Generalized reciprocity implies a correlation between perceiver and target effects.
Dyadic reciprocity implies a correlation between relationship effects.
Dyadic reciprocity is closer to what we usually mean by the term reciprocity. A smiles at B, and then B smiles at A. Reciprocity here does not have that meaning. Perceiver assumed reciprocity implies a correlation between how a person sees others in general and how the person thinks that others see him or her in general. Generalized assumed reciprocity implies a correlation between target effects in perceptions and meta-perceptions. Dyadic assumed reciprocity implies a correlation between relationship effects.