Polar constituents composition of endemic Sideritis italica (MILL.) GREUTER et BURTER from Central Italy

Endemic Sideritis italica (MILL.) GREUTER et BURTER (Lamiaceae) occurs mainly in Southern Italy and Sicily and has previously only been studied for the essential oil composition. In this paper, we complete the phytochemical study of a sample of S. italica, previously analysed for its volatile constituents, occurring in the Appennino Umbro-Marchigiano (Central Italy), which is the northern border of the areal distribution of the species. The analysis of medium polarity constituents led to the isolation of several glycosides, such as flavonoids, i.e. scutellarein derivatives; phenylethanoids, i.e. verbascoside; and iridoids, i.e. melittoside and 5-allosyloxy-aucubin, besides the diterpene siderol. The data reported have chemotaxonomic relevance, since they are in contrast with the hypothesis that in Lamiaceae the species producing iridoids do not usually have relevant essential oil production and vice versa

Chemical composition and antimicrobial activity of the essential oil from aerial parts of Micromeria debilis

International audienc

Measurement invariance of the Satisfaction With Life Scale across 26 countries

The Satisfaction With Life Scale (SWLS) is a commonly used life satisfaction scale. Cross-cultural researchers use SWLS to compare mean scores of life satisfaction across countries. Despite the wide use of SWLS in cross-cultural studies, measurement invariance of SWLS has rarely been investigated, and previous studies showed inconsistent findings. Therefore, we examined the measurement invariance of SWLS with samples collected from 26 countries. To test measurement invariance, we utilized three measurement invariance techniques: (a) multigroup confirmatory factor analysis (MG-CFA), (b) multilevel confirmatory factor analysis (ML-CFA), and (c) alignment optimization methods. The three methods demonstrated that configural and metric invariances of life satisfaction held across 26 countries, whereas scalar invariance did not. With partial invariance testing, we identified that the intercepts of Items 2, 4, and 5 were noninvariant. Based on two invariant intercepts, factor means of countries were compared. Chile showed the highest factor mean; Spain and Bulgaria showed the lowest. The findings enhance our understanding of life satisfaction across countries, and they provide researchers and practitioners with practical guidance on how to conduct measurement invariance testing across countries

Individualism-collectivism as a moderator of the work demands-strains relationship: A cross-level and cross-national examination

Item does not contain fulltextSurveying 6509 managers from 24 countries/geopolitical entities, we tested the process through which individualism-collectivism at the country level relates to employees' appraisals of and reactions to three types of work demands (i.e., work hours, workload, and organizational constraints). Our multilevel modeling results suggested that, while working the same number of hours, employees from individualistic countries reported a higher perceived workload than their counterparts in collectivistic countries. Furthermore, relationships of perceived workload and organizational constraints with job dissatisfaction and turnover intentions were stronger in individualistic than in collectivistic countries. Importantly, results of supplementary analyses suggested that the cultural value of individualism-collectivism moderated the mediation effect of perceived workload between work hours and both job dissatisfaction and turnover intentions. Our findings highlight the need to expand contemporary theories of work stress by applying multilevel approaches and incorporating cross-national differences in dimensions such as individualism-collectivism while studying how employees appraise and react to important work stressors.20 p