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141.
The authors examined how individuals adapt their gait and regulate their body configuration before altering direction during walking. Eight young adults were asked to change direction during walking with different turning angles (0deg;, 45deg;, 90deg;), pivot foot (left, right), and walking speeds (normal and fast). The authors used video and force platform systems to determine participants' whole-body center of mass and the center of pressure during the step before they changed direction. The results showed that anticipatory postural adjustments occurred during the prior step and occurred earlier for the fast walking speed. Anticipatory postural adjustments were affected by all 3 variables (turn angle, pivot foot, and speed). Participants leaned backward and sideward on the prior step in anticipation of the turn. Those findings indicate that the motor system uses central control mechanisms to predict the required anticipatory adjustments and organizes the body configuration on the basis of the movement goal.  相似文献   
142.
People consistently believe that negative events are less likely to happen to them than to others. Research suggests a relationship between this optimistic bias and perceived control such that the greater control people perceive over future events, the greater their optimistic bias. We conducted a meta-analysis of 27 independent samples to quantify the size of this relationship and examine what variables moderated the relationship. Greater perceived control was significantly related to greater optimistic bias, but this relationship was moderated by participant nationality, student status, risk status, and the type of optimistic bias measure used. We discuss the findings in the context of primary versus secondary control.  相似文献   
143.
Sense of control is frequently found to be related to health. A model of control beliefs, disease-management behaviors, and health indicators was tested in a sample of 74 Latino Americans and 115 European Americans with Type 2 diabetes. Two measures of control beliefs, one diabetes-specific (diabetes self-efficacy) and one global (mastery), were examined for their effects on management behaviors (diet and exercise) and on health (HbA1C and general health). Results indicated that the relationship between control and management behaviors varied by measure of control and by group. For Latino participants, global mastery was related to management behaviors; whereas, self-efficacy was related to such behaviors among European Americans. The relationship between control and health did not appear to be mediated by management behaviors. This study provides support for a diversified approach to control, behavior, and health.  相似文献   
144.
Controlling parenting is associated with child anxiety however the direction of effects remains unclear. The present study implemented a Latin-square experimental design to assess the impact of parental control on children’s anxious affect, cognitions and behaviour. A non-clinical sample of 24 mothers of children aged 4-5 years were trained to engage in (a) controlling and (b) autonomy-granting behaviours in interaction with their child during the preparation of a speech. When mothers engaged in controlling parenting behaviours, children made more negative predictions about their performance prior to delivering their speech and reported feeling less happy about the task, and this was moderated by child trait anxiety. In addition, children with higher trait anxiety displayed a significant increase in observed child anxiety in the controlling condition. The pattern of results was maintained when differences in mothers’ levels of negativity and habitual levels of control were accounted for. These findings are consistent with theories that suggest that controlling parenting is a risk factor in the development of childhood anxiety.  相似文献   
145.
As a resource-allocation method, free competition is generally considered more efficient and fairer than binding assignment, yet individuals’ hedonic experiences in these different resource-allocation conditions are largely ignored. Using a minimalistic experimental simulation procedure, we compared participants’ hedonic experiences between a free-competition condition (in which participants could equally and freely compete for the superior resource) and a binding-assignment condition (in which the superior and inferior resources were unequally and irreversibly assigned to different participants). We found that individuals in the binding-assignment condition – even the disadvantaged ones – were happier than those in the free-competition condition. We attributed the effect to individuals’ peace of mind, and supported the peace-of-mind notion by identifying two moderators: ease of social comparison and enjoyability of the inferior resource. In sum, this research highlighted the hedonic aspects of resource allocation methods and identified when accepting one’s fate is hedonically better than fighting for the best.  相似文献   
146.
147.
While hedonic and reward-related processes are central to drug use and dependence, this article focuses on the contribution that cognitive processes may make to addiction. In particular, attention is drawn to those processes involved in exercising control over behavior as drug dependence is characterized by risky, impulsive behavior. Functional neuroimaging implicates prefrontal deficits in cocaine dependence with an emerging picture of cocaine users having attentional biases towards drug-related stimuli, poor performance in laboratory tests of inhibitory control, and compromised monitoring and evaluation of their behavior. Combined, these deficits may contribute to the continuation of use in dependent individuals and may qualify as important targets for therapeutic interventions.  相似文献   
148.

This case study evaluates the clinical effectiveness of a psychological treatment within a behaviour medicine approach to epilepsy of a subject with progressive myoclonic epilepsy. The pattern of seizure behaviour was identified in the behaviour analysis. Self-management skills were taught to the client and in vivo exposure was subsequently used in a desensitization process. The main findings in this study were that the debilitating effects of the myclonic jerks can be reduced and functioning level improved when fear of seizures is reduced. These results indicate that psychological treatment can increase the level of functioning in clients with progressive myoclonic epilepsy.  相似文献   
149.
Tension headache sufferers and nonheadache controls were compared with respect to (1) frontal EMG during both baseline and presentation of an imagined stressor, (2) trait anxiety, (3) locus of control expectancies for health related behaviors, and (4) exposure to stressful life events. Tension headache sufferers displayed higher resting muscle tension levels than did nonheadache controls. However, both groups responded similarly to the imagined stress stimulus and displayed significant muscle tension elevations of similar magnitude. While tension headache sufferers reported higher levels of trait anxiety, no differences were found between the two groups for locus of control expectancies and exposure to stressful life events. The diagnostic and treatment implications of these findings are discussed.  相似文献   
150.
This study moves from “work-family” to a multi-dimensional “life-course fit” construct (employees’ cognitive assessments of resources, resource deficits, and resource demands), using a combined work-family, demands-control and ecology of the life course framing. It examined (1) impacts of job and home ecological systems on fit dimensions, and (2) whether control over work time predicted and mediated life-course fit outcomes. Using cluster analysis of survey data on a sample of 917 white-collar employees from Best Buy headquarters, we identified four job ecologies (corresponding to the job demands-job control model) and five home ecologies (theorizing an analogous home demands-home control model). Job and home ecologies predicted fit dimensions in an additive, not interactive, fashion. Employees’ work-time control predicted every life-course fit dimension and partially mediated effects of job ecologies, organizational tenure, and job category.  相似文献   
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