From the 1980s onwards a constructivist viewpoint has developed within
the sociology of social movements. This new position is characterized
by a multitude of different and partly contradictory meanings. Furthe
r discussion of some of the key issues within this perspective is need
ed in order to understand more precisely how social movements and move
ment organizations are constructed. Two basic elements of constructivi
st analysis are proposed: the capacity of movement organizations to co
nstruct a powerful identity and effective strategies, and the given op
portunities in society to defend or advance the ideology of the moveme
nt organizations. The conclusion is that such a conceptual framework c
ould further our understanding of the internal and external factors wh
ich produce what we know as movement organizations. (C) Scandinavian S
ociological Association 1996