El-Sheikh, M. ., Erath, S. ., & Keller, P. . (2007). Children’s sleep and adjustment: the moderating role of vagal regulation. Journal of Sleep Research, 16(4), 396-405. https://doi.org/10.1111/j.1365-2869.2007.00618.x

El-Sheikh, M. ., Keller, P. ., & Erath, S. . (2007). Marital conflict and risk for child maladjustment over time: skin conductance level reactivity as a vulnerability factor. Journal of Abnormal Child Psychology, 35(5), 715-27. https://doi.org/10.1007/s10802-007-9127-2

Keller, P. ., Kouros, C. ., Erath, S. ., Dahl, R. ., & El-Sheikh, M. . Longitudinal relations between maternal depressive symptoms and child sleep problems: the role of parasympathetic nervous system reactivity. Journal of Child Psychology and Psychiatry, and Allied Disciplines, 55(2), 172-9. https://doi.org/10.1111/jcpp.12151 (Original work published 2014)