= 62 dyads) at elevated risk for anxiety problems, we tested whether mother-infant synchrony differentially predicted infant outcomes as a function of maternal symptoms. Synchrony indexed at infant age 1 using electroencephalography recordings interacted with mothers' self-reported worry-based anxiety symptoms to predict positivity, such that at high maternal anxiety, greater synchrony was associated with less infant positivity, but synchrony was unrelated to infant positivity when maternal anxiety symptoms were low. Results are consistent with previous notions that there are ideal levels of synchrony between mothers than infants, and that maternal anxiety, in particular, may diminish the putative benefits of synchrony for infants' socioemotional development. This work lays the foundation for greater nuance in subsequent investigations of synchrony in infant development. (PsycInfo Database Record (c) 2026 APA, all rights reserved).
Mallin et al. (Mon,) studied this question.