And you all -- I see the sadness and the worry creasing his face.

WHITEHOUSE: Remarks by the First Lady at DNC event in Washington, DC

The researchers assessed children at the age of three-and-a-half for signs of emotion problems, such as worry and sadness, and behavioural problems, such as hyperactivity.

BBC: NEWS | Health | Father's blues can blight babies

Or the Gallup study released in May that found stay-at-home moms were more likely to experience stress, worry, anger, and sadness than those who worked paying jobs.

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