The NCSBS was given a challenge by their International Scientific Advisory Board to empirically test a shaken baby syndrome (SBS) prevention program that is effective and can be used in any jurisdiction or setting.  From 2003 – 2007, parallel studies were conducted on the Period of PURPLE Crying program through randomized controlled trials (RCT) in Seattle, Washington and Vancouver, B.C., Canada. Delivery sites included pediatric practices, maternity departments, pre-natal classes, and nurse home visitor programs. Over 4,400 parents participated in the studies. Additionally, 25 parent focus groups were conducted to develop the new materials. The research has since been published in two prestigious, peer-reviewed journals: Pediatrics and the Canadian Medical Association Journal. The RCTs demonstrated that attractive, positive educational materials about crying and shaking are read and watched voluntarily outside of the presence of a health care professional in a high proportion of recipients, can significantly alter knowledge and change behavior that is considered key to preventing shaking.  READ MORE HERE