Early detection of trauma-related psychopathology is fundamental for preventing symptom escalation in adolescents, and this strategy can be carried out by developing accurate measures. The aim of this study is to provide preliminary evidence for the internal structure, construct validity, reliability, sensitivity, and specificity of a brief screening instrument for posttraumatic stress disorder (PTSD) and complex PTSD (C-PTSD) in general population adolescents. 1,501 Chilean adolescents participated by responding to the Brief PTSD scale (BPTSD) along with a battery of additional questionnaires. The internal structure of the eight-item BPTSD was assessed through exploratory and confirmatory factor analyses, while criterion validity was assessed through receiver-operating characteristic (ROC) curves. Confirmatory factor analysis (CFA) demonstrated a two-dimensional internal structure that is in accordance with literature regarding C-PTSD. Our results suggest that BPTSD may measure PTSD with complex features rather than C-PTSD. The scale showed adequate reliability, and criterion validity. The BPTSD is a brief, reliable, and simplyworded measure for PTSD symptoms and C-PTSD features in adolescents. Public Significance StatementPTSD and complex PTSD can be severe in adolescents. Detection of PTSD symptoms is fundamental for early intervention in trauma, but it requires simple yet effective measures. The adjusted BPTSD is a short and reliable measure that assesses PTSD symptoms and complex PTSD features in the general population, adolescents, and young people.

The aim of this study is to examine the relationship between the attachment style and perceived social support in Chilean adults with and without problematic substance use (N = 46). The attachment style was evaluated through the Ca-Mir questionnaire and social support through MOS questionnaire. Attachment insecurity was associated to problematic substance use, while attachment security in substance users was linked to a greater perceived social support. The use of substances would be a strategy for emotional regulation underlying attachment insecurity and low perceived social support. The results were discussed from an attachment perspective, given its relevance for psychotherapy in the context of rehabilitation in substance use.