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Using \chiQM with configuration mixing, the contribution of the gluonpolarization to the flavor singlet component of the total spin has beencalculated phenomenologically through the relation\Delta\Sigma(Q^2)=\Delta\Sigma-\frac{3\alpha_s(Q^2)}{2\pi}\Delta g(Q^2) asdefined in the Adler-Bardeen scheme, where \Delta\Sigma on the right hand sideis Q^2 independent. For evaluation the contribution of gluon polarization\Delta g'(=\frac{3\alpha_s(Q^2)}{2\pi}\Delta g(Q^2)), \Delta\Sigma is found inthe \chiQM by fixing the latest E866 data pertaining to \bar u-\bar d asymmetryand the spin polarization functions whereas \Delta \Sigma(Q^2) is taken to be0.30\pm0.06 and \alpha_s= 0.287\pm0.020, both at Q^2=5{\rm GeV}^2. Thecontribution of gluon polarization \Delta g' comes out to be 0.33 which leadsto an almost perfect fit for spin distribution functions in the \chiQM. Whenits implications for magnetic moments are investigated, we find perfect fit formany of the magnetic moments. If an attempt is made to explain the angularmomentum sum rule for proton by using the above value of \Delta g', one findsthe contribution of gluon angular momentum to be as important as that of the q\bar q pairs.Comment: 15 pages, LaTeX, version to appear in Int. Jol. of Mod. Phys.

CHIRAL QUARK MODEL (χQM) AND THE NUCLEON SPIN