Personal initiative, a concept akin to entrepreneurship and organizati
onal spontaneity, was compared in East and West Germany, Differences w
ere hypothesized to be the results of occupational socialization, part
icularly of work control and complexity, rather than of a selection ef
fect. A representative longitudinal study was conducted in the East an
d a cross-sectional study in the West. Lower initiative at work was fo
und in the East; control and complexity affected changes in initiative
, The results speak for socialization and against selection.