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This longitudinal study investigated the associations among children’s externalizing problems, task-avoidant behavior, and academic performance in early school years. The participants were 586 children (43% girls, 57% boys). Data pertaining to externalizing problems (teacher ratings) and task-avoidant behaviors (mother and teacher ratings) were gathered, and the children were tested yearly on their academic performance in Grades 1–4. The results were similar for both genders. The analyses supported a mediation model: high externalizing problems in Grades 1 and 2 were linked with low academic performance in Grades 3 and 4 through increases in task-avoidant behavior in Grades 2 and 3. The results also provided evidence for a reversed mediator model: low academic performance in Grades 1 and 2 was associated with high externalizing problems in Grades 3 and 4 via high task avoidance in Grades 2 and 3. These findings emphasize the need to examine externalizing problems, task-avoidant behavior, and academic performance conjointly to understand their developmental dynamics in early school years.
