The PURPLE program is designed to help parents of new babies understand a developmental stage that is not widely known. It provides education on the normal crying curve and the dangers of shaking a baby.
Additionally the program tries to create a cultural change in how parents, caregivers, and everyone in the community understand the normalcy of this early infant crying and the dangers of reacting to an infant's crying in frustration. The program is based on 30 years of scientific research on infant crying, the connection between the crying curve and the incidence of SBS. It has undergone extensive evaluation with randomized controlled trials with 4400 participants and 32 parent focus groups. Therefore, in order to achieve consistent results, the program is delivered using a very specific protocol.
The Period of PURPLE Crying is designed and approved by pediatricians, public health nurses, child development experts and parents. The program materials are:
- Educational, attractive and relevant to all parents of newborns;
- Emphasize the dangers of shaking with a clear, memorable and meaningful positive message;
- Presented at a grade 3 language level;
- Representative of multicultural and ethnic backgrounds; and
- Compliant with all safe sleep and public health safety recommendations
The program materials include either:
The PURPLE program has been translated into eleven languages (listed below) and includes closed captioning for the hearing impaired. This is done to make sure that regardless of the parent's cultural background they receive the materials in their native language.

The Period of PURPLE Crying is currently available in:
- English
- Closed Caption
- Spanish
- French
- Japanese
- Korean
- Portugese
- Cantonese
- Punjabi
- Vietnamese
- Somali
- Arabic
The PURPLE program is delivered to parents and caregivers usually by health professionals who are trained to deliver the program and answer the parents’ questions. This is done to ensure everyone receives the same information.
During the process of testing the program we held many focus groups over the course of a year with parents from various incomes and races and cultural backgrounds. We learned a lot from these parents that was incorporated into the program. It was very revealing to find out that all parents, from all cultures understood what the Period of PURPLE Crying was referring to and had experiences with high crying babies.
If you would like information about how to get the Period of PURPLE Crying in your community or birthing hospital please contact:
PURPLE Team
801-447-9360 option 1
PURPLE@dontshake.org