Abstract
The goal of this study was to compare prevalence of certain violent behaviors at the same educational level in two cross-sectional studies; the first one, carried out during the 2004-2005 academic course, and the second one three years later, during the 2007-2008 academic course. For this purpose, a total sample of 1.475 subjects, between 14 and 16 years of age, was analyzed. The results show that there is a significant decrease in the prevalence of almost all the violent behaviors analyzed, such as: insults, fights, etc., during the above-mentioned academic courses. However, the females suffer more indirect verbal aggression and, in contrast, the males perform this kind of behavior more frequently.
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