Dynamic Modeling and Simulation of How Information Sharing Influences Supply Chain Performance

With the growing intensity of cooperation, the partners in the manufacturing supply chain (SC) raise stricter requirements for information sharing (IS) within the SC, which has been an effective capability to improve the performance of manufacturing SC. To reveal the influence of IS on SC performance, this paper firstly carries out a theoretical analysis on the influencing factors of IS, SC integration and SC performance, and builds a theoretical model of the IS’s impacting on SC performance. Next, valid index data were obtained by investigating typical manufacturing enterprises in Yangtze River Delta region of China. Then, according to the dynamics system flow of IS influence on SC performance, the proposed theoretical model would be modeled from system dynamics and simulated by Vensim PLE software. The results show that IS among manufacturing SC nodes enhances the SC performance via SC integration; when SC integration is suitable for IS, SC performance will be improved as long as the IS amount is greater than zero; however, excessive IS would reduce the quality and weaken the amount of IS; overall, the degree of IS and SC integration are the key to better SC performance. This implies that how to improve IS among SC partners is a very important thing in manufacturing SC management. And, it also enlightens that enterprise managers should pay attention to establish a high-level trust relationship with SC partners, achieve high-quality IS with a wider range, and then promote the SC system more integrated to improve its operational performance.

Heart Rate Variability and Decision-Making: Autonomic Responses in Making Decisions

Decision-making is one of the most crucial cognitive processes in daily life. An adaptable, rapid, and flexible decision requires integration between brain and body. Heart rate variability (HRV) indexes this brain–body connection and appears to be related to cognitive performance. However, its relationship with decision-making is poorly analyzed. This study investigates the relationship between HRV and the decision-making process, assessed through the Iowa Gambling Task (IGT). One hundred and thirty healthy university students (mean age = 23.35 ± 2.50) participated in the study. According to IGT performance, they were divided into high decision-makers (n = 79) and low decision-makers (n = 51). Heart rate variability was measured in the resting, reactivity (i.e., during IGT), and recovery phases. Higher vagally mediated HRV (vmHRV; indexed in frequency domain measures) was evidenced in good decision-makers in the resting, reactivity, and recovery phases. During the task, a higher vagal modulation after a first evaluation was highlighted in good decision-makers. In conclusion, HRV proves to be a valid index of inhibitory circuit functioning in the prefrontal cortex. The relationship with cognitive functions was also confirmed, considering the ability to inhibit disadvantageous responses and make better decisions.

Measurement Discrepancies Between Logged and Self-Reported Digital Media Use: A Systematic Review and Meta-Analysis

The influence of digital media on personal and social well-being is a question of immense public and academic interest. Scholars in this domain often use retrospective self-report measures of the quantity or duration of media use as a proxy for more objective measures, but the validity of these self-report measures remains unclear. Recent advancements in log-based data collection techniques have produced a growing collection of studies indexing both self-reported media use and device-logged measurements. Herein, we report a meta-analysis of this body of research. Based on 104 effect sizes, we found that self-reported media use was only moderately correlated with device-logged measurements, and that these self-report measures were rarely an accurate reflection of logged media use. These results demonstrate that self-reported measures of the quantity or duration of media use are not a valid index of the amount of time people actually spend using media. These findings have serious implications for the study of media use and well- being, suggesting that cautiousness is warranted in drawing conclusions regarding media effects from studies relying solely on self-reported measures of media use.

Housing deterioration: a multi-dimensional index and validation in shared refugee accommodation

Background Asylum seekers and refugees (ASR) are struggling for residential autonomy while awaiting the results of their asylum case. As housing is a known upstream determinant of and fundamental resource for health, it is important to monitor housing quality of state-provided shared refugee accommodation. We constructed, validated and field-tested a new and quick-to-apply index to measure the degree of Small-area Housing Environment Deterioration (SHED). Methods Conceptualizing housing quality as characteristics and maintenance of physical environment, we developed the SHED based on the “Broken Windows”-index (BWI). We conducted a validation study with seven raters at two time points, assessing measures of inter-/intra-rater reliability and internal consistency, complemented by cognitive interviews. Further, we field-tested the index in a random sample of 58 shared refugee accommodations and assessed its convergent validity against ASR's satisfaction with their living places (EUROHIS QOL). Results SHED assesses five domains (windows/glass, walls/roof, garbage, graffiti, outside spaces), complemented by a rating of the overall living environment. The validation study delivered an 'almost perfect' prevalence- and bias-adjusted Kappa (PABAK) of 0.87 (0.82-0.91) for intra-rater, 'substantial' to 'almost perfect' PABAK's between 0.71 (0.52-0.91) and 0.91 (0.87-0.91) depending on the rater (all p < 0.001), and a Cronbach's α of 0.80. The index's construct validity is based on the BWI and converges with the ASR's subjective satisfaction with their living places. Cognitive interviewees enjoyed the simplicity and speed of the SHED and guided the creation of a manual for future use. Conclusions The index demonstrated high measures on objectivity, reliability, and internal consistency. It proved its applicability in a field-test and showed convergent validity with ASR's satisfaction with their living place within shared refugee accommodation. Key messages We have constructed an objective, reliable, internally consistent and valid index assessing the degree of deterioration of small-area housing environment. SHED offers opportunities for monitoring the physical quality of collective accommodation centres and filling the research gap on associations between housing quality and health.

Religiosity’s Nomological Network and Temporal Change

Countries differ in their religiosity and these differences have been found to moderate numerous psychological effects. The burgeoning research in this area creates a demand for a country-level religiosity index that is comparable across a large number of countries. Here, we offer such an index, which covers 166 countries and rests on representative data from 1,619,300 participants of the Gallup World Poll. Moreover, we validate the novel index, use it to examine temporal change in worldwide religiosity over the last decade, and present a comprehensive analysis of country-level religiosity’s nomological network. The main results are as follows. First, the index was found to be a valid index of global religiosity. Second, country-level religiosity modestly increased between 2006 and 2011 and modestly decreased between 2011 and 2017 – demonstrating a curvilinear pattern. Finally, nomological network analysis revealed three things: it buttressed past evidence that religious countries are economically less developed; it clarified inconsistencies in the literature on the health status of inhabitants from religious countries, suggesting that their psychological and physical health tends to be particularly good once economic development is accounted for; and finally, it shed initial light on the associations between country-level religiosity and various psychological dimensions of culture (i.e., Hofstede’s cultural dimensions and country-level Big Five traits). These associations revealed that religious countries are primarily characterized by high levels of communion (i.e., collectivism and agreeableness). We are optimistic that the newly presented country-level religiosity index can satisfy the fast-growing demand for an accurate and comprehensive global religiosity index.

All talk? Left temporal alpha oscillations are not specific to verbal-analytical processing during conscious motor control

The present study tested the validity of inferring verbal-analytic motor processing from EEG left-temporal alpha activity. Participants (n = 20) reached for and transport a jar under three conditions: one control condition and two self-talk conditions aimed at eliciting either task-unrelated verbal processing or task-related conscious control, while 32-channel EEG and kinematics were recorded. Compared to the control condition, both self-talk conditions elicited greater self-reported levels of verbal processing, but only the task-related self-talk condition was accompanied by greater left temporal activity (i.e., EEG alpha power decreased) during movement production. However, this increase was not localised to the left temporal region but was rather evident over all scalp regions examined, suggesting an interpretation more consistent with diminished neural efficiency. No effects for left temporal-frontal (T7-Fz) connectivity were detected across conditions. Our results failed to endorse left-temporal EEG alpha activity as valid index of verbal-analytic processing during motor tasks.

A multi-methodology on building a corporate governance index from the perspectives of academics and practitioners for firms in Greece

Purpose The purpose of this paper is to look inside the “black box” in corporate governance (CG) measurement, and shed some light on how to construct a transparent, reliable and valid index, considering equally both the academics and practitioners’ perspectives. Design/methodology/approach A synthesized literature review is presented and a CG index is developed combining the strengths of three different methodologies: the Delphi method, the classical test theory (CTT) and the analytic hierarchy process (AHP). This approach helps authors to break the process into separate steps and to select the appropriate techniques to support their decision regarding the norms, the criteria, the variables and the weights that someone should use to construct a CG index. Findings The authors’ analysis indicates that a well-designed CG index requires a combination of research methods to identify the best options to solve several methodological issues in index construction. For the application of this multi-methodology in Greece, the authors used two equal and independent samples to explore the different perspectives regarding the importance of the index criteria and sub-criteria. This process provides evidence that the opinion of academics and practitioners in Greece tend to converge. Moreover, it is found that this multi-methodology produces the highest variation in CG scores and ranking orders, as opposed to a traditional approach, in measuring CG disclosure, an important issue with econometric implications. Research limitations/implications The limitations of this study are associated with the methods used. Practical implications This paper provides practical implications for investors and commercial vendors. For the former, it highlights the need to be more cautious and/or suspicious when they use CG ratings, meaning that they should comprehend the base of the ratings models, and for the latter, it demonstrates the importance of enhancing the transparency in CG indices construction. Originality/value The value of the paper lies in improved understanding of the methodological issues in constructing CG indices. This is quite interesting because this approach could serve as a roadmap for other researchers.