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One of the most widely used and studied instruments worldwide to assess the reasons for consuming alcohol is the Drinking Motives Questionnaire (DMQ) based on the Cox & Klinger (1988) model, of which different versions have been made and have shown different factorial structures. However, in Mexico the psychometric properties of the DMQ and its versions have not been studied. Objetive. Due to the need for an instrument to assess the reasons for alcohol consumption, this study set out to adapt and study some psychometric properties of the DMQ-R and its different versions in the Mexican adolescent population. Method. The longest version of the questionnaire (28 items) was administered to 464 adolescents between 13 and 18 years old (M = 16.20; SD = 1.24), in this sample n=179 were female (55.1%). Results. Five different versions of the test were fitted. The only model that obtained an adequate fit was that of the short version of 12 questions, which also showed adequate internal consistency indexes (α = .88 y ω = .94). Conclusion. The short version of the DMQ-R-12 is an instrument that has shown adequate construct validity and reliability to evaluate the reasons for alcohol consumption in Mexican adolescents. [ABSTRACT FROM AUTHOR]

Procrastination has been defined as an irrational delay in behavior associated with multiple negative consequences, among which the incidence in mental health is prominent. Given the importance of detecting irrational procrastination, this research proposed to adapt and study some psychometric properties of the IPS (Irrational Procrastination Scale) in the Mexican population. The 9-item IPS scale was applied to 960 university students between 18 and 56 years old (M= 21.31, SD= 3.77), with a majority of women (n= 566, 59.0%). The final version of seven items obtained a Cronbach's alpha of 0.803. Through an exploratory factor analysis with half of the sample, it was observed that the scale is unifactorial, explaining 46.07% of the variance. This was corroborated with the other half and by confirmatory factor analysis. It is concluded that IPS is a short and reliable instrument to detect irrational procrastination which can be an effective screening tool for the Mexican population. [ABSTRACT FROM AUTHOR]

Los trastornos de ansiedad actualmente son los trastornos mentales más frecuentes, y suponen un importante problema de salud en México, por ello es importante disponer de instrumentos para su detección. En la presente investigación se estudiaron algunas propiedades psicométricas de la escala Generalized Anxiety Disorder Inventory (GADI) en población universitaria de M orelia (México). Aplicamos la escala GADI junto a escalas que evalúan la presencia de ansiedad, preocupación patológica, sintomatología depresiva y gaudibilidad a una muestra de universitarios. Se aplicó un análisis factorial confirmatorio. Nuestros resultados corroboran la estructura de 3 factores de la versión original y de otros estudios. Se observó una elevada consistencia interna de la escala total (α =.928) y también resultó adecuada para los 3 factores. Respecto a las evidencias de validez concurrente, las correlaciones entre la escala GADI y las otras escalas fueron las esperadas. También se observó una elevada fiabilidad test-retest en un tiempo de 4 semanas. Los datos empíricos indican que la escala GADI presenta una validez y fiabilidad satisfactorias para población universitaria. Asimismo, se ofrecen datos descriptivos en población universitaria de Morelia (México). Anxiety disorders are the most frequent mental disorders and they represent an important health problem in Mexico, so it is important to detect them with the use of valid assessment instruments. The goal of our study is to establish several psychometric properties of the GADI (Generalized Anxiety Disorder Inventory) in college students of Morelia (Mexico). The GADI and other scales were applied to assess the presence of anxiety, pathological worry, depressive symptomatology and gaudiebility in a sample of university students. A confirmatory factor analysis was applied. Our results corroborate the three factor structure of the original version and other studies. We observed a high internal consistency of the total scale (α =.928) and also was adequate for the 3 factors. Regarding the evidence of concurrent validity, the correlations between the GADI scale and the other scales were as expected. High test-retest reliability was also observed in a period of four weeks. the empirical data indicate that the GADI presents satisfactory validity and reliability for college population. Likewise, descriptive data are offered in the university population of Morelia (Mexico). [ABSTRACT FROM AUTHOR]