This study examines the association between problematic internet use, or internet addiction, and adolescent mental health, focusing on key psychological variables, assessing the strength of these associations, and identifying potential moderating factors. Methods: A search of the Web of Science databases over the past five years identified 830 articles. Of these, 33 met the inclusion criteria, involving 303,243 participants (average age 14.57; 49.44% female). The selection process was verified by two researchers. Results: Nine psychological variables were analyzed: depression, anxiety, stress, suicidal behaviour, psychological well-being, self-esteem, externalizing problems, aggressiveness, and impulsiveness. Internet addiction showed positive correlations with aggressiveness (r+ = 0.391), depression (r+ = 0.318), anxiety (r+ = 0.252), and suicidal behaviour (r+ = 0.264). Negative correlations were observed with psychological well-being (r+ = −0.312) and self-esteem (r+ = −0.306). No significant associations were found for externalizing problems, impulsiveness, or stress. None of the moderators showed a significant correlation with internet addiction and depression. Conclusions: Although limited by small sample sizes for some variables and the cross-sectional design of most studies, the findings confirm that there is a negative relationship between internet addiction and adolescent mental health. It is related to poorer self-perceived health, greater psychological distress, and greater aggression.

El consumo de alcohol presenta perfiles diferenciales entre hombres y mujeres, existiendo diferencias igualmente respecto al curso y pronóstico de los problemas derivados del abuso de alcohol. Existe evidencia acerca de estas diferencias en función del sexo, pero la investigación acerca de su relación con diferencias en función de dimensiones asociadas al género es más escasa. Con el objetivo de conocer qué es lo que se ha investigado sobre el tema, se revisa la literatura acerca de la relación entre la conformidad con las normas de género y consumo de alcohol en adultos. Se llevó a cabo una revisión sistemática de la literatura sobre el tema en las bases de datos PubMed, PsycINFO y ScienceDirect. Se incluyeron y analizaron 24 estudios publicados en inglés o español. Los resultados más importantes fueron: 1) la conformidad con normas asociadas al rol tradicional masculino (dominancia, donjuanismo, agresividad, conductas de riesgo) está relacionada, en general, con un mayor consumo de alcohol; 2) la conformidad con normas asociadas al rol tradicional femenino (interés en vida hogareña y cuidado de la familia) se asocia con menor consumo de alcohol. Estos hallazgos proporcionan evidencia acerca de la relación entre dimensiones asociadas al género y el consumo de alcohol. Se considera que las posibilidades de modificación de las creencias y patrones de género vinculados con comportamientos de riesgo es un aspecto a considerar en el ámbito de la prevención, siendo el desarrollo de medidas de género una tarea necesaria para continuar profundizando en el estudio de estas relaciones.

One of the current trends in the study of criminal profiling consists of developing theoretical and methodological typologies to offer information of operational use in police investigations. The objective of this work was to verify the validity of the instrumental/expressive model, so as to establish homicide typologies based on modus operandi relationships, characteristics of the victims, and characteristics of perpetrators. The sample consisted of 448 homicide cases registered in the database of the Homicide Revision Project of the Office of Coordination and Studies of the Spanish Secretary of State and Security. Through multidimensional scaling and cluster analysis, three expressive homicide subtypes were identified (expressive-impulsive, expressive-distancing, and expressive-family), as well as two instrumental homicide subtypes (instrumental-opportunist and instrumental-gratification). The expressive homicide typologies accounted for almost 95% of all of the studied cases, and most of the homicides occurring in Spain were found to take place between individuals who know one another (friends, family members, intimate couples/ex-couples). The findings from this study suggest that the instrumental/expressive model may be a useful framework for understanding the psychological processes underlying homicides, based on the study of relationships between the crime and aggressor characteristics, which may be very helpful in the prioritization of suspects.

One of the current trends in homicide research includes developing works based on scientific study and empirical evidence, which offer conclusions that can be used in an operational manner during police investigations. The objective of this study was to identify homicide characteristics from behaviors carried out on the crime scene and victim characteristics associated with those of the perpetrators of these crimes in Spain. The sample consisted of 448 homicide cases from the database of the Homicide Revision Project led by the Office of Coordination and Studies of the Secretary of State and Security. After creating six classification tree models, it was found that the modus operandi of the aggressor and the victim characteristics may permit hypothesizing about the demographic characteristics of the perpetrator (gender, age, and country of origin), his/her criminal record, and the type of relationship with the victim. Furthermore, the importance of the study of victimology during a criminal investigation is highlighted, as it may indirectly offer information about the potential perpetrator. The findings of this study suggest that criminal profiling contributes notably to the decision-making process to establish more rigorous suspect prioritization, improve the management of human resources and materials, and increase the efficiency of criminal investigations.

Objetivo: El objetivo del presente estudio fue evaluar la Calidad de Vida Relacionada con la salud (CVRS) en personas con Esclerosis Múltiple (EM) mediante el cuestionario MSQOL-54 y analizar su relación con la salud de las personas cuidadoras principales a través del cuestionario GHQ-12 y un cuestionario de salud física autopercibida. Metodología: Se evaluó a 115 personas con diagnóstico de EM y a 79 personas cuidadoras principales. Resultados: Los resultados obtenidos señalan la significativa afectación de la CVRS de las personas con EM y su relación con la salud de las personas cuidadoras principales. Se encontraron relaciones significativas entre la salud física y mental de la persona con EM y un mayor número de enfermedades, peor salud mental y menor autopercepción de salud en la persona cuidadora. Conclusiones: Los resultados obtenidos señalan la significativa afectación de la CVRS de las personas con EM y su relación directa con la salud de las personas cuidadoras principales. Objective: The aim of the present study was to evaluate the health-related quality of life (HRQoL) in patients with Multiple Sclerosis (MS) through the MSQOL-54 questionnaire and to analyse its relationship with the health of primary caregivers through the GHQ-12 questionnaire and a questionnaire on self-perceived physical health. Materials and Methods: A total of 115 subjects diagnosed with MS and 79 primary caregivers were evaluated. Results: The results obtained show the significance of effects on HRQoL of patients with MS and its relationship to the health of primary caregivers. Significant relationships were found between the physical and mental health of the person with MS and an increased number of illnesses, poorer mental health and lower self-perception of health in the caregiver. Conclusions: The results obtained point to the significant impairment of the HRQoL of people with MS, and its direct relationship with the health of primary caregivers.