A comparative framework of inter-individual coordination and pair-bonding

Inter-individual coordination (IIC) at the behavioral and physiological level, its association with courtship pair-bond maintenance, have been receiving increased attention in scientific literature recent years. However, there is no integrative framework combining plethora of findings humans nonhuman species yet that addresses evolutionary origins IIC. Here, we take a comparative approach review on link between IIC formation, bi-parental care. Our suggests across socially monogamous species, – level correlated likelihood forming retaining pair-bond, reproductive success. We expand pair-bonding hypothesis by stating higher levels might be beneficial for relationship quality care and, as result, also become preferred trait formation maintenance pair-bond. further discuss key questions to disentangle evolution based this hypothesis.