  A phenomenological model which has had some success in explaining
polarization phenomena and left-right asymmetry in inclusive proton-proton
scattering is considered for reactions involving photons. In particular, the
reactions (a) $ \gamma + p \to H + X;$ (b) $\gamma + p (\uparrow) \to \pi^{\pm}
+ X $ and (c) $p(\uparrow) + p \to \gamma + X$ are considered where $\gamma =$
resolved photon and hyperon $ H = \Lambda^0, \Sigma^{\pm}$ etc. Predictions for
hyperon polarization in (a) and the asymmetry (in (b) and (c)) provide further
tests of this particular model. Feasibility of observing (b) at HERA and the
effect of the polarization of the sea in the proton in $p (\uparrow) + p \to
\pi^{\pm} + X$ is briefly discussed.
