“…Epidemiological studies suggest between 10 and 25% of infants aged 6-24 months are chronic night wakers, and 15-20% take excessive time to settle to sleep (Armstrong, Quinn, & Dadds, 1994;Ferguson, Shannon & Horwood, 1981;Scott & Richards, 1990). ISD is a major stress for parents (Ferguson et al, 1981;Mindell, Moline, Zendell, Brown, & Fry, 1994) and if chronic, or associated with adverse family circumstances, may be harmful to family wellbeing (Stoleru, Nottelman, Belmont, & Ronsaville, 1997) and child development (Dahl, 1996).…”