  The application and extension of well-known BRST cohomological methods to
supersymmetric field theories are discussed. The focus is on the emergence and
particular features of supersymmetry algebra cohomology in this context. In
particular it is discussed and demonstrated that supersymmetry algebra
cohomology emerges within the cohomological analysis of standard supersymmetric
field theories whether or not the commutator algebra of the symmetry
transformations closes off-shell.
