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Mother-child coregulation of parasympathetic processes differs by maltreatment severity and subtype

Non-maltreating dyads display positive concordance of respiratory sinus arrhythmia (RSA), whereas dyads with maltreating mothers do not. Closer examination of the maltreating group reveals differences in concordance by subtype: physically abusive dyads display positive concordance of RSA, and neglecting dyads display no concordance. For dyads of both subtypes, severity of maltreatment predicts discordant RSA (one partner’s RSA predicts decreases in the other’s; Lunkenheimer, Busuito, Brown, & Skowron, 2018).