Discrimination of amount of spinal flexion for movements made with and without vision after lumbar disc replacement

Discrimination of differences between small lumbar flexion movements made when standing may differ depending on whether vision is available. Dependence on general vision during trunk movements may be increased following surgery, in which an intervertebral disc is replaced with a prosthetic disc. This study investigated whether the availability of vision changed discrimination of small differences in lumbar forward flexion movement when standing for patients with lumbar disc replacement and healthy peers. 20 volunteers without a history of back pain and 20 with disc replacement undertook a 100-trial sequence of forward flexion movements to a set of physical stops, making an absolute judgement as to the position after each movement. General (nontarget) vision during the movement was available or removed randomly trial by trial. Availability of vision did not affect discrimination of flexion movements of the lumbar spine either in normal healthy individuals or those with disc replacement.     

Father contributions to cortisol responses in infancy and toddlerhood

The current study is one of the first prospective examinations of longitudinal associations between observed father caregiving behaviors and child cortisol reactivity and regulation in response to emotional arousal. Observations of father and mother caregiving behaviors and child cortisol levels in response to challenges at 7 months and 24 months of child age were collected. Analyses were based on a subsample of children from the Family Life Project who lived with both their biological mothers and fathers and for whom there was at least partial cortisol data (7 months: n = 717; 24 months: n = 579). At the challenge conducted at 7 months of child age, 49.0% of the sample were girls; racial composition of the sample was 25.8% African American and 74.2% European American. At the challenge conducted at 24 months of child age 49.9% of the sample were girls; racial composition was 24.7% African American and 75.3% European American. We conducted analyses across assessment points simultaneously using mixed linear modeling for repeated measures data to test for differential effects of fathering across infancy and toddlerhood. Concurrent measures of father negativity were positively associated with greater increases in child cortisol levels in response to emotion challenge at 7 months (p = .01) and with higher overall levels of cortisol at 24 months (p < .001). However, there was no evidence that father caregiving during infancy independently predicted later cortisol activity during toddlerhood.     

Effects of aging and IQ on item and associative memory

The effects of aging and IQ on performance were examined in 4 memory tasks: item recognition, associative recognition, cued recall, and free recall. For item and associative recognition, accuracy and the response time (RT) distributions for correct and error responses were explained by Ratcliff's (1978) diffusion model at the level of individual participants. The values of the components of processing identified by the model for the recognition tasks, as well as accuracy for cued and free recall, were compared across levels of IQ (ranging from 85 to 140) and age (college age, 60-74 years old, and 75-90 years old). IQ had large effects on drift rate in recognition and recall performance, except for the oldest participants with some measures near floor. Drift rates in the recognition tasks, accuracy in recall, and IQ all correlated strongly. However, there was a small decline in drift rates for item recognition and a large decline for associative recognition and cued recall accuracy (70%). In contrast, there were large effects of age on boundary separation and nondecision time (which correlated across tasks) but small effects of IQ. The implications of these results for single- and dual-process models of item recognition are discussed, and it is concluded that models that deal with both RTs and accuracy are subject to many more constraints than are models that deal with only one of these measures. Overall, the results of the study show a complicated but interpretable pattern of interactions that present important targets for modeling.     

Sleeping Beauty meets Monday

The Sleeping Beauty problem—first presented by A. Elga in a philosophical context—has captured much attention. The problem, we contend, is more aptly regarded as a paradox: apparently, there are cases where one ought to change one’s credence in an event’s taking place even though one gains no new information or evidence, or alternatively, one ought to have a credence other than 1/2 in the outcome of a future coin toss even though one knows that the coin is fair. In this paper we argue for two claims. First, that Sleeping Beauty does gain potentially new relevant information upon waking up on Monday. Second, his credence shift is warranted provided it accords with a calculation that is a result of conditionalization on the relevant information: “this day is an experiment waking day” (a day within the experiment on which one is woken up). Since Sleeping Beauty knows what days d could refer to, he can calculate the probability that the referred to waking day is a Monday or a Tuesday providing an adequate resolution of the paradox.     

Evaluating methods for approximating stochastic differential equations

Models of decision making and response time (RT) are often formulated using stochastic differential equations (SDEs). Researchers often investigate these models using a simple Monte Carlo method based on Euler's method for solving ordinary differential equations. The accuracy of Euler's method is investigated and compared to the performance of more complex simulation methods. The more complex methods for solving SDEs yielded no improvement in accuracy over the Euler method. However, the matrix method proposed by Diederich and Busemeyer (2003) yielded significant improvements. The accuracy of all methods depended critically on the size of the approximating time step. The large (∼10 ms) step sizes often used by psychological researchers resulted in large and systematic errors in evaluating RT distributions.     

A Religion for an Age of Science

The period 800–200 B.C.E. has been called an axial period or age because it was a period of major technological and cultural change that led to the development of new worldviews, which in turn called for and led to the emergence of the current major world religious traditions. The world is now in the midst of another period of major global scientific, technological, and cultural change that is leading to the development of a new global worldview. In this worldview, the cosmos is taken to be more like an activity than a thing—more like an emergent complex of interrelated and interactive doing in space–time than a created complex of beings in space and time–and its complexity and space—time scale are understood to be enormously greater than heretofore supposed.
These changes in worldview call for changes in theology, religion, and ethics. Most workers in the field of science and religion are heeding this call by attempting to reconcile traditional religious concepts with the new scientific concepts. Others, however, have become convinced that the new worldview differs so radically from the previous ones as to mark a new axial age, which calls for a new, post-traditional theology, religion, and ethics, with a theos that is more like an activator of doing than a ground of being, and with meaning and purpose achieved more by a quality of doing than a quantity or quality of being.     

Teaching Responsible Research and Innovation: A Phronetic Perspective

Science and Engineering Ethics - Across the European research area and beyond, efforts are being mobilized to align research and innovation processes and products with societal values and needs,...     

Corruption,Trust, Inclusion and Cohesion in North Africa and the Middle East

Corruption provokes much anger in the Middle East and North African (MENA) and was important in the Arab Uprisings; it was government corruption that sparked the greatest anger among the population. The argument of this Report is (a) that corruption is a major and obvious breach of trust, (b) that the same is true for ‘civil’ corruption – ‘wasta’ in employment, business corruption – (c) that as well as not trusting their government and its institutions, MENA residents do not trust each other either, to the detriment of maintaining functional nation states without coercion, and (d) that corruption is a special case of breach of the Rule of Law which is essential for a decent society. The initial focus on corruption leads to consideration of what people think they can reasonably expect from government and from each other. Ultimately, corruption divides the society into those who extort bribes or dispense favours and those who are required to pay bribes and are excluded from favour – in other words, there is a breakdown of social inclusion. Further, it destroys trust between people and trust in social institutions, which breaks the cords that hold modern societies together - it is an attack on social cohesion. The article is based mainly on the Arab Transformations Survey, carried out in six developing MENA countries in 2014, three years after the ‘Arab Spring’.