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91.
Concerns about road safety are at the forefront of discussions given the recent legalization of cannabis in many areas. Some studies have demonstrated that the frequency of cannabis use is a significant predictor of risky driving among young drivers. However, it is difficult to isolate the specific contribution of substance use from the influence of certain individual personality traits such impulsivity. Indeed, impulsivity traits (i.e., positive urgency, negative urgency, lack of premeditation, lack of perseverance, sensation seeking) are also correlated with risky driving. The present study examined the effect of the frequency of cannabis use on risky driving while taking into account the effect of five impulsivity traits. A community sample of 209 young drivers (aged 17–25 years) completed self-report questionnaires about their road behaviors, their cannabis use, and their impulsivity traits. The results showed that the frequency of cannabis use was significantly associated with risky driving beyond the five impulsivity traits measured. Positive urgency was the only impulsivity trait that remained significantly associated with risky driving once all covariates were entered into the model. Moreover, the frequency of cannabis use acted as a mediator in the relationship between sensation seeking and risky driving. 相似文献
92.
The purpose of the study was to identify the cognitive subtypes demonstrated by children with developmental coordination disorder (DCD) using the Planning-Attention-Simultaneous-Successive Processing (PASS) theory and the Cognitive Assessment System (D-N CAS). Participants were 108 children aged 5- and 6-years old, 54 with DCD and 54 without DCD, all attending typical kindergartens. They were examined on 31 cognitive-motor variables. Hierarchical-agglomerative and iterative partitioning cluster analyses including 9 motor and 7 cognitive variables revealed the following six subtypes:
- oC1 = children at risk (having considerable difficulty with jumping and minor difficulty with manual dexterity and simultaneous coding);
- oC2 = children on the mean (all cognitive-motor scores close to the mean);
- oC3 = free from cognitive-motor problems (all scores above average);
- oC4 = manual dexterity, planning and simultaneous coding difficulties;
- oC5 = manual dexterity, dynamic balance, and planning difficulties;
- oC6 = generalized cognitive-motor dysfunction (all scores considerably below average).
93.
If one formulates Helmholtz’s ideas about perception in terms of modern-day theories one arrives at a model of perceptual
inference and learning that can explain a remarkable range of neurobiological facts. Using constructs from statistical physics
it can be shown that the problems of inferring what cause our sensory inputs and learning causal regularities in the sensorium
can be resolved using exactly the same principles. Furthermore, inference and learning can proceed in a biologically plausible
fashion. The ensuing scheme rests on Empirical Bayes and hierarchical models of how sensory information is generated. The
use of hierarchical models enables the brain to construct prior expectations in a dynamic and context-sensitive fashion. This
scheme provides a principled way to understand many aspects of the brain’s organisation and responses. In this paper, we suggest
that these perceptual processes are just one emergent property of systems that conform to a free-energy principle. The free-energy
considered here represents a bound on the surprise inherent in any exchange with the environment, under expectations encoded
by its state or configuration. A system can minimise free-energy by changing its configuration to change the way it samples
the environment, or to change its expectations. These changes correspond to action and perception, respectively, and lead
to an adaptive exchange with the environment that is characteristic of biological systems. This treatment implies that the
system’s state and structure encode an implicit and probabilistic model of the environment. We will look at models entailed
by the brain and how minimisation of free-energy can explain its dynamics and structure. 相似文献
94.
In this paper, we studied spontaneous newborn movements regarding the coordination of the four limbs, arms and legs, from a dynamic perspective. We used the method of recurrence plots to analyse the kinematic data from audiovisual recordings of neonates. We identified temporal and spatial synchronization of the four limbs that resulted in high recurrence patterns of biomechanical reference configurations. Furthermore, we identified transitions between linear and nonlinear epochs in the movement behavior of newborns on different time scales by means of recurrence quantification analysis. Results are discussed in the context of the concept of a structural hierarchy, in which different time scales correspond to hierarchical levels of organization. 相似文献
95.
Carrie S. McCleese Lillian T. Eby Elizabeth A. Scharlau Bethany H. Hoffman 《Journal of Vocational Behavior》2007,71(2):282-299
Hierarchically, job content, and double plateaued employees from a variety of industries were surveyed regarding their experiences. Plateau-specific stress was higher than the stress experienced by the general population. Plateaued employees also reported more depression than the general population. Double plateaued employees reported higher depression than hierarchically plateaued employees. Content analysis revealed 27 distinct coping strategies reported by employees, representing 7 coping meta-themes. The most frequently occurring meta-themes were Discuss Problem, Job Withdrawal, and Mental Coping. Hierarchically plateaued employees reported slightly greater use of Mental Coping strategies than job content and double plateaued employees. 相似文献
96.
This paper examines the role of self-interest and symbolic attitudes as predictors of support for two domestic policy issues—guaranteed jobs and incomes and national health insurance—in the American National Election Survey (ANES) between 1972 and 2004. As was the case in 1976 when Sears, Lau, Tyler, and Allen (1980 ) first explored this topic, symbolic attitudes continue to be much more important predictors of policy attitudes than various indicators of self-interest over the 30 years we analyze. We explore this finding further to determine whether any individual/internal and external/contextual variables affect the magnitude of self-interest effects on policy support. Five possible internal moderators of self-interest effects are examined: (1) political knowledge, (2) issue publics, (3) political values, (4) social identifications, and (5) emotions, but none are found to boost the magnitude of the self-interest effect. However, we do find some evidence that contextual variables representing the social/information environment moderate the impact of self-interest on public opinion. 相似文献
97.
Kohlberg's characterization of moral development as displaying an invariant hierarchical order of structurally consistent stages is losing ground. However, by applying Rasch analysis, Dawson recently gave new interpretation and support to his characterization of stage development. Using Rasch models, we replicated and strengthened her findings in a re-analysis of three sets of longitudinal socio-moral reasoning data collected in Iceland. A new application of Rasch analysis provided support for upward development. Our results supported Kohlberg's characterization of stage development and the cross-cultural stability of Dawson's findings that were exclusively based on US samples. We conclude that proposals to replace Kohlberg's characterization of moral development are premature. 相似文献
98.
小学儿童互选友谊的发展趋势及攻击行为的影响:3年追踪研究 总被引:1,自引:0,他引:1
对小学3、4年级的285名儿童进行了3年追踪调查,分析了儿童分别与男、女生互选友谊数的变化趋势及其在个体间的差异,探讨了外部攻击和关系攻击分别对两类互选友谊数的影响。结果表明:(1)儿童的男、女生互选友谊数在3年时间内都有显著的增加趋势,并表现出显著的性别差异,儿童与同性互选友谊数显著多于他们与异性的互选友谊数,男生与女生互选友谊数的增加速度比女生与女生互选友谊数增加速度慢,儿童与男生的互选友谊数越多,他/她与女生的互选友谊数就越少,表明了性别隔离现象的存在。(2)在控制了关系攻击的影响后,儿童的外部攻击对他们在各时间点测得的与女生的互选友谊数有显著的消极影响,而对他们与男生的互选友谊数影响不显著;在控制了外部攻击的影响后,儿童的关系攻击对他们在各时间点测得的与女生的互选友谊数有显著的积极影响,而对他们与男生的互选友谊数影响不显著。这说明外部攻击和关系攻击对儿童互选友谊数的影响存在性别差异 相似文献
99.
100.
Neuroticism is the personality trait most consistently and strongly connected to psychopathology. The majority of research on the relationship between traits and mental illness has focused on neuroticism’s connection with broad psychopathology spectra or discrete disorders. However, both personality and psychopathology are hierarchically-organized domains that may be examined at multiple levels of fidelity and bandwidth from very specific thoughts, feelings, and behaviors (i.e., nuance traits or symptoms) to very broad patterns indexing many interrelated tendencies (i.e., general factors). The Hierarchical Taxonomy of Psychopathology (HiTOP) is a recently proposed nosologic framework for psychopathology symptoms and domains that accounts for this tiered organization. Here, we illustrate how neuroticism-psychopathology relationships—both what is known and unknown—may be elucidated through the HiTOP system. 相似文献