Neuropsychological and neurophysiological effects of strengthening exercise for early dementia: A pilot study

ABSTRACT

Research demonstrates a positive effect of aerobic exercise on cognitive functioning in older adults. Unfortunately, aerobic exercise is often contraindicated for older adults due to cardiovascular and functional limitations. Low-intensity strengthening exercise may offer a practical alternative, but the neuropsychological benefits and potential neurophysiological mechanisms are less well understood. The current study evaluated the effects of a 10-week strengthening exercise intervention on cognitive functioning and EEG in a sample of 13 older adults with early dementia, and 9 normative controls. Results revealed beneficial effects of strengthening exercise on verbal memory coupled with frontal beta and delta power asymmetries and N200 amplitude asymmetry. Results point to increased cognitive efficiency following 10 weeks of strengthening exercise. The findings suggest it is feasible to conduct a strengthening intervention with early dementia patients, and to gather neuropsychological and neurophysiological data to evaluate outcomes. Strengthening exercise may serve as a useful alternative to aerobic exercise.     

Acquisition of matching to sample via mediated transfer

Two severely retarded Down's-syndrome boys learned a matching-to-sample performance through mediated transfer. The transfer paradigm involved three sets of stimuli, one auditory set (A) and two visual sets (B and C). The subjects were taught directly to do B-A and C-B matching, but experienced no direct association between C and A. They acquired the ability to do C-A matching without having been taught that performance directly. They also learned indirectly to name some of the visual stimuli, but naming was apparently not the mediator in the emergent C-A matching. The use of words and letters as stimuli highlighted the possible relevance of mediated associations in the indirect acquisition of elementary reading comprehension and oral reading. The acquisition of matching via mediated transfer also raised some new considerations concerning the role of coding responses in arbitrary matching to sample.     

Metaphor: a paradigm for practice-based research into 'career'

This article describes the development of a practice-based methodology for researching 'career' in constructive and critical terms. It begins by suggesting that 'career' theories, both new and old, continue to be confounded by the dualism of human agency and social structure. An argument is then presented to suggest that metaphor provides a means of understanding the reflexive relationship between human actions and social systems. Based on a synthesis of constructivist and critical theory perspectives, a detailed exposition of metaphor as a paradigm for practice-based research is then provided. The emerging methodological implications for researching 'career' are then considered and an example is given of constructive and critical research in action. The article concludes by relating the methodology to careers guidance practice.     

Effects of abusive supervision on employees’ innovative behavior: The role of job insecurity and locus of control

Drawing on the Conservation of Resources Theory by Hobfoll, we examined the relationships between abusive supervision, job insecurity, locus of control, and employees’ innovative behavior. Using self‐reported data collected from employees among four enterprises in China (N = 641), we found that abusive supervision was positively correlated with job insecurity. In contrast, both job insecurity and abusive supervision were negatively correlated with employees’ innovative behavior, with the impact of abusive supervision on innovative behavior being mediated by its effect on job insecurity. Having an external locus of control that served as a buffering factor for employees, mitigating the relationship between abusive supervision and job insecurity. These findings complement the existing research on the impacts of abusive leadership, providing practical information for enterprises on how to enhance levels of innovation and vitality among employees.     

On the Psychological Function of Nationalistic “Whitelash”

A noticeable feature of the political discourse accompanying the rise of nationalism in white‐majority countries is that white people fare worse than other ethnic groups in their societies. However, it is unclear based on the extant literature why group‐based relative deprivation (GRD) would correlate with majority‐group nationalism. Here, we propose that the psychological function of nationalism for majority‐group members lies in its ability to assuage the negative feelings arising from GRD. Accordingly, in a New Zealand national probability sample (N = 15,607), we found that GRD among whites was negatively associated with well‐being. However, we also found an opposing indirect association mediated by nationalism. GRD was associated with higher nationalism, which was in turn associated with higher well‐being. These findings suggest that endorsing beliefs about national superiority is one way a nation’s dominant ethnic group can cope with the negative psychological consequences of perceiving that their group is deprived.     

Withstanding the test of time: Multisensory cues improve the delayed retention of incidental learning

Multisensory tools are commonly employed within educational settings (e.g. Carter & Stephenson, 2012 ), and there is a growing body of literature advocating the benefits of presenting children with multisensory information over unisensory cues for learning (Baker & Jordan, 2015 ; Jordan & Baker, 2011 ). This is even the case when the informative cues are only arbitrarily related (Broadbent, White, Mareschal, & Kirkham, 2017 ). However, the delayed retention of learning following exposure to multisensory compared to unisensory cues has not been evaluated, and has important implications for the utility of multisensory educational tools. This study examined the retention of incidental categorical learning in 5‐, 7‐ and 9‐year‐olds (N = 181) using either unisensory or multisensory cues. Results found significantly greater retention of learning following multisensory cue exposure than with unisensory information when category knowledge was tested following a 24‐hour period of delay. No age‐related changes were found, suggesting that multisensory information can facilitate the retention of learning across this age range.     

Teaching Islam in contemporary America: Digital ethnography and the affective challenges of Islamic studies pedagogy

In this article we address the affective dimensions and challenges of teaching about Islam and Islamic studies in the current American political and cultural environment and make two related arguments. First, we explain how the impact of certain kinds of digital media in the past few years has heightened the association of Islam with violence in the minds of many Americans, leading to a classroom affective environment characterized by the “posttraumatic” experience of knowledge about Islam. Second, we argue that the pedagogical use of digital media as a tool for ethnographic and empathic engagement with individual Muslim lives can help meet this particular teaching challenge. We show how the pedagogical employment of digital ethnography can turn the affective power of digital media into a positive learning tool, and model its responsible social and intellectual use.     

Over‐selective Responding in a Diagnostic Judgment Task

Medical diagnoses are often made on the basis of the presence of multiple symptoms. However, little is known about how the presence of multiple simultaneous symptoms may influence a bias in determining which symptoms are identified, in part due to a lack of an experimental analogue of this process. The current article presents a laboratory analogue of this process and explores whether over‐selectivity influences the ability to identify symptoms indicative of particular illnesses. In two experiments, participants completed a diagnosis task that required them to rate the degree to which symptoms predicted illnesses, with predictor symptoms being presented either singly or in compound. In both experiments, over‐selectivity was observed; one symptom of the compound received lower ratings, compared to the other element of the compound and the single predictor, while the other component received comparable ratings with the element. These findings are discussed in relation to associative accounts of over‐selectivity and as a procedure to study biases in medical decision making.Copyright © 2017 John Wiley & Sons, Ltd.