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Background: The extent to which depression is associated with somatic complaints in children from the English-speaking Caribbean and Latin America is not well established. Objective: We sought to explore the association between depressive and somatic symptoms among children from the English-speaking Caribbean and Latin America, while accounting for age, sex, socioeconomic status, cultural background, and anxiety score. Method: 1541 elementary school children, ages 9–12 years, from the English-speaking Caribbean and Latin America completed the Adolescent Depression Rating Scale (ARDS), the Numeric 0–10 Anxiety Self-Report Scale and the Children's Somatic Symptom Inventory-24 (CSSI-24). T-tests and ANOVA's were used to compare CSSI-24 and ARDS scores among countries, and the CSSI-24 scores of children with (ARDS ≥ 4) and without likely clinically significant depression. Regression analyses assessed possible predictors of CSSI-24 score. Results: Depressive and somatic symptom scores were highest among the Jamaican children and lowest among the Colombian children (p <.001). Children with likely clinically significant depression exhibited higher mean somatic symptom scores (p <.001). Depressive symptom scores predicted somatic symptom scores (p <.001). Conclusions: Depressive symptoms were a strong predictor of reporting somatic symptoms. Knowledge of this association may facilitate better recognition of depression among youth. [ABSTRACT FROM AUTHOR]

Against the background of a lack of screening instruments for measuring depressive symptoms in Colombian adolescents and preadolescents, this study aims to establish the internal consistency reliability, component structure and the concurrent and discriminant validity of the Kutcher Adolescent Depression Six-Item Scale (KADS-6) among preadolescent school students in Sincelejo, Colombia. Participated 710 youth (10.8 years of age ±.75 years) divided into two groups to cross-validate analyses that were undertaken to determine the internal consistency reliability, as well as the concurrent and discriminant validity, of the KADS-6 among preadolescents. Results show that over 95% of the sample did not report problems understanding any of the items on the KADS-6. The KADS-6 had acceptable levels of internal consistency reliability, concurrent and discriminant validity and was unidimensional. In conclusion, The KADS-6 is well understood by Colombian preadolescents and has adequate psychometric properties in adolescents, rendering it acceptable for use with Colombian preadolescents. [ABSTRACT FROM AUTHOR]

Large-volume pseudotachylite bodies in impact structures are dike like and consist of angular and rounded wall-rock fragments enveloped by a microcrystalline and sporadically glassy matrix that crystallized from a melt. Knowledge of the formation of pseudotachylite bodies is important for understanding mechanics of complex crater formation. Most current hypotheses of pseudotachylite formation inherently assume that fragmentation and melt generation occur during a single process. Based on the structure of pseudotachylite bodies at Sudbury (Canada) and Vredefort (South Africa), we show that these processes differ in time and space. We demonstrate that the centimeter- to kilometer-scale bodies are effectively fragment- and melt-filled tension fractures that formed by differential rotation of target rock during cratering. Highly variable pseudotachylite characteristics can be accounted for by a single process, i.e., drainage of initially superheated impact melt into tension fractures of the crater floor. doi: 10.1130/G30806.1