597 research outputs found
Emotional labor and authentic leadership
Organizational research has begun to once again focus on the importance of emotions in the workplace. In particular, the concept of emotional labor, the management of emotions at work to influence clients and customers, has recently received much attention. While research has addressed the impact of emotional labor on both employees and clients or customers, research has not examined emotional labor within the context of leadership.
Authentic leadership, an emerging construct in the study of leadership, is proposed to relate to emotional labor. Leaders\u27 authentic behavior has been shown to positively impact followers, such as increasing trust in their leader or positive job attitudes as in job satisfaction and organizational commitment. While authenticity refers to being true to oneself, emotional labor involves the alteration of one\u27s felt emotions in order to generate a particular emotional display. Given that engaging in emotional labor seems contrary to behaving authentically, emotional labor was expected to impact both leaders and followers through authenticity.
Specifically, emotional labor was hypothesized to have detrimental effects on a leader\u27s felt authenticity and followers\u27 perceptions of authenticity, leader emotional exhaustion, and followers\u27 trust in their leader. However, emotional labor was expected to positively impact evaluations of leader emotional displays. In addition, individual differences in self-monitoring were expected to influence the emotional labor leaders performed. Self-monitoring was expected to exacerbate the effect of emotional labor; leaders high in self-monitoring were expected to engage in more emotional labor. This study examined these relationships using a controlled, laboratory design. Assigned leaders led a team instructed to perform a collaborative task. Leaders were responsible for communicating the task requirements to their group and for managing the group throughout the task.
In addition to the task, participants completed surveys assessing emotional display rule perceptions, emotional labor, self-monitoring, leader emotional displays, authenticity, emotional exhaustion, and trust. Results indicate that leaders\u27 emotional labor was unrelated to their felt and perceived authenticity or leader emotional displays, but did relate to their emotional exhaustion. Self-monitoring did influence leaders\u27 emotional labor, although contrary to expectations. Leaders\u27 emotional displays and perceived authenticity did significantly relate to their followers\u27 trust
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The Effects of Training in Interaction Analysis on Teachers' Interpersonal Behavior
The specific purposes investigated were to ascertain the effect of training in interaction analysis upon the levels of 1. accurate empathy in teachers, 2. nonpossissive warmth in teachers, 3. genuineness in teachers, and 4. an analysis of the relationship between interaction analysis and the interpersonal behavior of the classroom teacher in view of its implications in teacher education
Open access series of imaging studies: Longitudinal MRI data in nondemented and demented older adults
The Open Access Series of Imaging Studies (OASIS) is a series of neuroimaging data sets that is publicly available for study and analysis. The present MRI data set consists of a longitudinal collection of 150 subjects aged 60 to 96 all acquired on the same scanner using identical sequences. Each subject was scanned on two or more visits, separated by at least one year for a total of 373 imaging sessions. Subjects were characterized using the Clinical Dementia Rating (CDR) as either nondemented or with very mild to mild Alzheimer‘s disease (AD). 72 of the subjects were characterized as nondemented throughout the study. 64 of the included subjects were characterized as demented at the time of their initial visits and remained so for subsequent scans, including 51 individuals with CDR 0.5 similar level of impairment to individuals elsewhere considered to have ‘mild cognitive impairment’. Another 14 subjects were characterized as nondemented at the time of their initial visit (CDR 0) and were subsequently characterized as demented at a later visit (CDR > 0). The subjects were all right-handed and include both men (n=62) and women (n=88). For each scanning session, 3 or 4 individual T1-weighted MRI scans were obtained. Multiple within-session acquisitions provide extremely high contrast-to-noise making the data amenable to a wide range of analytic approaches including automated computational analysis. Automated calculation of whole brain volume is presented to demonstrate use of the data for measuring differences associated with normal aging and AD
Benthic Predators and Northern Quahog (=Hard Clam) (Mercenaria Mercenaria Linnaeus, 1758) Populations
Increased numbers of benthic predators, especially crabs, have been proposed as a factor contributing to the decline of hard clams (Mercenaria mercenaria Linnaeus, 1758) in Great South Bay, NY. The long-term trend in benthic predators in this system was examined using observations on the distribution and abundance of predators that have been collected by the Town of Islip, NY as part of an annual survey of hard clam populations. The survey began in 1978 and extends to the present and provides concurrent observations of habitat (sediment type, and presence/absence of eelgrass), and hard clam size-frequency distribution and abundance. Predator type and abundance were reported from 1978 to 1981 and 1991 to 2003, which represents one of the most comprehensive benthic predator data sets currently available for any estuarine system. The annual averages of predator abundance in the survey area primarily show interannual fluctuations in abundance. Xanthid crabs (mud crabs, primarily Dispanopeus sayi Smith, 1869) were the numerically dominant predator in the system; blue crabs (Callinectes sapidus Rathbun, 1895) appeared in the late 1990s. Hard clam abundance has declined by 44% since the early 1990s. An Empirical Orthogonal Function (EOF) Analysis of the predator and hard clam data sets showed that fluctuations in predator abundance are: 1) mostly in phase over the survey region and 2) dominated by year-to-year fluctuations in abundance. The EOF results for the hard clams show that hard clam abundance fluctuations are: 1) in phase over the survey region and 2) dominated by a decreasing trend in abundance over the time series. The primary EOF modes essentially were uncoupled, which implies no strong predator-prey interactions between the predators and hard clams. By inference, increasing predator abundance does not appear to be a primary factor producing the long-term decline in hard clam populations. Predation pressure per recruit may still have increased because of declining hard clam population abundance and the concomitant decline in recruitment
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Functional Brain Imaging of Young, Nondemented, and Demented Older Adults
Brain imaging based on functional MRI (fMRI) provides a powerful tool for characterizing age-related changes in functional anatomy. However, between-population comparisons confront potential differences in measurement properties. The present experiment explores the feasibility of conducting fMRI studies in nondemented and demented older adults by measuring hemodynamic response properties in an event-related design. A paradigm involving repeated presentation of sensory-motor response trials was administered to 41 participants (14 young adults, 14 nondemented older adults, and 13 demented older adults). For half of the trials a single sensory-motor event was presented in isolation and in the other half in pairs. Hemodynamic response characteristics to the isolated events allowed basic response properties (e.g., amplitude and variance) between subject groups to be contrasted. The paired events further allowed the summation properties of the hemodynamic response to be characterized. Robust and qualitatively similar activation maps were produced for all subject groups. Quantitative results showed that for certain regions, such as in the visual cortex, there were marked reductions in the amplitude of the hemodynamic response in older adults. In other regions, such as in the motor cortex, relatively intact response characteristics were observed. These results suggest caution should be exhibited in interpreting simple main effects in response amplitude between subject groups. However, across all regions examined, the summation of the hemodynamic response over trials was highly similar between groups. This latter finding suggests that, even if absolute measurement differences do exist between subject groups, relative activation change should be preserved. Designs that rely on group interactions between task conditions, parametric manipulations, or group interactions between regions should provide valuable data for making inferences about functional-anatomic changes between different populations.Psycholog
Honors and Non-Honors Student Engagement: A Model of Student, Curricular, and Institutional Characteristics
Honors administrators may ask whether honors experiences facilitate student growth and whether honors students are inherently smarter than non-honors students and hence more able to seize these opportunities for growth. Although these questions will never fully be answered, we designed the current study to address the underlying topics of student characteristics and engagement in honors within the larger university.
Students’ motivation, their willingness to extend beyond the minimal level, significantly influences engagement. Honors students are engaged in experiences, curricular and extracurricular, that promote development, and the types of additional opportunities available to honors students and the feedback they receive affect participation. The interaction between honors students and their instructional environment may encourage them to engage with available resources more fully than non-honors students do
Honors and Non-Honors Student Engagement: A Model of Student, Curricular, and Institutional Characteristics
Honors administrators may ask whether honors experiences facilitate student growth and whether honors students are inherently smarter than non-honors students and hence more able to seize these opportunities for growth. Although these questions will never fully be answered, we designed the current study to address the underlying topics of student characteristics and engagement in honors within the larger university.
Students’ motivation, their willingness to extend beyond the minimal level, significantly influences engagement. Honors students are engaged in experiences, curricular and extracurricular, that promote development, and the types of additional opportunities available to honors students and the feedback they receive affect participation. The interaction between honors students and their instructional environment may encourage them to engage with available resources more fully than non-honors students do
Honors and Non-Honors Student Engagement: A Model of Student, Curricular, and Institutional Characteristics
Honors administrators may ask whether honors experiences facilitate student growth and whether honors students are inherently smarter than non-honors students and hence more able to seize these opportunities for growth. Although these questions will never fully be answered, we designed the current study to address the underlying topics of student characteristics and engagement in honors within the larger university.
Students’ motivation, their willingness to extend beyond the minimal level, significantly influences engagement. Honors students are engaged in experiences, curricular and extracurricular, that promote development, and the types of additional opportunities available to honors students and the feedback they receive affect participation. The interaction between honors students and their instructional environment may encourage them to engage with available resources more fully than non-honors students do
Expressed sequence tag analysis of genes expressed during development of the tropical abalone Haliotis asinina
The tropical abalone. Haliotis asinina. is,in ideal species to investigate the molecular mechanisms that control development. growth, reproduction and shell formation in all cultured haliotids. Here we describe the analysis of 232 expressed sequence tags (EST) obtained front a developmental H. asinina cDNA library intended for future microarray studies. From this data set we identified 183 unique gene Clusters. Of these, 90 clusters showed significant homology with sequences lodged in GenBank, ranging in function from general housekeeping to signal transduction, gene regulation and cell-cell communication. Seventy-one clusters possessed completely novel ORFs greater than 50 codons in length, highlighting the paucity of sequence data from molluscs and other lophotrochozoans. This study of developmental gene expression in H. asinina provides the foundation for further detailed analyses of abalone growth, development and reproduction
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