Despite the limited evidence base, both 1-2-3 Magic programs
are used widely. In the US, 2300 professionals and over 200,000
caregivers have been trained in the 1-2-3 Magic Effective Discipline
for Children 2-12 parenting program; 1.5 million 1-2-3 Magic
books have been sold; and 280,000 1-2-3 Magic VHS/DVD copies
have been sold to date (T.W. Phelan & N. Roe, personal communication,
May 1-7, 2013).