Responsibility (accountability) is neither a unitary nor well-defined
concept in social psychology. It is argued that this is so for two int
errelated reasons: (1) The two major approaches, viz., attribution of
responsibility and prosocial behavior, are treated separately, (2) the
social constitution of responsibility has been theoretically neglecte
d. On the basis of this critique, the social structure of responsibili
ty is explicated as both being responsible for somebody or something a
nd being accountable to someone. The social structure and context of r
esponsibility/accountability is exemplified by means of ordinary langu
age usage and by recourse to sociological conceptions. The sociality o
f responsibility is revealed if social psychologists let themselves be
guided by the structure of the question: Who is responsible to whom f
or what?