Depressive moods and behaviors are developmentally normative, yet potentially impairing, in preschool-aged children. In addition to frequency, duration of behavior is an important parameter to consider when characterizing risk for worsening mood dysregulation. The goal of this study was to identify the duration and severity of depressive moods and behaviors and associations with impairment in a large community sample of preschool-aged children using an online parent-report daily diary.

中文翻译：

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绘制学龄前儿童抑郁情绪和行为的持续时间和严重程度

抑郁情绪和行为在学龄前儿童中是发育正常的，但可能会产生损害。除了频率之外，行为持续时间也是描述情绪失调恶化风险时需要考虑的一个重要参数。本研究的目的是通过在线家长报告每日日记，确定大量学龄前儿童社区样本中抑郁情绪和行为的持续时间和严重程度以及与障碍的关联。