0000000000027513
AUTHOR
Beatriz Delgado
Frecuencia del consumo de drogas legales: Diferencias de edad en la adolescencia
El consumo de drogas es especialmente relevante por sus efectos negativos sobre la salud psicofísica y el funcionamiento social de los jóvenes. El objetivo de este estudio fue analizar las diferencias de edad respecto a las frecuencias de consumo de alcohol y tabaco en una muestra de 354 escolares (50.85% varones) de 12 a 18 años (M = 14.66; DT = 1.08) que cumplimentaron el Questionnarie about Consume of Alcohol and Tobacco (TNT). Los resultados muestran que el 82.4% de los adolescentes ha consumido bebidas alcohólicas en alguna ocasión y el 25.6% es consumidor actualmente. Respecto al consumo de tabaco, el 40.4% de estudiantes afirma haber fumado en alguna ocasión, siendo consumidores actu…
The influence of transformational and authentic leadership on the satisfaction of hotel customers in the Canary Islands
Leadership provides a strategy to deal with intense competition and high customer expectations in the hotel industry. This paper analyses the ability of managers’ transformational and authentic leadership to predict customer satisfaction. A sample of 18,944 customers and managers of eight hotels in the Canary Islands was used for the analysis. The data were collected using the Multifactor Leadership Questionnaire-6s, the Authentic Leadership Questionnaire and ReviewPro management software. The data were analysed to confirm the ability of transformational and authentic leadership to predict overall customer satisfaction. The results indicate that the transformational subscales of idealised i…
Substituent effects on the reaction mode between 2-hydroxybenzyl alcohol derivatives and MEM chloride:synthesis and mechanistic aspects of seven-and ten-membered benzo-fused O,O-acetals
Abstract The synthesis of (RS)-2- or (RS)-3-methoxy-2,3-dihydro-5H-1,4-benzodioxepins and (RS)-5- or (RS)-3-methoxy-2,3,5,6-tetrahydro-8H-benzo-[1,4,7]-trioxecins has been developed. The mechanism of such a reaction via the boron trifluoride etherate-promoted transformation of 2-(methoxyethoxymethoxy)benzyloxyacetaldehyde dimethyl acetals or 2-(methoxyethoxymethoxymethyl)phenyloxyacetaldehyde dimethyl acetals has been proposed. Transannular versions of the reaction results in the facile ring contraction of 12-membered intermediates to the 10- and to 7-membered benzene-fused O,O-acetals. The characterization of the by-products strongly supports the mechanisms proposed.
Relationship between Cyberbullying, Motivation and Learning Strategies, Academic Performance, and the Ability to Adapt to University
Cyberbullying has become a frequent relational problem among young people, which has made it necessary to evaluate and prevent it in the university setting. The aim of this study is to examine the relationship between cyberbullying, motivation and learning strategies, the ability to adapt to university, and academic performance. A sample of 1368 Spanish university students (64% female) was administered a battery consisting of the European Bullying Intervention Project Questionnaire, the Learning and Study Strategies Inventory Short version, and the Student Adaptation to College Questionnaire, with their academic performance also being studied. The results found that the victimized bullies h…