Structural Equation Modeling of Spatial Presence: The Influence of Cognitive Processes and Traits

This article examines the formation process of spatial presence, which is conceived as a two-step process involving the construction of a mental model of the mediated environment, followed by the emergence of spatial presence. During both stages, cognitive processes and user traits are in effect. We present data derived from a pooled set of data of three studies using the same virtual environment. Structural equation modeling is used to confirm the proposed theoretical model. The results show that attention and the trait of visual spatial imagery are positive predictors of the mental model of the mediated environment. In the second step, the formation of spatial presence is governed by involvement, the suspension of disbelief, and the domain-specific interest, together with the mental model.     

Priming the mental time-line: effects of modality and processing mode

The notion of a mental time-line (i.e., past corresponds to left and future corresponds to right) supports the conceptual metaphor view assuming that abstract concepts like “time” are grounded in cognitively more accessible concepts like “space.” In five experiments, we further investigated the relationship between temporal and spatial representations and examined whether or not the spatial correspondents of time are unintentionally activated. We employed a priming paradigm, in which visual or auditory prime words (i.e., temporal adverbs such as yesterday, tomorrow) preceded a colored square. In all experiments, participants discriminated the color of this square by responding with the left or the right hand. Although the temporal reference of the priming adverb was task irrelevant in Experiment 1, visually presented primes facilitated responses to the square in correspondence with the direction of the mental time-line. This priming effect was absent in Experiments 2, 3, and 5, in which the primes were presented auditorily and the temporal reference of the words could be ignored. The effect, however, emerged when attention was oriented to the temporal content of the auditory prime words in Experiment 4. The results suggest that task demands differentially modulate the activation of the mental time-line within the visual and auditory modality and support a flexible association between conceptual codes.     

On the relationship between mobbing factors,and job content,social work environment,and health outcomes

Abstract

This article analyses the relationship between mobbing, job characteristics, social environment variables, and psychological ill-health. The Leymann Inventory of Psychological Terrorization (LIFT) was factor analysed and led to seven factors in two samples of mobbing victims (N = 50 and N = 99): Mobbing by organizational measures, social isolation, attacking the victim's private life, attacking the victim's attitudes, physical violence, verbal aggression, and rumours. Mobbing was correlated with bad job content, a bad social environment, and psychological ill-health. The findings suggest that the more social support supervisors gave, the less the victims reported being shouted at, being constantly criticized, and receiving verbal threats. In contrast, the more social support the victims received from their colleagues the less they reported being socially isolated or being ridiculed with regard to their private life. Moreover, having private life attacked showed the strongest correlation with psychological ill-health. The data suggest that organizational factors are potential causes of mobbing at work.     

The impact of accountability on teachers’ assessments of student performance: a social cognitive analysis

Research on teachers’ judgments of student performance has demonstrated that educational assessments may be biased or may more correctly take the achievements of students into account depending on teachers’ motivations while making the judgment. Building on research on social judgment formation the present investigation examined whether the accountability of teachers has an influence on judgment formation. We predicted that unaccountable teachers would activate social categories and use them for the assessment, whereas accountable teachers’ attention would be directed to individual attributes of students. Using secondary school teachers as participants, three studies investigating teachers’ assessments, inferences and memory for students’ attributes supported these hypotheses. Thus, accountability appears to be a moderator of social information processing and judgment formation in the domain of educational assessments.     

Work stress,work–home interference and perceptions of organisational culture amongst insurance employees in Zimbabwe

The objective of the study was to determine the relationship between work stress, work-home interference, and perceptions of organisational culture amongst insurance employees in the Zimbabwean context. Data were collected from a sample of 190 employees (females=46%) who completed the Occupational Stress Inventory-Revised (OSI-R), the Work-Home Interference Questionnaire (SWING), and the Organisational Culture Index (OCI). Data analysis consisted of correlational and standard multiple regression analyses. The results revealed significant positive correlations between the sub-scales Role Overload, Role Insufficiency, Role Ambiguity, Role Boundary, Responsibilities, and Physical Environment of the OSI-R, the sub-scales Positive Work-Home Interference and Negative Work-Home Interference of the SWING, and the sub-scales Bureaucratic, Innovative and Supportive Culture of the OCI. These findings contribute to new knowledge in terms of the work stress experienced by insurance employees who are always under continuous pressure from the industry. Furthermore, it could be used to gain insight to enhance the work-life balance of insurance employees and the effect of organisational culture as perceived by insurance employees.     

A comparison of visual and auditory representational momentum in spatial tasks

Similarities have been observed in the localization of the final position of moving visual and moving auditory stimuli: Perceived endpoints that are judged to be farther in the direction of motion in both modalities likely reflect extrapolation of the trajectory, mediated by predictive mechanisms at higher cognitive levels. However, actual comparisons of the magnitudes of displacement between visual tasks and auditory tasks using the same experimental setup are rare. As such, the purpose of the present free-field study was to investigate the influences of the spatial location of motion offset, stimulus velocity, and motion direction on the localization of the final positions of moving auditory stimuli (Experiment 1 and 2) and moving visual stimuli (Experiment 3). To assess whether auditory performance is affected by dynamically changing binaural cues that are used for the localization of moving auditory stimuli (interaural time differences for low-frequency sounds and interaural intensity differences for high-frequency sounds), two distinct noise bands were employed in Experiments 1 and 2. In all three experiments, less precise encoding of spatial coordinates in paralateral space resulted in larger forward displacements, but this effect was drowned out by the underestimation of target eccentricity in the extreme periphery. Furthermore, our results revealed clear differences between visual and auditory tasks. Displacements in the visual task were dependent on velocity and the spatial location of the final position, but an additional influence of motion direction was observed in the auditory tasks. Together, these findings indicate that the modality-specific processing of motion parameters affects the extrapolation of the trajectory.     

Cognitive functions of gamma-band activity: memory match and utilization

Oscillatory neural activity in the gamma frequency range (>30Hz) has been shown to accompany a wide variety of cognitive processes. So far, there has been limited success in assigning a unitary basic function to these oscillations, and critics have raised the argument that they could just be an epiphenomenon of neural processing. We propose a new framework that relates gamma oscillations observed in human, as well as in animal, experiments to two underlying processes: the comparison of memory contents with stimulus-related information and the utilization of signals derived from this comparison. This model attempts to explain early gamma-band responses in terms of the match between bottom-up and top-down information. Furthermore, it assumes that late gamma-band activity reflects the readout and utilization of the information resulting from this match.     

Cosmology, Cosmic Evolution, and Sacramental Reality: A Christian Contribution

From the Christian perspective, creation exists through the Word of God. The Word of God does not create God again but brings forth the absolute "otherness" of God: creation. The nature of God is to exist. God is existence as unity in the diversity of God the Father, the Son, and the Holy Spirit. The gift of created existence reflects the triune nature of the Word of God. It is synthesis of diversity into unity that creates. Nature brings forth new existence by unifying what it already brought forth previously. Therefore, the creative process of nature is self-similar and nonlinear: self-similar because at all levels it is synthesis that brings forth novelty; nonlinear because the properties of the new unities are not present in their (isolated) elements. The new properties of the wholes, however, do not destroy the properties of the parts. Rather, the elements integrated into new wholes become creatively transformed. This is because the parts become carriers of the whole, which transforms the parts through its presence. The parts become and express the qualities of the whole, qualities that the parts do not possess in isolation. Synthesis, therefore, transforms the parts creatively, because synthesis is creative. The qualities of the parts become "elevated" because the whole becomes present in and through the parts. The understanding of creation as the result of sequential, creative transformations offers a glance into the mystery of the Word of God present in the Eucharist. Here, too, the elements of bread and wine are not destroyed but elevated, creatively transformed into the Word of God. The elements (bread and wine) become the carrier of a transcendent "quality," the Word of God. From this perspective, creation and the sacrament of the Eucharist illuminate each other. This is because the Word of God that creates the otherness of creation and the Word of God present in the Eucharist is the same.