Starting to be implemented as of the 1960s, early intervention programs are frequently employed at the present time. Researchers develop and implement early intervention programs in various subjects and areas. These programs may be family-based, school-based, community-based, or a combination of them. This study aimed at comparing the early intervention programs developed in the USA and in Turkey in the last decade in terms of duration, implementers, participants, implementation process, assessment tools, and effects. (C) 2015 The Authors. Published by Elsevier Ltd.