Successful adaptation of gait in healthy older adults during dual-task treadmill walking

Dual-task methods have been used to demonstrate increased prioritization of walking performance over cognition in healthy aging. This is expressed as greater dual-task costs in cognitive performance than in walking. However, other research shows that older adults can prioritize cognitive performance over walking when instructed to do so. We asked whether age-related cognitive prioritization would emerge by experimentally manipulating cognitive difficulty. Young and older adults performed mental arithmetic at two levels of difficulty, alone or while walking. Electromyography and footswitches were used to measure muscle activity and stride parameters. Under high cognitive load, older adults increased their stride time, stride length, and hamstring activity, while maintaining their cognitive performance. Young adults showed negligible dual-task costs in each domain. The older adults appeared to successfully adapt their stride in response to high cognitive demands. The results have implications for neural models of gait regulation, and age differences in task emphasis.     

Antenatal predictors and use of coping strategies in labour

Abstract

One aim of antenatal preparation is developing coping strategies for use (luring labour. However, the existing literature suggests that attendance at classes is not associated with lower pain or distress, possibly because receiving training cannot be assumed to be associated with subsequent practice.

This study aimed to assess whether attenders at classes actually used their taught strategies in their labours, whether use was associated with psychological benefits and whether antenatal measures could predict subsequent use. Concepts from the theories of planned behaviour and self efficacy were used to attempt to predict use of three types of coping strategy.

Use was high for breathing strategies but poor for relaxation and posture. Proportion of use of breathing and relaxation showed weak associations with lower fear. Whilst intentions did act as significant predictors for use of posture and relaxation only small proportions of the variance were accounted for and other antenatal measures showed little predictive capacity.

Reasons why women in labour may fail to take behavioural consequences from their antenatal beliefs are considered. Predicting health-related behaviours where maintenance rather than just initiation is involved may require greater consideration of intra-situational and emotional factors. Modifications of antenatal preparation to facilitate use of strategies are discussed.     

Attributions in a Spiritual Healing Context: An Archival Analysis of a 1920s Healing Movement

Research on religious attributions has been limited by a preoccupation with disentangling “religious” from “naturalistic” attributions and a failure to capture the attributions that people make in response to meaningful events. Thirty years of research has shown that even under optimum conditions religious attributions are rare compared to naturalistic ones. This research draws on unique archival materials comprising letters written to the Panacea Society containing self‐reported effects of a spiritual healing treatment based on water‐taking practices. This analysis examined attributions over time among a sample of letter writers (N = 19) from the 1920s using the Leeds Attributional Coding System to examine patterns of attributions that correspondents made in response to improvement and worsening of health outcomes. In line with previous research, religious attributions were more common for positive outcomes than negative outcomes. Contrary to previous research, religious attributions accounted for the majority of attributions made compared with nonreligious attributions. We discuss the implications for future research in studying attributions in real‐life meaningful settings and in expanding the repertoire of attributions to include religious ritual and community.     

MUTUAL ENHANCEMENT BETWEEN SCIENCE AND RELIGION: IN THE FOOTSTEPS OF THE EPIPHANY PHILOSOPHERS

This article describes some key features of the distinctive approach to issues in science and religion of the Epiphany Philosophers (EPs), and introduces a set of articles from a recent meeting. The objective of the EPs is not merely to establish harmonious coexistence between science and religion. Rather, they are dissatisfied with both, and have a reformist agenda. They see science as unduly constrained by arbitrary metaphysical assumptions, predominantly of an atheist kind, and wish to see it liberated from such constraints. They are also interested in the potential contribution of contemplative enquiry to scientific research. They see no reason why science should not engage with the transcendent, but they do not support any simplistic argument from scientific research to religious belief. They wish to see an approach to religion that is rooted more firmly in the contemplative path.     

An empirical approach to identify job duty-KSA linkages in managerial jobs: A case example

One-hundred and five managers and supervisors in the maintenance and engineering areas of a national aviation company rated job behaviors and personal requirements of their positions. Component analyses yielded factor structures of seven general job responsibilities and five skills, respectively. Consistent with previous research, skill importance varied as a function of level of management. Most importantly, the results of a series of regression analyses yielded empirical evidence of perceived behavior-skill associations in this sample of managerial positions. The uses of these empirical behavior-skill linkages are outlined.     

Evolutionary debunking arguments and the reliability of moral cognition

Recent debate in metaethics over evolutionary debunking arguments against morality has shown a tendency to abstract away from relevant empirical detail. Here, I engage the debate about Darwinian debunking of morality with relevant empirical issues. I present four conditions that must be met in order for it to be reasonable to expect an evolved cognitive faculty to be reliable: the environment, information, error, and tracking conditions. I then argue that these conditions are not met in the case of our evolved faculty for moral judgement.     

Dislocation dissociation in the intermetallic compound MoSi2

Abstract

The identity of dislocations which contribute to plastic deformation of polycrystalline MoSi₂ when compressed at 1400°C has been determined using transmission electron microscopy. It has been confirmed that dislocations with Burgers vectors lying parallel to ? 100 ? and ? 111 ? are activated in response to the applied stress. In addition, the deformation microstructure is characterized by the presence of networks containing dislocations with Burgers vectors parallel to ? 100], ? 110] and ? 111 ?. It has been shown that dislocations with Burgers vectors lying parallel to ? 111 ? are dissociated. A simple explanation has been developed to account for the occurrence of dissociation of particular dislocations, and on the basis of this model the dissociation is represented by

½? 111 ?→ ½? 111 ?+SISF+¼? 111 ?

where SISF stands for a superlattice intrinsic stacking fault. The SISF energy has been estimated from the separation of the partial dislocations to be about 261 mJ m^?2. Other observations of the dissociation of dislocations in MoSi₂ have been interpreted in terms of the model developed in the present work.     

Mobility of c dislocations in Ti3, Al

Abstract

The rôle of dislocations with Burgers vectors, b, given by b = [0001] during deformation of samples of the intermetallic compound Ti₃Al has been assessed. At room temperature, the experimental evidence is consistent with these dislocations being sessile, their density and morphology being similar to that in undeformed samples. In samples deformed at 650°C and above, it is concluded that motion of these dislocations is effected by dislocation climb. The line directions of the various segments of dislocations with b= [0001] are shown to be perpendicular to planes that contain sheets of Ti atoms, with an expected tendency to exhibit a high Peierls stress.     

Insomniacs' perceived lack of control over sleep

Abstract

It is widely assumed that insomniacs have poor self-efficacy for sleep and it is known that successful treatment is usually accompanied by improved self-efficacy. However, there has been little detailed investigation of insomniacs perceived lack of control over sleep. Insomniacs' perceived control over sleep itself is affected more than their perceived control over pre-sleep mental activity or physical tension. It was hypothesised that insomniacs would diverge from controls more in their sense that sleep was out of their control than that sleep was under their control, though this was not supported by the data. Also, there was no clear support for the idea that insomniacs' dissatisfaction with their control over sleep was the product of excessive aspirations for control. One factor that seems likely to contribute to insomniacs' lack of perceived control over sleep is that they do not have as lawful a pattern of expectations of sleep, based on their recent pattern of sleep, as normal sleepers do. Insomniacs, like non-insomniacs, were most likely to attribute poor sleep to external stresses and an over-active mind. Insomniacs showed a wide range of heightened emotional reactions to poor sleep. The implications of the results for self-regulation approaches to the treatment of insomnia are discussed.