development of spatial memory and spatial orientation in preschoolers and primary school children

The present study addresses the question of what kind of information children use when orientating in new environments, if given proximal and distal landmarks, and how spatial memory develops in the investigated age groups. Ten 5-year-old, ten 7-year-old and ten 10-year-old children were presented with the ‘Kiel Locomotor Maze’, containing features of the Radial Arm Maze and the Morris Water Maze, in order to assess spatial memory and orientation. Children had to learn to approach baited locations only. Task difficulty was equated with respect to the children's age. Training was given until the children reached criterion. During testing, the maze configuration and response requirements were systematically altered, including response rotation, cue rotation, cue deletion and response rotation with cue deletion in order to assess the spatial strategies used by the children. During training and testing, working-memory errors (WM), reference-memory errors (RM) and working-reference memory errors (WR) were recorded. As expected, no difference between age groups appeared during training, thus confirming comparable task difficulty across age groups. During testing, age groups differed significantly with regard to the orientation strategy used. The 5-year-olds were bound to a cue strategy, orientating towards local, proximal cues. The 10-year-olds mastered all tasks, thus displaying a place strategy, being able to use distal cues for orientation, and were even able to do so after being rotated 180°. The 7-year-olds proved to be at an age of transition: five of them were bound to a cue strategy, five children were able to adopt a place strategy. The differences in the orientation strategies used by children of different age groups was reflected by the sum of errors they made, also by RM. WM were found to be rare, especially in older children. We conclude that preschoolers use a cue strategy, that the development of place strategies occurs during primary school age and seems to be complete by the age of 10 years.     

Slim Futures and the Fat Pill: Civic Imaginations of Innovation and Governance in an Engagement Setting

Innovation politics is seen as an ever more central area of public policy, and as a key means for shaping societal futures. Particularly in Europe, with its history of controversial public debates about innovations, the idea that scientific progress is automatically equated with societal progress seems hard to sustain. Broader public participation within techno-scientific governance seems necessary; though who is to participate in which form often remains unclear. Increasingly, when the innovation process is discussed in both policy and academia, the question of when public engagement should take place in the innovation process is addressed using common models such as ‘upstream engagement’. However, these discussions about public engagement often assume a top-down approach, and pay little attention to citizens' perspectives. To address this gap in the literature, this article will ask the following questions: what tacit understandings of techno-scientific innovation and governance do citizens have; and how do they relate their understandings of the form, structure and dynamics of these innovation processes to their visions of governance and participation? How do specific cultural forms of conceptualising innovation open up or close down particular possibilities of governance and public participation, hence privileging the involvement of certain actors and not others? To address these questions, we analyse the discussions in a long-term public engagement setting involving both genome scientists and citizens in Austria.     

Perceptual control models of pursuit manual tracking demonstrate individual specificity and parameter consistency

Attention, Perception, & Psychophysics - Computational models that simulate individuals’ movements in pursuit-tracking tasks have been used to elucidate mechanisms of human motor control....     

Naturalist Semantics and the Appeal to Structure

We need not accommodate facts about meaning if Quine is right about the indeterminacy of subsentential expressions; there can be no such facts to accommodate. Evans argued that Quine's approach overlooks the ways speakers use predication to endow their use of subsentential expressions with the necessary determinacy. This paper offers a critical assessment of the debate in relation to current arguments about naturalism and shows how Evans's response depends on a basic claim that turns out to be false.     

Human Decisions in Moral Dilemmas are Largely Described by Utilitarianism: Virtual Car Driving Study Provides Guidelines for Autonomous Driving Vehicles

Science and Engineering Ethics - Ethical thought experiments such as the trolley dilemma have been investigated extensively in the past, showing that humans act in utilitarian ways, trying to cause...     

Prediction in infants and adults: A pupillometry study

Adults use both bottom‐up sensory inputs and top‐down signals to generate predictions about future sensory inputs. Infants have also been shown to make predictions with simple stimuli and recent work has suggested top‐down processing is available early in infancy. However, it is unknown whether this indicates that top‐down prediction is an ability that is continuous across the lifespan or whether an infant's ability to predict is different from an adult's, qualitatively or quantitatively. We employed pupillometry to provide a direct comparison of prediction abilities across these disparate age groups. Pupil dilation response (PDR) was measured in 6‐month olds and adults as they completed an identical implicit learning task designed to help learn associations between sounds and pictures. We found significantly larger PDR for visual omission trials (i.e. trials that violated participants’ predictions without the presentation of new stimuli to control for bottom‐up signals) compared to visual present trials (i.e. trials that confirmed participants’ predictions) in both age groups. Furthermore, a computational learning model that is closely linked to prediction error (Rescorla‐Wagner model) demonstrated similar learning trajectories suggesting a continuity of predictive capacity and learning across the two age groups.     

Corporeal Objects and the Interdependence of Perception and Action

This paper is about how action and perception are related in self–awareness. The main positive claim is that bodily awareness may consist in perceptual experiences that are sufficient to provide corporeal objects with introspective self–awareness. The short–term goal is to examine the grounds and motivations for strong versions of the claim that the self–awareness of corporeal objects is dependent on the exercise of their agency. As examples of 'patient perceivers' show, we should not underestimate the resources that perceptual experience alone offers to corporeal selves.     

INCENSE AND INSENSIBILITY: AUSTIN ON THE 'NON-SERIOUSNESS' OF POETRY

What is at stake when J. L. Austin calls poetry ‘non‐serious’, and sidelines it in his speech act theory? (I). Standard explanations polarize sharply along party lines: poets (e.g. Geoffrey Hill) and critics (e.g. Christopher Ricks) are incensed, while philosophers (e.g. P. F. Strawson; John Searle) deny cause (II). Neither line is consistent with Austin's remarks, whose allusions to Plato, Aristotle and Frege are insufficiently noted (III). What Austin thinks is at stake is confusion, which he corrects apparently to the advantage of poets (IV). But what is actually at stake is the possibility of commitment and poetic integrity. We should reject what Austin offers (V). ¹ 1 I am grateful to Stephen Mulhall, whose paper ‘Deconstruction and the Ordinary’ prompted me to think about these things.