青少年学生焦虑敏感与睡眠质量的关系及其内在机制

采用中学生、大学生焦虑敏感问卷和匹兹堡睡眠质量指数量表(PSQI),分别对1011名中学生和607名大学生进行调查。结果显示高焦虑敏感学生的PSQI总分显著高于低焦虑敏感学生,焦虑敏感及其三个因子与PSQI的相关都是中效应,焦虑敏感对青少年学生睡眠质量指数具有显著的正向预测作用,焦虑敏感水平越高,其睡眠质量越差。焦虑敏感可能以应激事件和健康问题作为致敏源,以焦虑等负性情绪作为敏感内容,在消极自动认知觉察与思维的介入下,进一步放大对有关负性情绪的感受与体验,从而影响青少年学生的睡眠质量。     

Exemplars, prototypes, similarities, and rules in category representation: an example of hierarchical bayesian analysis

This article demonstrates the potential of using hierarchical Bayesian methods to relate models and data in the cognitive sciences. This is done using a worked example that considers an existing model of category representation, the Varying Abstraction Model (VAM), which attempts to infer the representations people use from their behavior in category learning tasks. The VAM allows for a wide variety of category representations to be inferred, but this article shows how a hierarchical Bayesian analysis can provide a unifying explanation of the representational possibilities using 2 parameters. One parameter controls the emphasis on abstraction in category representations, and the other controls the emphasis on similarity. Using 30 previously published data sets, this work shows how inferences about these parameters, and about the category representations they generate, can be used to evaluate data in terms of the ongoing exemplar versus prototype and similarity versus rules debates in the literature. Using this concrete example, this article emphasizes the advantages of hierarchical Bayesian models in converting model selection problems to parameter estimation problems, and providing one way of specifying theoretically based priors for competing models.     

Portrait of a narcissist: Manifestations of narcissism in physical appearance

Narcissism is characterized in part by an acute concern for one’s appearance. Despite this fundamental aspect of narcissism, little is known about whether narcissism is manifested in features of physical appearance. Can you tell if someone is narcissistic just by looking at them? Our results indicate that snap judgments of narcissism based on full-body photographs are at least as accurate as snap judgments of any of the big five personality traits. Narcissists are more likely to wear expensive, flashy clothing, have an organized, neat appearance requiring a lot of preparation, and (in females) wear makeup and show cleavage. Furthermore, observers’ judgments correlate with the presence of these cues, suggesting that they are drawing on the correct information when making their judgments. Finally, observers’ judgments are associated with three of the four facets of narcissism and capture the unique constellation of personality traits typical of narcissists (i.e., high extraversion and low agreeableness). These findings suggest that physical appearance reflects narcissists’ personality, preoccupation with good looks, and desire to be the center of attention, and serves as a vehicle with which to promote their status.     

Personality traits and subjective health in the later years: The association between NEO-PI-R and SF-36 in advanced age is influenced by health status

This study examined the association between personality traits (as measured by the NEO-PI-R) and subjective ratings of mental and physical health (as measured by the SF-36) in two samples of older adults differing in health status (Baltimore Longitudinal Study of Aging, BLSA, n = 393, vs. Medicare Primary and Consumer-Directed Care Demonstration, Medicare PCC, n = 648). The association between personality traits and subjective mental health did not differ significantly across samples. The association between personality and subjective physical health, however, was significantly stronger in the healthy BLSA sample than in the medically challenged Medicare PCC sample. Differences in health conditions and recent hospitalizations partially accounted for this effect. Lifespan developmental considerations and implications for the use of subjective health ratings as outcome measures in clinical studies are discussed.     

La représentation des causes de l’état de santé par les infirmiers et les points de vue envisagés des patients et des aidants naturels : une approche socionormative

This study examines the representation of the determining factors of patients’ states of health in therapeutic care situations. We describe the average representation of experienced hospital nurses (n=44) and the differences which they consider to exist between their own and their patients’ points of view. Taking as our starting point the purpose of the care provided and the asymmetry of the carer/patient relationship, we hypothesize, on the one hand, that nurses will have a representation of their patients’ state of health which is based on the care to be provided, with the factors determining the state of health being necessarily perceived as having a general impact on patients’ lives while still being remediable, i.e. capable of changing and being controlled by the provided care. On the other hand, we expect them to attribute a passive position and attitude to their patients, with the factors determining their state of health being necessarily perceived as being out of their own control. The results and the analysis of the representations reported as being those of the patients and their families seem to justify this perception and role of carer: the supposed representations of the latter would appear to be convergent but less focused on health problems and would tend to minimize the patient’s involvement, in particular when the state of health declines. The results are discussed with reference to the Health Belief Model and the social norm of internality as well as the professional practices observed in hospital environments.     

Embodying gestures: The Social Orienting Model and the study of early gestures in autism

Autistic spectrum disorders impair the ability to interact socially. Detecting and understanding their onset is not only an empirical enterprise, but also a theoretical one, often linked to studies on intersubjectivity. Different theoretical perspectives have been elaborated in the past to account for the deficit. The main purpose of this paper is to reinforce and offer empirical grounding to a recent approach, termed Social Orienting Model, by presenting the main theoretical approaches to autism and contrasting them to this view, as well as considering its possible effect on empirical research, focusing on current literature analyzing gestures in children with autism.

Formal modeling and analysis of cognitive agent behavior

From an external perspective, cognitive agent behavior can be described by specifying (temporal) correlations of a certain complexity between stimuli (input states) and (re)actions (output states) of the agent. From an internal perspective the agent's dynamics can be characterized by direct (causal) temporal relations between internal and mental states of the agent. The latter type of specifications can be represented in a relatively simple, executable format, which enables different types of analysis of the agent's behavior. In particular, simulations of the agent's behavior under different (environmental) circumstances can be explored. Furthermore, by applying verification techniques, automated analysis of the consequences of the agent's behavior can be carried out. To enable such types of analysis when only given an external behavioral specification, this has to be transformed first into some type of executable format. An automated procedure for such a transformation is proposed in this paper. The application of the transformation procedure is demonstrated for a number of cases, showing examples of the types of analysis as mentioned for different forms of behavior.     

Bayesian IRT Guessing Models for Partial Guessing Behaviors

According to the recent Nation’s Report Card, 12th-graders failed to produce gains on the 2005 National Assessment of Educational Progress (NAEP) despite earning better grades on average. One possible explanation is that 12th-graders were not motivated taking the NAEP, which is a low-stakes test. We develop three Bayesian IRT mixture models to describe the results from a group of examinees including both nonguessers and partial guessers. The first assumes that the guesser answers questions based on his or her knowledge up to a certain test item, and guesses thereafter. The second model assumes that the guesser answers relatively easy questions based on his or her knowledge and guesses randomly on the remaining items. The third is constructed to describe more general low-motivation behavior. It assumes that the guesser gives less and less effort as he or she proceeds through the test. The models can provide not only consistent estimates of IRT parameters but also estimates of each examinee’s nonguesser/guesser status and degree of guessing behavior. We show results of a simulation study comparing the performance of the three guessing models to the 2PL-IRT model. Finally, an analysis of real data from a low-stakes test administered to university students is presented.     

Relating momentary affect to the five factor model of personality: A Japanese case1

Abstract: This article shows that fundamental aspects of the structure of momentary affect are similar in Japanese and Canadian societies. We developed questionnaire scales in Japanese in four different formats for assessing self-reported momentary affect. Scales can be scored for dimensions defined by Feldman Barrett and Russell (1998 ), Thayer (1996 ), Larsen and Diener (1992 ), and Watson and Tellegen (1985 ). We administered these newly developed affect scales and NEO five-factor inventory ( Costa & McCrae, 1992 ) to a sample of 450 Japanese respondents. The affect scales were found to be psychometrically sound and to be interrelated, as found with English-speaking Canadians. Dimensions could be integrated into a two-dimensional affective space. Personality correlated with momentary affect, though not in the same pattern as found in Canada.