  We present final measurements of the Z boson-lepton coupling asymmetry
parameters Ae, Amu, and Atau with the complete sample of polarized Z bosons
collected by the SLD detector at the SLAC Linear Collider. From the left-right
production and decay polar angle asymmetries in leptonic Z decays we measure Ae
= 0.1544 +- 0.0060, Amu = 0.142 +- 0.015, and Atau = 0.136 +- 0.015. Combined
with our left-right asymmetry measured from hadronic decays, we find Ae =
0.1516 +- 0.0021. Assuming lepton universality, we obtain a combined effective
weak mixing angle of sin**2 theta^{eff}_W = 0.23098 +- 0.00026.
