The Arnowitt-Friedman-Nath model of PCAC (partially conserved axial-vector current) breakdown which permits the two-body photon decays of ${\pi }^0$, $\eta$, and vector mesons is extended to the ${\eta }^{\prime }$ meson and to higher order. The model is required to satisfy a set of conditions, the most important of which is that it be consistent with $\mathrm{SU}\left(3\right)\mathrm{}\times \mathrm{SU}\left(3\right)\mathrm{}$ hard-meson current algebra. It is shown that if PCAC is no longer pole-dominated, then the general $\sigma$ commutator, [$A_a^0,{\partial }_{\mu }{A}_b^{\mu }$], cannot be pole-dominated either. In addition, the variation of the Lagrangian under chiral transformations will no longer be proportional to the divergence of the current. The model is used to calculate decay widths for the processes ${\eta }^{\prime }\to {\rho }^0+\gamma$, ${\eta }^{\prime }\to 2\gamma$, $\omega \to 3\pi$, $\varphi \to 3\pi$, and $\eta \to 2\pi +\gamma$ with good success.

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