1. To understand how diurnal cortisol rhythm early in life is associated with cognitive functioning in in normally developing toddlers.
2. To understand that infants with a cortisol secretion pattern indicative of less stress and more reactivity have higher cognitive scores as toddlers.
Saridjan, N. S., Henrichs, J., Schenk, J. J., Jaddoe, V. W., Hofman, A., Kirschbaum, C., … & Tiemeier, H. (2014). Diurnal cortisol rhythm and cognitive functioning in toddlers: The Generation R Study. Child Neuropsychology, 20(2), 210-229.