In this paper it is argued that the problem of formulating a comprehen
sive theory of successful ageing - and thereby of finding good criteri
a for success - may be attributed to the lack of a suitable multidisci
plinary framework that meets at least three basic theoretical requirem
ents. These requirements are explicated, and some existing theories an
d approaches of successful ageing are discussed in the light of these
requirements. An alternative theoretical framework is presented which
can accommodate a number of existing insights, and which is used as th
e basis of a new theory of successful ageing, including theory-guided
criteria for success.