Sarah McCue Horwitz, Ph.D., a professor in the Department of Pediatrics and the Centers for Health Policy and Primary Care and Outcomes Research at Stanford University, and colleagues made that pronouncement after evaluating data from the second National Survey of Child and Adolescent Well-Being (NSCAW II), a longitudinal study of 5,872 children from infancy to age 17.5 referred to child-welfare agencies for an investigation of potential maltreatment. The investigations were completed during the sampling period, February 2008 to April 2009. They reported their results in the June Journal of the American Academy of Child and Adolescent Psychiatry.