Changing Types: Information Dynamics for Qualitative Type Spaces

Many different approaches to describing the players’ knowledge and beliefs can be found in the literature on the epistemic foundations of game theory. We focus here on non-probabilistic approaches. The two most prominent are the so-called Kripkeor Aumann- structures and knowledge structures (non-probabilistic variants of Harsanyi type spaces). Much of the recent work on Kripke structures has focused on dynamic extensions and simple ways of incorporating these. We argue that many of these ideas can be applied to knowledge structures as well. Our main result characterizes precisely when one type can be transformed into another type by a specific type of information update. Our work in this paper suggest that it would be interesting to pursue a theory of “information dynamics” for knowledge structures (and eventually Harsanyi type spaces).     

Doing the Right Thing: A Qualitative Investigation of Retractions Due to Unintentional Error

Retractions solicited by authors following the discovery of an unintentional error—what we henceforth call a “self-retraction”—are a new phenomenon of growing importance, about which very little is known. Here we present results of a small qualitative study aimed at gaining preliminary insights about circumstances, motivations and beliefs that accompanied the experience of a self-retraction. We identified retraction notes that unambiguously reported an honest error and that had been published between the years 2010 and 2015. We limited our sample to retractions with at least one co-author based in the Netherlands, Belgium, United Kingdom, Germany or a Scandinavian country, and we invited these authors to a semi-structured interview. Fourteen authors accepted our invitation. Contrary to our initial assumptions, most of our interviewees had not originally intended to retract their paper. They had contacted the journal to request a correction and the decision to retract had been made by journal editors. All interviewees reported that having to retract their own publication made them concerned for their scientific reputation and career, often causing considerable stress and anxiety. Interviewees also encountered difficulties in communicating with the journal and recalled other procedural issues that had unnecessarily slowed down the process of self-retraction. Intriguingly, however, all interviewees reported how, contrary to their own expectations, the self-retraction had brought no damage to their reputation and in some cases had actually improved it. We also examined the ethical motivations that interviewees ascribed, retrospectively, to their actions and found that such motivations included a combination of moral and prudential (i.e. pragmatic) considerations. These preliminary results suggest that scientists would welcome innovations to facilitate the process of self-retraction.     

A Model-Based Approach to Understanding Apraxia in Corticobasal Syndrome

Limb apraxia is a neurological disorder of higher cognitive function characterized by an inability to perform purposeful skilled movements and not attributable to an elementary sensorimotor dysfunction or comprehension difficulty. Corticobasal Syndrome (CBS) is an akinetic rigid syndrome with asymmetric onset and progression with at least one basal ganglia feature (rigidity, limb dystonia or myoclonus) and one cortical feature (limb apraxia, alien hand syndrome or cortical sensory loss). Even though limb apraxia is highly prevalent in CBS (70–80%), very few studies have examined the performance of CBS patients on praxis measures in detail. This review aims to (1) briefly summarize the clinical, neuroanatomical and pathological findings in CBS, (2) briefly outline what limb apraxia is and how it is assessed, (3) to comprehensively review the literature on limb apraxia in CBS to date and (4) to briefly summarize the literature on other forms of apraxia, such as limb-kinetic apraxia and buccofacial apraxia. Overall, the goal of the review is to bring a model-based perspective to the findings available in the literature to date on limb apraxia in CBS.     

Apraxia in corticobasal degeneration.

Corticobasal degeneration (CBD) is a degenerative disease that often presents with an asymmetric progressive ideomotor limb apraxia. Some apraxic subjects may fail to perform skilled purposive movements on command because they have lost the memories or representations that specify how these movements should be performed (representational deficit). In contrast, other apraxic subjects may have the movement representations but are unable to utilize the information contained in them to execute skilled purposive movements (production-execution deficit). To learn if the apraxic deficit in CBD is induced by a representational or a production-execution deficit, we tested three nondemented subjects with CBD on tasks requiring production of meaningful or meaningless gestures to command, gesture imitation, gesture discrimination, and novel gesture learning. A fourth subject with incomplete data also is presented. The results suggest that the apraxia associated with CBD is initially induced by a production-execution defect with relative sparing of the movement representations.     

Apraxia differs in corticobasal degeneration and left-parietal stroke: A case study.

Corticobasal degeneration (CBD) is a progressive disorder characterized by both cortical and basal ganglia dysfunction such as asymmetrical apraxia, and akinetic rigidity, involuntary movements, and cortical sensory loss. Although apraxia is a key finding for the differential diagnosis of CBD, it has not been determined whether the features of apraxia seen in subjects with CBD are similar to those features exhibited by subjects with left-hemisphere damage from stroke. Therefore, for both clinical purposes and in order to better understand the brain mechanisms that lead to apraxia in CBD, we studied praxis in a patient with CBD and compared him to patients who are apraxic from left-parietal strokes. We used three-dimensional movement analyses to compare the features of apraxic movement. This subject with CBD was a dentist whose initial complaint had been that he "forgot" how to use his tools in the mouths of his patients. Analyses were performed on the trajectories made when using a knife to actually slice bread, and when repetitively gesturing slicing made to verbal command. Movements of the left hand, wrist, elbow, and shoulder were digitized in 3-D space. Although the CBD subject was clearly apraxic, the features of his apraxia differed markedly from those of the subjects with lesions in the left parietal lobe. For movements to command, the CBD subject showed joint coordination deficits, but his wrist trajectories were produced in the appropriate spatial plane, were correctly restricted to a single plane, and, like control subjects, were linear in path shape. However, when he was actually manipulating the tool and object, all of these aspects of his trajectories became impaired. In contrast, the deficits of the apraxic subjects with left-parietal damage were most pronounced to verbal command with their movements improving slightly although remaining impaired during actual tool and object manipulation. Unlike patients with parietal strokes, patients with CBD have degeneration in several systems and perhaps deficits in these other areas may account for the differences in praxic behavior.     

Loss of Faith: A Qualitative Analysis of Jewish Nonbelievers

Through in-depth interviews with 9 adult Jewish nonbelievers, this study explored the onset of their nonbelief and the degree of their spiritual well-being and compares these results with 9 Jewish believers. Findings indicate a need to revise current theories of religious development and also suggest the potential value of counseling intervention for these nonbelievers.     

Satisfactions and Regrets of Midlife Parents: A Qualitative Analysis

The study examined the satisfactions and regrets of midlife parents at a specific family life-cycle milestone, their child’s graduation from high school. The purpose was to compare mothers’ and fathers’ appraisals of the gains and losses associated with this developmental transition and turning point in their parenting roles. A total of 260 parents (147 mothers; 113 fathers) who had a child graduating from high school responded in writing to open-ended questions regarding their satisfactions and regrets at this stage of their lives. Responses were coded to identify themes salient to these parents. Results indicate that both mothers and fathers are aware of both the gains and losses at this time in their family life cycle, but they differed in how they expect to be affected by the transition. Mothers’ responses suggest that they are anticipating and planning for the transition. Fathers’ responses suggest they are less aware of the personal implications of this family transition and are less prepared for its emotional impact.     

Coping Strategies of Adults with High-Functioning Autism: A Qualitative Analysis

The objective of this research is to study, via a qualitative and exploratory approach, the coping strategies used by adults with autism and with no intellectual impairment. Semi-directive interviews were carried out with 31 adults diagnosed with Asperger’s syndrome or high-functioning autism (HFA). The data were analysed using an open coding system. Eight coping strategies were identified: special interests, militancy, diagnosis, seeking support from atypical friends, seeking support from animals, normalisation, intellectualisation, and humour. The practical and theoretical implications of the results are discussed in relation to the existing literature on this subject. A new approach is proposed in which special interests are seen as a resource and not as a symptom.     

A Compulsive Buying Case: A Qualitative Analysis by the Grounded Theory Method

This study analyzed a case of compulsive buying based on the grounded theory method. The client was a 24 year-old female Korean student who showed compulsive buying and excessive credit card use. The family therapy was performed between March 2001 and May 2004 in Korea. This study used the software “Atlas.ti,” producing 121 open codings and seven axis categories which included the following: (1) communication issues with friends or family members, (2) sibling relationships, (3) mother’s parenting, (4) interparental relationships, (5) mother’s communication style, (6) stress, and (7) compulsive buying and credit card use. This study presented the graphical network among these categories in order to show the effectiveness of family therapy.This work was supported by the Soongsil University Fund.     

Ideomotor compatibility in the psychological refractory period effect: 29 years of oversimplification

Four experiments examined whether the psychological refractory period (PRP) effect can be eliminated with ideomotor compatible (IM) but not stimulus-response compatible (SR) tasks, as reported by A. G. Greenwald and H. G. Shulman (1973). Their tasks were used: a left or right movement to a left- or right-pointing arrow (IM) or to the word left or right (SR) for Task 1; saying "A" or "B" (IM) or "1" or "2" (SR) to an auditory A or B for Task 2. The stimulus onset asynchronies were 0, 100, 200, 300, 500, and 1,000 ms in Experiment 1, and only 0, 100, 200, and 1,000 ms in Experiments 2-4. The arrow was in the center of the screen in Experiments 1-3 and to the left or right in Experiment 4. As in Greenwald and Shulman's Experiment 2, the instructions stated that most often the 2 stimuli would be presented simultaneously. A PRP effect was obtained in all conditions, most likely because response-selection decisions are required even for IM tasks.     

Exploring Debriefing in Sports: A Qualitative Perspective

This study explored athletes’ and coaches’ experience of debriefing. Six coaches and 11 athletes (M age = 21.09, SD = 3.30) of different competitive levels and sports participated in semi-structured interviews. Participants’ experiences reflected that debriefing was generally employed for performance evaluation and learning purposes. Psychological benefits of debriefing were seen as a by-product rather than an aim of the process. The power differential in some coach-athlete relationships was identified as limiting debriefing efficacy. From an applied perspective, the results highlight the need to increase athletes’ active participation in the debriefing process and to improve coaches’ and athletes’ understanding of psychological recovery.     

Apraxia in a patient with atypical cerebral dominance

Liepmann postulated that the left hemisphere of right-handed persons contains the "movement formulas" that control purposeful skilled movements of the limbs on both sides of the body. Accordingly, in right-handers apraxia should follow damage to the left hemisphere, whereas right hemisphere damage should not lead to apraxia. Although this is generally true, we recently examined a right-handed man who after a right hemispheric stroke became aphasic and apraxic with his nonparalyzed right hand. Our observations suggest that the right hemisphere of this right-handed man made a critical contribution to the planning and execution of skilled movements. This case provides evidence that right-handers should not be considered a homogeneous group in terms of cerebral motor dominance and that contrary to Liepmann's postulate, hemispheric dominance for the control of skilled movements does not entirely determine handedness.     

Gender Bias in the Evaluation of Female Faculty at The Citadel: A Qualitative Analysis

The purpose of this study was to investigate the possibility of gender bias in student ratings of female faculty at The Citadel. Four (Caucasian) female faculty members, one at each level of academic rank, and four (Caucasian) male cadets were interviewed to determine their views on bias in the instructional process, especially with regard to ratings of faculty by students. From the data we concluded that there is a contradiction between beliefs about gender bias and the actual presence of bias for both faculty and students. Women are subjected to a double standard, and in the military setting of The Citadel, nontenure track female faculty are doubly penalized. Faculty women believe gender bias is part of the institutional culture, and contrapower harassment in ratings of female faculty by male students is likely.     

Margins for Error: A Reply

I address Peter Mott's 'Margins for Error and the Sorites Paradox' ( The Philosophical Quarterly , 48 (1998), pp. 494–503). Mott criticizes my account of inexact knowledge, on which it satisfies margin for error principles of the form 'If one knows in a given case, one avoids false belief in sufficiently similar cases'. Mott's arguments are shown to be fallacious because they ignore the fact that our knowledge of inexact knowledge is itself inexact. In the examples discussed, the first-level inexact knowledge is perceptual. Since my defence of an epistemicist theory of vagueness explains our ignorance of truth-values in borderline cases as the result of knowledge the inexactness of which has a conceptual source, the paper also contributes to the defence of epistemicism about vagueness.     

People Living with Inflammatory Bowel Disease Want Multidisciplinary Healthcare: A Qualitative Content Analysis

This study reports on the preferences of people with inflammatory bowel disease (IBD) for their healthcare. Overall, 477 people with IBD responded to an open-ended survey question within a larger study. We qualitatively content-analysed these responses with open coding using NVivo. Respondents expressed a desire for (1) better communication, (2) multidisciplinary care, (3) better treatment, services and specialist care, (4) whole person care, (5) health promotion, (6) proactive healthcare, (7) fewer administrative issues and (8) improved hospital experience. Patients with IBD want patient-centred, multidisciplinary care. Healthcare professionals should facilitate patients’ access to proactive care.