  The 3D Yukawa model with U(1) chiral symmetry is investigated in a broad
interval of parameters using the Binder method. Critical exponents of the
Wilson-Fisher (magnetic) and Gross-Neveu (chiral) universality classes are
measured. The model is dominated by the chiral universality class. However at
weak coupling we observe a crossover between both classes, manifested by
difficulties with the Binder method which otherwise works well.
