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181.
Item parceling remains widely used under conditions that can lead to parcel-allocation variability in results. Hence, researchers may be interested in quantifying and accounting for parcel-allocation variability within sample. To do so in practice, three key issues need to be addressed. First, how can we combine sources of uncertainty arising from sampling variability and parcel-allocation variability when drawing inferences about parameters in structural equation models? Second, on what basis can we choose the number of repeated item-to-parcel allocations within sample? Third, how can we diagnose and report proportions of total variability per estimate arising due to parcel-allocation variability versus sampling variability? This article addresses these three methodological issues. Developments are illustrated using simulated and empirical examples, and software for implementing them is provided. 相似文献
182.
Structural vector autoregressive models (VARs) hold great potential for psychological science, particularly for time series data analysis. They capture the magnitude, direction of influence, and temporal (lagged and contemporaneous) nature of relations among variables. Unified structural equation modeling (uSEM) is an optimal structural VAR instantiation, according to large-scale simulation studies, and it is implemented within an SEM framework. However, little is known about the uniqueness of uSEM results. Thus, the goal of this study was to investigate whether multiple solutions result from uSEM analysis and, if so, to demonstrate ways to select an optimal solution. This was accomplished with two simulated data sets, an empirical data set concerning children's dyadic play, and modifications to the group iterative multiple model estimation (GIMME) program, which implements uSEMs with group- and individual-level relations in a data-driven manner. Results revealed multiple solutions when there were large contemporaneous relations among variables. Results also verified several ways to select the correct solution when the complete solution set was generated, such as the use of cross-validation, maximum standardized residuals, and information criteria. This work has immediate and direct implications for the analysis of time series data and for the inferences drawn from those data concerning human behavior. 相似文献
183.
The goal of the present study was to explore how anger reduction via a single session of meditation might be measured using psychophysiological methodologies. To achieve this, 15 novice meditators (Experiment 1) and 12 practiced meditators (Experiment 2) completed autobiographical anger inductions prior to, and following, meditation training while respiration rate, heart rate, and blood pressure were measured. Participants also reported subjective anger via a visual analog scale. At both stages, the experienced meditators’ physiological reaction to the anger induction reflected that of relaxation: slowed breathing and heart rate and decreased blood pressure. Naïve meditators exhibited physiological reactions that were consistent with anger during the pre-meditation stage, while after meditation training and a second anger induction they elicited physiological evidence of relaxation. The current results examining meditation training show that the naïve group’s physiological measures mimicked those of the experienced group following a single session of meditation training. 相似文献
184.
Loes Meeussen Hans van Dijk 《European Journal of Work and Organizational Psychology》2016,25(2):200-211
Theory and research on status attainment in work groups primarily focuses on members’ abilities and characteristics that make them appear competent as predictors of their status in the group. We complement the abilities perspective with a social identity perspective by arguing that another important determinant of a member’s status is based on the extent to which the member serves the group’s interests. Specifically, we assert that a member’s identification with the group affects performance on behalf of the group, which in turn affects other members’ assessment of the member’s status. We test this social identity perspective on status attainment by studying the influence of members’ group identification on their performance and status in the group, while controlling for the members’ abilities and status characteristics. In a three-wave longitudinal field study following 33 work groups during a six-month group project, we find that members’ identification enhances their performance on behalf of the group, which in turn increases their status within the group. As such, our study advances insights in the determinants of status attainment in work groups and points to the relevance of the social identity approach for research on the antecedents of status in work groups. 相似文献
185.
ObjectivesRecent research has reported the benefits of using holistic rather than part process goals to avoid the negative effects associated with the conscious processing of task relevant information by skilled but anxious athletes. This experiment compared the efficacy of these two goal focus strategies in a neutral condition and a competitive condition in which cognitive state anxiety was elevated.DesignLaboratory-based experimental design using a mixed model with between (process goal groups) and within-subjects (neutral and competitive) conditions.MethodThirty male and female undergraduate students aged between 19 and 44 years of age completed 896 practice repetitions of a race car driving simulation using discovery learning. Participants were then placed in either a holistic or part process goal group using stratified random assignment. The practice phase was followed by neutral and competitive conditions, during which driving performance and psychophysiological measures were collected.ResultsAnalysis of variance of lap times and driving errors revealed that the holistic process goal group outperformed the part process goal group in the competition condition. Analysis of psychophysiological measures suggested that the performance of both process goal groups in the competitive condition was associated with the investment of compensatory effort.ConclusionsCompared to part process goals, holistic process goals confer performance benefits for skilled athletes who perform under competitive pressure. 相似文献
186.
Ruggero Andrisano-Ruggieri Pietro Crescenzo Rosa Ambrosio Gaetano Pinto Francesco Grieco 《Psychodynamic Practice》2016,22(3):236-252
Current literature on the dual diagnosis in cases of schizophrenia and alcohol dependence has reported how pharmacological treatment has positive effects on the reduction of both disorders. Nevertheless, patients have considerable difficulties in following the prescribed medication. This work aims to build an engagement stage and therapeutic relationship in seven patients with schizophrenic and alcohol-related disorder cases. This result was achieved through the use of the vignette technique and narrative psychodynamic approach during group counselling sessions. Positive and Negative Symptoms Scale (PANSS) and Munich Alcoholism Test (MALT) were applied before and after treatment. A follow-up session was organized. The PANSS and MALT scores indicated there was no reduction of the psychiatric symptoms after treatment. The follow-up session showed positive outcomes in terms of increasing the level of socialisation as well as awareness of their own condition; at the same, an adherence to pharmacological treatment and psychotherapy for all the subjects. 相似文献
187.
The purpose of the present study was to investigate the coordination pattern and coordination variability (intra-subject and inter-subject) in children and adults during vertical countermovement jumps. Ten children (mean age: 11.5 ± 1.8 years) and ten adults (mean age: 26.1 ± 4.9 years) participated in the experiment. Lower body 3D-kinematics and kinetics from both legs were obtained during 9 vertical jumps of each subject. Coordination pattern and coordination variability of intra-limb and inter-limb coupling were established by modified vector coding and continuous relative phase. The adult group jumped higher and with less performance variability compared to the children. Group differences were mainly observed in the right–left foot coupling. The intra-subject coordination variability was higher in coupling of proximal segments in children compared to adults. No group differences were observed in inter-subject variability. Based on these results, it was concluded that the same movement solutions were available to both age groups, but the children were less able to consistently utilize the individually chosen coordination pattern. Thus, this ability appears to be developed through normal ontogenesis. 相似文献
188.
Adaptations in lower limb movement patterns were examined when performance was maintained during a fatiguing repetitive loading task. Forty recreationally active male and female participants performed single-leg hopping to volitional exhaustion at 2.2 Hz to a submaximal height. Spatio-temporal characteristics, mechanical characteristics and variability of the knee-ankle and hip-knee joint couplings were determined at 20% increments during the duration of the hopping task. Variability of the knee-ankle and hip-knee couplings in the flexion/extension axis significantly increased during the loading and propulsion phases during the hopping task (p < 0.05). Performance (vertical stiffness, hopping frequency and height) did not change significantly during the task (p > 0.05), however foot contact time increased progressively during this task (p < 0.05) and maximum hop height significantly decreased after the task (p < 0.05). The observed increase in variability between adjoining lower limb segments demonstrated the ability of the neuromotor system to adapt and maintain performance even with the onset of fatigue. This finding highlights that during the performance of a rapid and repetitive loading activity, performance can be preserved when there is variability in the neuromotor system. 相似文献
189.
190.
Religious identification and interreligious contact in Indonesia and the Philippines: Testing the mediating roles of perceived group threat and social dominance orientation and the moderating role of context
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Agnieszka Kanas Peer Scheepers Carl Sterkens 《European journal of social psychology》2016,46(6):700-715
This study integrates three theoretical perspectives provided by social identity theory, realistic group conflict theory, and social dominance theory to examine the relationship between religious identification and interreligious contact. It relies on a unique dataset collected among Christian and Muslim students in ethnically and religiously diverse regions of Indonesia and the Philippines, where social cleavages occur along religious lines. Religious identification directly predicts a higher quality of interreligious contact, whereas it indirectly predicts a lower quantity and quality of contact, mediated by higher perception of group threat, and a higher quality of contact, mediated by lower social dominance orientation. Furthermore, these direct and indirect relationships are moderated by religious group membership and relative group size. We conclude that religious identification functions as a ‘double‐edged sword’ predicting both higher quality and lower quantity and quality of interreligious contact through various pathways and with a varying strength depending on intergroup context. 相似文献