Sleep's Dark Side: How Rest Amplifies Negative Memories in Anxious Children
Groundbreaking research reveals that sleep—typically considered restorative and healing—may actually strengthen negative memory biases in anxious children, potentially explaining why some young people develop persistent worry patterns that spread across multiple life situations. A controlled study of 34 participants aged 9-14 found that children with higher clinician-rated anxiety showed increased tendency to falsely recognize new-but-similar negative images as previously seen, but only after sleeping between learning and testing sessions. This discovery suggests that sleep-dependent memory consolidation processes may selectively strengthen threatening associations in anxious youth, creating a neurological pathway through which single negative experiences expand into generalized fears.