The Alcohol, Smoking and Substance Involvement Screening Test (ASSIST), developed by the World Health Organization (WHO), has been used successfully in many countries, but there are few studies of its validity and reliability for the Mexican population. The objective of this study was to determine the psychometric properties of the selfadministered ASSIST test in university students in Mexico. This was an ex post facto non-experimental study with 1,176 undergraduate students, the majority women (70.1%) aged 18-23 years (89.5%) and single (87.5%). To estimate concurrent validity, factor analysis and tests of reliability and correlation were carried out between the subscale for alcohol and AUDIT, those for tobacco and the Fagerström Test, and those for marijuana and DAST-20. Adequate reliability coefficients were obtained for ASSIST subscales for tobacco (alpha = 0.83), alcohol (alpha = 0.76), and marijuana (alpha = 0.73). Significant correlations were found only with the AUDIT (r = 0.71) and the alcohol subscale. The best balance of sensitivity and specificity of the alcohol subscale (83.8% and 80%, respectively) and the largest area under the ROC curve (81.9%) was found with a cutoff score of 8. The self-administered version of ASSIST is a valid screening instrument to identify at-risk cases due to substance use in this population.Keywords: Screening test, ASSIST, university students, substance use, reliability, validity.Abstract Recibido: Noviembre 2014; Aceptado: Marzo 2015

IntroductionParental supervision is constituted by a series of correlated parental behaviors involving children care, knowing their where abouts, which activities they are performing, and the situation of their adaptive processes. In order for parental supervision to take place, it is necessary that communication and mutual support exist between mother and father, as well as between parents and children so that the family environment becomes pleasant. Supervision is one of the most studied factors related to anti-social behavior, and it has been observed that its absence or inconsistency allows for the occurrence of anti-social behavior, which in the more serious cases leads to delinquency.

BackgroundThe study about the misuse of inhalant solvents started in Mexico during the 1970, although the interest in this subject decreased during some periods, its consumption continued among the young population, thus, it is relevant to update the state of the art on this matter.

Introduction: the COVID-19 pandemic has increased exposure to stressors, which can lead to an increase in drug use as a coping mechanism. Due to the confinement, social networks represent an important means for dissemination of clear, reliable information on ways to prevent drug abuse, and the consequences of said abuse in the general population and among those most vulnerable to acquiring the virus and developing the most serious symptomatology of COVID-19. Objective: to disseminate scientific evidence-based information on alcohol, tobacco and drug use in the context of the COVID-19 contingency in Mexico. Method: we developed messages accompanied by images through the analysis of information on drug use and COVID-19 from a government institution. The messages were disseminated on two social networks to promote healthy behaviors, to increase the knowledge about risks associated to COVID-19 and drug use, and to encourage reflection. Results: the messages reached a total of 851,622 people and had up to 35,819 interactions on Facebook and Twitter. Discussion and conclusions: knowing the interactions in social networks allows to strategically incorporate specific information for different populations at risk. Having information from an institutional social network is a tool to prevent the dissemination of false or inaccurate information.

There is an urgent need to understand the needs of young people in rapidly developing urban spaces. Long-term studies that enable researchers and clinicians to look at aetiological factors that may affect development are required. The chapter investigates what has changed in the reporting of behavioural symptoms and syndromes in children living in Mexico City. Across all age groups, nervousness, restlessness, inattentiveness, irritability, and explosiveness have significantly increased. The relationship between the environment and psychological symptoms is of interest, especially in preschool children who are likely to be irritable. Depressive syndrome with both irritable and depressed mood as core symptoms show an increasing prevalence from preschool age to late childhood; depressive syndrome with only one core symptom, predominantly irritable mood, shows a consistent increase across all age groups. Explosiveness, possibly associated with brain damage, has significantly increased, most notably in older school-age children. This raises significant questions about the environment.