ROLE OF BEAM POLARIZATION IN THE DETERMINATION OF WW-GAMMA AND WWZ COUPLINGS FROM E(-)-]W+W-()E()

We evaluate the constraints on anomalous trilinear gauge-boson couplin gs that can be obtained from the study of electron-positron annihilati on into W pairs at a facility with either the electron beam longitudin ally polarized or both electron and positron beams transversely polari zed. The energy ranges considered in the analysis are the ones relevan t to the Next Linear Collider and to CERN LEP 200. We discuss the poss ibilities of a model-independent analysis of the general CP-conserving anomalous effective Lagrangian, as well as its restriction to some sp ecific models with reduced number of independent couplings. The combin ation of observables with initial and final state polarizations allows us to separately constrain the different couplings and to improve the corresponding numerical bounds.