The influence of the human TMJ eminence inclination on predicted masticatory muscle forces

Aim of this paper was to investigate the change in masticatory muscle forces and temporomandibular joint (TMJ) reaction forces simulated by inverse dynamics when the steepness of the anterior fossa slope was varied. We used the model by de Zee et al. (2007) created in AnyBody™. The model was equipped with 24 musculotendon actuators. Mandibular movement was governed by the trajectory of the incisal point. The TMJ was modelled as a planar constraint canted 5° medially and the caudal inclination relative to the occlusal plane was varied from 10° to 70°. Our models showed that for the two simulated movements (empty chewing and unilateral clenching) the joint reaction forces were smallest for the eminence inclination of 30° and 40° and highest for 70°. The muscle forces were relatively insensitive to change of the eminence inclination for the angles between 20° and 50°. This did not hold for the pterygoid muscle, for which the muscle forces increased continually with increasing fossa inclination. For empty chewing the muscle force reached smaller values than for clenching. During clenching, the muscle forces changed by up to 200 N.     

Areas of Interest as a Signal Detection Problem in Behavioral Eye‐Tracking Research

Decision researchers frequently analyze attention to individual objects to test hypotheses about underlying cognitive processes. Generally, fixations are assigned to objects using a method known as area of interest (AOI). Ideally, an AOI includes all fixations belonging to an object while fixations to other objects are excluded. Unfortunately, due to measurement inaccuracy and insufficient distance between objects, the distributions of fixations to objects may overlap, resulting in a signal detection problem. If the AOI is to include all fixations to an object, it will also likely include fixations belonging to other objects (false positives). In a survey, we find that many researchers report testing multiple AOI sizes when performing analyses, presumably trying to balance the proportion of true and false positive fixations. To test whether AOI size influences the measurement of object attention and conclusions drawn about cognitive processes, we reanalyze four published studies and conduct a fifth tailored to our purpose. We find that in studies in which we expected overlapping fixation distributions, analyses benefited from smaller AOI sizes (0° visual angle margin). In studies where we expected no overlap, analyses benefited from larger AOI sizes (>.5° visual angle margins). We conclude with a guideline for the use of AOIs in behavioral eye‐tracking research. Copyright © 2015 John Wiley & Sons, Ltd.     

The end of theoretical orientations?

Theoretical orientation is the most pervasive organizing device in psychology. Ideas, books, people, therapies, and other salient matters are frequently classified into psychodynamic, behavioral, humanistic, cognitive, or other orientation categories. The continued prominence of theoretical-orientation classification belies a breakdown in its applicability to contemporary psychology. Psychotherapy remains a stronghold. However, with internal and external forces endorsing particular approaches, theoretically-based practices will be forced to yield to evidence-based ones. The final dismantling of traditional theoretical categories by evidence-based practice standards paradoxically provides a hopeful impetus to otherwise arrested theoretical development. Manifest avowed theoretical orientation is distinguished from a latent theoretical-orientation construct, and the ways a new kind of meta-theory of therapy will reduce the naivete and increase the applicability of clinical research is discussed.     

职业精神和医患关系

通过调查发现,外科医生在提供做决策的信息的问题上执行得较好;有些医生无论错误多么严重也不会把医疗错误披露出来;但是能够公开医生的经济奖励,这样医生的信任不但没有被损害,相反医生和医生团体的信任和忠诚却增强了。从知情决策、医疗错误的披露和利益冲突三个方面展示职业精神对医患关系产生的影响,并为职业精神的发展提供了新视角。     

Relations between general goal orientations and task-specific self-appraisals

Abstract:   The purpose of the present study was to examine the influence of goal orientations on ninth-grade students' (54 girls and 55 boys) task-specific appraisals (i.e., anticipated interest, self-efficacy, test anxiety, and physical symptoms) and subsequent task performance. The results of structural equation modeling showed that different goal orientations had different effects on task-specific appraisals. In addition, task performance was directly influenced by self-efficacy and physical symptoms, whereas the goal orientation served as a predictor of task performance indirectly through task-specific appraisals. Students' posttask estimation of success and involvement were differently predicted by the pretask appraisal and actual task performance. Thus self-appraisals that students experience after performing the task are not only influenced by the actual performance, but also by the task-related appraisal they form before the task, which is partially determined by their goal orientations. Cluster analysis revealed students with multiple goals, in whom learning and performance goals can work together to facilitate performance and motivation.     

Talking about interest: exploring the role of social interaction for regulating motivation and the interest experience

The Self-Regulation of Motivation Model suggests that the experience of interest is an important source of human motivation and that people often strategically regulate the experience of interest. Previous work based on this model suggests that the social context may influence this process at multiple points. The present research focuses on whether talking to others about an activity experience is one means by which individuals evaluate how interesting that activity is. In Study 1 college students completed questionnaires that asked about real life experiences where working on an activity was more interesting because they worked with others. They described experiences that occurred first in any domain, and then that occurred specifically in the school domain. Results suggested that the more students talked with others about the activity after it happened the more they reported greater interest in the activity after the conversations. In the school domain, this was especially true for Latinos and for individuals who scored higher on the Relational Self-Construal scale. Study 2 employed a lab paradigm to control for the task that individuals talked to others about and to examine whether the nature of listeners’ reactions influenced the speaker’s interest even after the study was ostensibly over. First, replicating Pasupathi and Rich (2005, ‘Inattentive listening undermines self-verification in personal storytelling’, Journal of Personality 73, pp. 1051–1086) college students who talked to a distracted friend about a computer game during the lab session reported a significant drop in interest relative to those who talked to attentive friends, regardless of whether the attentive listeners agreed or disagreed with participants. Importantly, interest ratings at a 4–6 week follow-up were affected by the perceived responsiveness of listeners during spontaneous conversational retellings outside the lab, controlling for interest levels at the end of the lab session. Taken together, results suggest that social interaction plays an important role in regulating activity interest even beyond the immediate activity experience.     

The Infertility Resilience Model: Assessing Individual,Couple, and External Predictive Factors

Resilience in couples experiencing infertility is critical to decrease the impact of infertility-related stress and sustain positive interactions and collective perceptions in couples. The Infertility Resilience Model (IRM) presented in this article provides a framework within which various individual, couple, and external factors that influence resilience can be understood. Although numerous approaches have been applied to infertility, few of them have examined resilience and the interconnections between individual, couple, and external influences. The concepts and connections within the model can be used by clinicians for assessment and interventions when working with couples facing infertility.     

The structure of tradeoffs in model building

Despite their best efforts, scientists may be unable to construct models that simultaneously exemplify every theoretical virtue. One explanation for this is the existence of tradeoffs: relationships of attenuation that constrain the extent to which models can have such desirable qualities. In this paper, we characterize three types of tradeoffs theorists may confront. These characterizations are then used to examine the relationships between parameter precision and two types of generality. We show that several of these relationships exhibit tradeoffs and discuss what consequences those tradeoffs have for theoretical practice. John Matthewson and Michael Weisberg have contributed equally to this paper.     

工程中利益冲突问题研究

首先在详细分析工程中利益冲突已有定义的基础上,本文从不同角度提出了一种不同的定义。然后,分析了利益冲突的构成,并列举了利益冲突的情形。接着,分析了利益冲突的伦理问题,并提出解决方法。最后介绍了美国工程社团以及大型企业有关利益冲突的伦理章程和行为规范。     

中国当前的医疗危机与医护人员的专业责任和使命

分析了导致当前国内医患关系恶化的种种宏观与微观的因素,认为其中最重要的原因是医患关系中出现不应存在的利益冲突,最终导致医患关系出现一种诚信危机。以此为讨论起点,分析了西方国家的信托模式的七种特征,论证医患关系的本质为何是一种信托关系,并指出忠诚与守信是信托关系和医疗专业精神的核心价值。在结论中特别指出,这种认知明确了医疗专业在当前的医患危机中应该扮演的角色和担当的责任。