Conjunctivochalasis (CCh) Overview. Conjunctivochalasis (CCh) represents one of the most common age-related eye diseases and is characterized by the presence of redundant folds of the conjunctiva that typically are detected between the eyeball and the eyelids.
Reciprocity of liking (also known as reciprocity of attraction and reciprocal liking) describes the tendency for individuals to think positively of others who express positive regard for them.
Norm of reciprocity, social norm of in-kind responses to the behavior of others. Reciprocity (cultural anthropology), way of defining people's informal exchange of goods and labour. Reciprocity (evolution), mechanisms for the evolution of cooperation.