Some have suggested that, after 'Pre-adulthood... in the first 20 years or so... the second era, Early Adulthood, lasts from about age 17 to 45... the adult era of greatest energy and abundance and of greatest contradiction and stress.'[1] Within that framework, 'the Early Adult Transition (17–22) is a developmental bridge between pre-adulthood and early adulthood',[2] recognizing that 'the transition into adulthood is not a clear-cut dividing line'.[5] One might alternatively speak of 'a Provisional Adulthood (18–30)... [&] the initiation to First Adulthood'[6][7] as following that.