The headpiece also provides extra head protection in case anything bumps against the cradleboard. The baby was placed in a [[cradleboard]], and the mother went back to work. Bound and wrapped on a cradleboard, a baby can feel safe and secure. At this time, the infant may use a second, larger cradleboard that replaces the first. During cold weather, the baby was wrapped in blankets, and then placed in the cradleboard. It has been shown that cradleboard use has no significant negative effect on this development. Cradleboard use has been associated with increased incidence of developmental dysplasia of the hip. Cradleboard use and its effect on mother-infant interaction has been studied in Navajo communities.