Other longitudinal data has shown that subjective well-being set points do change over time, and that adaptation is not necessarily inevitable. In his archival data analysis, Lucas found evidence that it is possible for someone's subjective well-being set point to change drastically, such as in the case of individuals who acquire a severe, long term disability. However, as Diener, Lucas, and Scollon point out, the amount of fluctuation a person experiences around their set point is largely dependent on the individual's ability to adapt.