We report measurements of the linear and circular polarization ratios as a function of rotational state for the asymmetric rotor NH2. This molecule displays fine structure splitting from its unpaired electron and hyperfine structure from coupling with the nuclear spins. We present a theory of polarized emission for this molecule which includes the effects of fine and hyperfine interactions. These have a marked effect on the polarization ratios and are well described by a theory in which the effect of electron and nuclear spin are introduced as time-independent perturbation coefficients. We find that theory predicts different values of polarization ratio according to the manner of coupling of the proton nuclear spins. The best fits to experimental data are obtained when the coupling follows a physically intuitive scheme rather than that usually. adopted. When all intramolecular couplings due to electron and nuclear spins are properly accounted for; there is no depolarization that may be attributed to the effect of elastic collisions. Thus, as in the case of diatomic molecules, orientation and alignment show a marked stability to change by collision.