Ego development has been Found to stabilize by early adulthood among the ma
jority of the population at a stage which is well below the maximum potenti
al. The modal stags of stabilization is one which involves rudimentary self
-awareness and incipient conceptual complexity. The reasons for this early
stabilization below the maximum potential art: not fully understood. In thi
s article, a conceptual framework is formulated to explain the processes in
volved in ego-stage transition in adulthood. The formulation is based on Lo
evinger's theoretical reflections on adult ego-stage transition and the ass
ociated research, the intervention programs designed to promote adult ego d
evelopment, the theory and research in relation to moral-stage development
in adulthood, and the theory and research in relation to general personalit
y change in adulthood. In the resulting framework;, it is proposed that ego
-stage transition in adulthood represents an accommodative response to spec
ific types of life experiences and that the degree of exposure to such life
experiences, as well as the perception of and response to the life experie
nce, is influenced by specific psychological characteristics. Specific rese
arch hypotheses follow from the proposed framework, and these are outlined
with suggestions for empirical tests. (C) 2000 Academic Press.