From The Washington Post:
“Are infants too young to experience and remember painful emotions or traumatic events? A growing body of research suggests no, and researchers believe that if left untreated, trauma experienced in infancy can sometimes result in lifelong health consequences.
“Beyond such obvious triggers as war and terrorism, exposure to domestic violence, natural disasters such as a house fire, physical abuse and community violence are examples of experienced events that can be traumatic for infants, experts say.
“Experts in infant mental health, which goes from the prenatal period up to age 3, say that babies and very young children who experience such things have higher incidences of anxiety disorders or depression that can persist into adulthood…”