Introduction: Extremism and the justification of violent and illegal acts among young people is one of the major concerns of democratic societies. We have not found any instrument that measures violent extremism among young people in Spain. The purpose of this study is to validate and evaluate the psychometric properties of the Spanish version of…

The rise and growing prevalence of juvenile delinquency is a matter of concern for many parties. This study aims to establish a research instrument in the form of a questionnaire that can be deployed to assess the learning environment perceived by high school students. This research endeavor constitutes a developmental study, wherein the outcomes…

Using a large sample of students (N=1373; 40% girls; Mage =14 years) from 54 classrooms in South Korea, this study identified subtypes of bullies based on specific combinations of self-reports and peer-reports and examined the intrapersonal and interpersonal factors that explain the differences in characteristics between these identified groups.…

This study examined the clinical utility of the Massachusetts Youth Screening Instrument--Second Version (MAYSI-2) among African American (AA) incarcerated youth and used White incarcerated youth as a comparison group. Data were analyzed for 314 incarcerated youth (193 AA offenders and 121 White offenders) of ages 13-17 years who were adjudicated…