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measures of depression, anxiety, anger, disruptive behavior, and negative self-perception. A total of 181 children aged between 9 and 12 years were enrolled at various stages of the construction of a new short questionnaire; Stress in Children (SiC). Baseline data, completed questionnaires, salivary cortisol (SC) five times during (1 day), and 24-h urinary catecholamines were collected during an ordinary school week. The SiCwas validated using the Beck Youth Inventories of Emotional and Social Impairment (BYI). Associations with self-reported psychosomatic symptoms for urinary catecholamines and cortisol concentrations were assessed. Cronbach’s á used in this study for the entire SiC questionnaire is 0.86. Statistically significant associations were found between the SiC Global Mean Score (GMS) and all of the five BYI …