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After teaching cognitive and social-problem-solving techniques designed to prevent depressive symptoms, we followed 69 fifth- and sixth-grade children at risk for depression for 2 years We compared these children with 49 children in a matched no-treatment control group The prevention group reported fewer depressive symptoms through the 2-year followup, and moderate to severe symptoms were reduced by half Surprisingly, the effects of the prevention program grew larger after the program was over We suggest that psychological immunization against depression can occur by teaching cognitive and social skills to children as they enter puberty
Gillham et al. (Wed,) studied this question.