  We study the equivalence between infinitesimal Torelli theorem for smooth
hypersurfaces in rational homogeneous varieties with Picard number one and the
theory of generalized Massey products. This equivalence shows that the
differential of the period map vanishes on an infinitesimal deformation if and
only if certain twisted differential forms are elements of the Jacobian ideal
of the hypersurface. We also prove an infinitesimal Torelli theorem result for
smooth hypersurfaces in log parallelizable varieties.
