El uso de pruebas no paramétricas resulta recomendable cuando los datos a analizar no cumplen los supuestos de normalidad y homocedasticidad. Sin embargo, la suposición de la normalidad de los datos o el empleo de pruebas de bondad de ajuste que no son adecuadas para el tamaño muestral empleado son aspectos habituales. Este hecho implica, en muchas ocasiones, el uso de pruebas estadísticas no ajustadas al tipo de distribución real y, consecuentemente, el establecimiento de conclusiones erróneas. Por ello, en el presente estudio se ha analizado el poder de detección de cinco pruebas de bondad de ajuste -Kolmogorov-Smirnov, Kolmogorov-Smirnov-Lilliefors, Shapiro-Wilk, Anderson-Darling y Jarque-Bera- en distribuciones simétricas con seis tamaños muestrales entre 30 y 1.000 participantes generados mediante una simulación Monte Carlo. Los resultados muestran una tendencia conservadora generalizada a medida que se incrementa el tamaño muestral. En cuanto a los tamaños muestrales, las pruebas con un mejor poder detección de la no normalidad son Kolmogorov-Smirnov-Lilliefors y Anderson-Darling para muestra pequeñas, la prueba de Kolmogorov-Smirnov si se emplean tamaños muestrales medios -200 participantes- y la prueba de Shapiro-Wilk cuando se analizan muestras superiores a 500 participantes. Además, la prueba clásica de Kolmogorov-Smirnov se considera absolutamente ineficaz independientemente del tamaño muestral.

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Backgrounds: The high rates of school dropout worldwide and their relevance highlight the need for a close study of its causes and consequences. Literature has suggested that school dropout might be explained by multiple causes at different levels (individual, family, school, and neighborhood). The aim of the current study is to examine the relation between individual (defiant attitude, irresponsibility, alcohol abuse, and illegal drugs use), family (educational figure absent and parental monitoring), school factors (truancy and school conflict) and school dropout.Method: Judicial files of all juvenile offenders (218 males and 46 females) with a judicial penal measure in Asturias (Spain) in the year 2012 were examined. Multivariate logistic regression analyses were performed to estimate the relationships between school dropout and individual, family and school variables.Results: As for the individual characteristics, results showed that school dropouts were more irresponsible than non-dropouts. Also they had higher rates of illegal drug use and alcohol abuse. Moreover, lack of parental monitoring emerged as a key predictive factor of school dropout, beyond the type of family structure in terms of the presence of both or only one educational figure. Finally, school factors did not show a significant relationship to school dropout.Conclusions: These findings indicate that school dropout is a multidimensional process. School and family policies that emphasize the role of parental monitoring and prevent alcohol and substance abuse are recommended.

Objective: The influence of partners’ traditional gender role and partners’ level of general violence on intimate partner violence (IPV) against women has been studied separately most likely because they represent key aspects of apparently contrasting theoretical views. The main goal of the present study was to investigate the influence of both partners’ gender role and partners’ level of general violence on IPV against women. Method: Using data from 20,663 heterosexual women living with their partners from a probabilistic sample of 18- to 74-year-old women in the European Union, we investigated the association among physical and psychological IPV against women, partners’ traditional roles, and partners’ level of general violence. Results: The multilevel regression results indicated that, even after controlling for a number of interviewer, respondent, partner, and country-level characteristics, partners’ traditional gender role and partners’ level of general violence (main effects) were predictive of higher rates of physical and psychological IPV against women. Moreover, the greatest levels of IPV were observed in women who described their partners as both traditional and generally violent (interaction effect). Conclusions: The influence of partners’ traditional gender role and partners’ level of general violence on IPV against women has rarely been studied together most likely due to the apparently conflicting underlying theoretical assumptions. Our study provides empirical support for both views and suggests that intervention efforts focusing on both gender-based and non–gender-based violence are legitimate strategies for reducing the rates of IPV against women in society.

After more than four decades of study, now there is strong empirical evidence available to researchers on the main correlates of IPV against women. These correlates are in personal, family, community, and even socio-structural domains. The members of the couple may present individual characteristics that make them prone to the use of IPV (Capaldi & Kim, 2007; Cavanaugh & Gelles, 2005). Aspects such as their personality profile, with a special incidence of cluster-B personality profile, which includes narcissistic, antisocial, histrionic, and borderline personality, have been associated with IPV (