The Internal and External Problems of String Theory: A Philosophical View

String theory is at the moment the only advanced approach to a unification of all interactions, including gravity. But, in spite of the more than 30 years of its existence, it does not make any empirically testable predictions, and it is completely unknown which physically interpretable principles could form the basis of string theory. At the moment, “string theory” is no theory at all, but rather a labyrinthic structure of mathematical procedures and intuitions. The only motivations for string theory consist in the mutual incompatibility of the standard model of quantum field theory and of general relativity as well as in the metaphysics of the unification program of physics, aimed at a final unified theory of all interactions, including gravity. The article gives a perspective on the problems leading to and resulting from this situation.

Analyzing individual differences in vocational, leisure, and family interests: A multitrait-multimethod approach

This study investigates the latent structure of individual differences in vocational, leisure, and family interests. The participants consisted of 302 French adults who rated their like or dislike for activities based on Holland’s RIASEC typology and presented in three life domains: work, family and leisure. The multitrait-multimethod model proposed by Eid [Eid, M. (2000). A multitrait-multimethod model with minimal assumptions. Psychometrika 65, 241-261.] was used with the vocational interests as standard comparison, and was applied separately on each of the 6 RIASEC types. Results indicated that interests strongly intercorrelated whatever their vocational vs. leisure or family contextualization. However, since these correlations were controlled for measurement error, the results also suggested that the effects of these contextualizations of the activities could not be ignored because they accounted for a non negligible part of the variance for several activities. Theoretical and practical implications are discussed and directions for future research are presented.     

Psychological strain and emotional labor among police-officers: A diary study

The authors examined the relationship between psychological strain, emotional dissonance and emotional job demands during a working day of 65 Dutch (military) police officers, using a 5-day diary design. We hypothesized that emotional dissonance partly mediated the relationship between psychological strain at the start and at the end of a work shift. We also tested the mediating role of emotional dissonance between emotional job demands and psychological strain at the end of a work shift. Results of structural equation modeling analyses showed that psychological strain at the start of a work shift had a positive effect on the experience of emotional dissonance and psychological strain at the end of a work shift. Emotional dissonance partly mediated the relationship between psychological strain at the start and psychological strain at the end of a work shift. Results are discussed in light of conservation of resources theory (Hobfoll, S. E. (1988). The ecology of stress. New York: Hemisphere Publishing Corporation).     

Dysfunctional implications of narrow window theory: variability in the intuitive assessment of correlation

Narrow Window theory, suggested by Y. Kareev ten years ago, has so far focused on one central implication of the limited capacity of working memory on intuitive correlation estimation, namely, overestimation of the distal population correlation. This paper points to additional and perhaps more dramatic implications due to the large dispersion of intuitive estimates: (a) large estimation errors, possibly causing overestimation of negligible rhos, misses of strong rhos, and distorted hierarchies of the rhos between different pairs of variables; and (b) large interpersonal differences in the estimation of any given rho and highly incongruent hierarchies of estimated correlations between different pairs of variables. These implications impede both individuals' adaptation to the empirical world and communication among themselves.     

Interoceptive fear conditioning as a learning model of panic disorder: an experimental evaluation using 20% CO(2)-enriched air in a non-clinical sample

Despite the role afforded interoceptive fear conditioning in etiologic accounts of panic disorder, there are no good experimental demonstrations of such learning in humans. The aim of the present study was to evaluate the interoceptive conditioning account using 20% carbon dioxide (CO(2))-enriched air as an interoceptive conditioned stimulus (CS) (i.e., physiologically inert 5-s exposures) and unconditioned stimulus (US) (i.e., physiologically prepotent 15-s exposures). Healthy participants (N=42) were randomly assigned to one of three conditions: a CS-only, contingent CS-US pairings, or unpaired/non-contingent CS and US presentations. Electrodermal and self-report (e.g., distress, fear) served as indices of conditioned emotional responding. Results showed greater magnitude electrodermal and evaluative fear conditioning in the paired relative to the CS-only condition. The explicitly unpaired condition showed even greater electrodermal and evaluative responding during acquisition, and marked resistance to extinction. The latter results are consistent with the possibility that the unpaired procedure constituted a partial reinforcement procedure in which CO(2) onset was paired with more extended CO(2) exposure on 50% of the trials. Overall, the findings are consistent with contemporary learning theory accounts of panic.     

器官的功能和储备与中医阴阳关系探讨

中医是中华民族的瑰宝,但理论体系中的概念和命题很模糊。比较中西医在哲学抽象上的差异,采用哲学中物质无限性和有限性命题,以独特视角结合临床研究结果,阐述了阴阳在医学中的含义,将功能和储备这一对概念定义为阴阳,并指出功能和储备是生命中不可缺少的支点。     

证候存在的逻辑回答

认为存在的就是客观的,包含了自然客观、思维客观和理性客观;把疾病现象和疾病本质划等号,在症状层面规范证候标准,抛弃中医辨证思维,就等于否定中医。物质不能等于客观,不能取代存在。证候属于理性客观,发生于中医学,是中医“阴阳神气”观念临床实在化(还原)的必然。     

基于认知理论的测验编制技术—项目生成

传统测验重视统计技术,不重视测量结构的心理学意义,使得它的功能局限于筛选,不能提供更多的信息。由于认知心理学理论、心理计量学以及计算机技术的发展,使得基于认知理论指导下的项目生成技术逐渐成熟。该文从项目生成的概念、方法,及研究的意义和难点等方面对项目生成技术作了一个简要述评,以期推进我国认知心理学与心理测量学相结合的研究工作。     

成人在错误信念任务上的表现

考察成人在错误信念(FB)任务上是否存在"知识偏差"效应。实验1重复Birch等的实验程序并未得到与之一致的结果,成人在FB任务上的表现不理想,且无"知识偏差"效应存在。实验2排除琴盒位置及颜色的突出性影响后,结果与实验1相似。成人在FB任务上的不佳表现与成人具有心理理论的事实相悖,说明把通过FB任务作为衡量心理理论的唯一评定标准有待商榷。     

Using Adult Learning Theory Concepts to Address Barriers to Cancer Genetic Risk Assessment in the African American Community

Utilization of cancer genetic risk assessment can be profoundly influenced by an individuals’ knowledge of risk assessment, attitudes regarding illness and healthcare, and affective reactions derived from social norms. Race and ethnicity play a powerful role in the development of an individual's attitudes and should be considered when attempting to understand a person's openness to cancer genetic risk assessment (Lannin et al., 1998). Until recently, however, cancer screening and prevention programs have been primarily based on data from studies conducted with the Caucasian population, yielding data that are not fully applicable to the African American community. In the last several years, research findings regarding African American's knowledge, attitudes, and feelings about genetic counseling and testing have grown (Matthews et al., 2000; Singer et al., 2004; Thompson et al., 2003). However, to the authors’ knowledge, these data have yet to be presented in a manner that both summarizes the barriers that African Americans have reported regarding cancer genetic risk assessment, while at the same time suggesting methods individual genetic counselors can utilize during community presentations to help address these barriers. This article will first summarize previous empirical findings regarding African Americans’ knowledge, attitudes, and feelings about cancer genetic risk assessment. The article will then apply adult learning theory to those findings to provide genetic counselors with practical, theory based techniques to apply toward community based educational programs with African American groups.