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排序方式: 共有236条查询结果,搜索用时 140 毫秒
171.
Mitzi M. Gonzales Takashi Tarumi Hirofumi Tanaka Jun Sugawara Tali Swann-Sternberg Katayoon Goudarzi Andreana P. Haley 《Brain and cognition》2010
The current study examined the relationship between a prognostic indicator of vascular health, flow-mediated dilation (FMD), and working memory-related brain activation in healthy middle-aged adults. Forty-two participants underwent functional magnetic resonance imaging while completing a 2-Back working memory task. Brachial artery endothelial-dependent flow-mediated dilation (FMD) was assessed using B-mode ultrasound. The relationship between FMD and task-related brain activation in a priori regions of interest was modeled using hierarchical linear regression. Brachial FMD, was significantly related to reduced working memory-related activation in the right superior parietal lobule (β = 0.338, p = 0.027), independent of age, sex, systolic blood pressure, and full scale IQ (F(5, 36) = 2.66, p = 0.038). These data provide preliminary support for the association between a preclinical marker of endothelial dysfunction and cerebral hemodynamic alterations in healthy middle-aged adults. Considering the modifiable nature of endothelial function, additional investigations on the prognostic significance of FMD on future cognitive impairment are warranted. 相似文献
172.
Christie Zunker Carol B. Peterson Li Cao James E. Mitchell Stephen A. Wonderlich Scott Crow Ross D. Crosby 《Behaviour research and therapy》2010,48(12):1227-1231
The purpose of this study was to perform a receiver operator characteristics (ROC) analysis on a treatment sample from a randomized controlled treatment trial of participants with binge eating disorder (BED). An ROC analysis was completed with 179 adults in a 20-week treatment trial for BED to predict abstinence from binge eating at end of treatment. Percent reductions in binge eating episodes were examined following weeks 1 through 10 of treatment. The rate of percent decrease in binge eating episodes during treatment for BED was a significant predictor of clinical outcome at end of treatment. Participants who demonstrated a 15% reduction in binge eating episodes at week one were more likely to respond positively to treatment and achieve clinical remission. Findings from the current study suggest that a significant reduction in binge eating during the first week of treatment may be predictive of end of treatment remission in those with BED. 相似文献
173.
Astrid Mueller Laurence Claes Steve A. Wonderlich Ross D. Crosby Martina de Zwaan 《Behaviour research and therapy》2010,48(9):930-935
Personality prototypes based on the Big Five factor model were investigated in a treatment-seeking sample of 68 individuals with compulsive buying (CB). Cluster analysis of the NEO Five-Factor Inventory (NEO-FFI) scales yielded two distinct personality clusters. Participants in cluster II scored significantly higher than those in cluster I on neuroticism and lower on the other four personality traits. Subjects in cluster II showed higher severity of CB, lower degree of control over CB symptoms, and were more anxious, interpersonally sensitive and impulsive. Furthermore, cluster II was characterized by higher rates of comorbid anxiety disorders, and cluster B personality disorders. The two personality prototypes did not differ with respect to obsessive-compulsive features. Finally and of considerable clinical significance, participants in cluster II reported lower remission rates after undergoing cognitive-behavioral therapy. Implications of the results for treatment are discussed. 相似文献
174.
175.
George C. Banks Haley M. Woznyj Sven Kepes John H. Batchelor Michael A. McDaniel 《Personnel Psychology》2018,71(3):457-478
Tipping represents a form of compensation valued at over $50 billion a year in the United States alone. Tipping can be used as an incentive mechanism to reduce a principal–agent problem. An agency problem occurs when the interests of a principal and agent are misaligned, and it is challenging for the principal to monitor or control the activities of the agent. However, past research has been limited in the investigation of the extent to which tipping is effective at addressing this problem. Following an examination of 74 independent studies with 12,271 individuals, meta‐analytic results indicate that there is a small, positive relation between service quality and percentage of a bill tipped ( = .15 without outliers). Yet, in support of the idea behind tipping, relative weights analyses illustrate that service quality was a stronger predictor of percentage of the bill tipped than food quality, frequency of patronage, and dining party size. Evidence also suggests that racial minority servers tend to be tipped less than White servers (Cohen's d = .17), and women tend to be tipped more than men (Cohen's d = .15). Still, given the magnitude of the effect, one might question if tipping is an effective compensation practice to reduce the principal–agent problem. We discuss theoretical and practical implications for future research. 相似文献
176.
All lives contain negative events, but how we think about these events differs across individuals; negative events often include positive details that can be remembered alongside the negative, and the ability to maintain both representations may be beneficial. In a survey examining emotional responses to the 2013 Boston Marathon bombings, the current study investigated how this ability shifts as a function of age and individual differences in initial experience of the event. Specifically, this study examined how emotional importance (i.e. self-reported emotional arousal and personal significance), involvement (i.e. self and friend/family involvement in the 2013 Boston Marathon and self-involvement in prior marathons), and self-reported surprise upon hearing about the event related to the tendency to report focusing on the negative and positive aspects of the bombings. Structural equation models revealed that while greater emotional importance and surprise were associated with a greater focus on negative elements, involvement and age were associated with increased consideration of positive aspects. Further, emotional importance was more strongly related to an increased focus on negative aspects for young adults and an increased focus on positive aspects for older adults, highlighting a tendency for older adults to enhance positive features of an otherwise highly negative event. 相似文献
177.
Emily Wakefield Haley Keller Hannah Mianzo Chinmayee B. Nagaraj Sanjukta Tawde Elizabeth Ulm 《Journal of genetic counseling》2018,27(5):1067-1073
The goal of this study was to evaluate the impact of genetic counselor (GC) review of incoming test orders received in an academic diagnostic molecular genetics laboratory. The GC team measured the proportion of orders that could be modified to improve efficiency or sensitivity, tracked provider uptake of GC proposed testing changes, and calculated the health care dollar savings resulting from GC intervention. During this 6-month study, the GC team reviewed 2367 incoming test orders. Of these, 109 orders (4.6%) were flagged for review for potentially inefficient or inappropriate test ordering. These flagged orders corresponded to a total of 51 cases (1–5 orders for each patient), representing 54 individuals and including 3 sibling pairs. The GC team proposed a modification for each flagged case and the ordering providers approved the proposed change for 49 of 51 cases (96.08%). For the 49 modifications, the cost savings totaled $98,750.64, for an average of $2015.32 saved per modification. This study provides evidence of the significant contribution of genetic counselors in a laboratory setting and demonstrates the benefit of laboratories working with ordering providers to identify the best test for their patients. The review of test orders by a genetic counselor both improves genetic test ordering strategies and decreases the amount of health care dollars spent on genetic testing. 相似文献
178.
Cross‐situational statistical learning of words involves tracking co‐occurrences of auditory words and objects across time to infer word‐referent mappings. Previous research has demonstrated that learners can infer referents across sets of very phonologically distinct words (e.g., WUG, DAX), but it remains unknown whether learners can encode fine phonological differences during cross‐situational statistical learning. This study examined learners’ cross‐situational statistical learning of minimal pairs that differed on one consonant segment (e.g., BON–TON), minimal pairs that differed on one vowel segment (e.g., DEET–DIT), and non‐minimal pairs that differed on two or three segments (e.g., BON–DEET). Learners performed above chance for all pairs, but performed worse on vowel minimal pairs than on consonant minimal pairs or non‐minimal pairs. These findings demonstrate that learners can encode fine phonetic detail while tracking word‐referent co‐occurrence probabilities, but they suggest that phonological encoding may be weaker for vowels than for consonants. 相似文献
179.
The roles of trauma exposure,rejection sensitivity,and callous‐unemotional traits in the aggressive behavior of justice‐involved youth: A moderated mediation model 下载免费PDF全文
180.
Two experiments were performed to test the hypothesis that gender stereotypes influence social inferences about homeowners who use a gun to shoot an intruder. It was predicted that homeowners who violate stereotypical norms would be perceived more negatively, and would be perceived as more responsible for the consequences of their weapon use than would homeowners of both genders who represent stereotype-consistency. The data from the first experiment provided some support for this notion. Male homeowners who shot incompetently were perceived more negatively than were men who shot the intruder with competence. The opposite trend was observed for female homeowners. The second experiment tested a refinement of this hypothesis and revealed how attitudes toward guns, specifically degree of acceptance of the notion that guns provide their owners with protection, moderates the social judgments formed about homeowners who use weapons as a means of defending their property during a burglary, Persons for whom the event is inconsistent with their attitude-based expectancies blamed the stereotype-inconsistent homeowners more than the gender stereotype-consistent homeowners, particularly the skillful female shooters. Individuals with relatively negative attitudes toward guns, in contrast, tended to perceive the skillful female shooters more positively than the other homeowners. Perceptions of weapons users who find themselves and their actions scrutinized by the media and the court system may depend upon perceivers' pre-existing category expectations and attitudes. © 1993 Wiley-Liss, Inc. 相似文献