The relationship imperative: Arguments for a broad definition of attachment

S. Goldberg, J. E. Grusec, and J. M. Jenkins (1999) argued that an evolutio nary model restricted to the protective function of parent-infant relations hips provides a distinctive focus for attachment theory. An alternative mod el that assumes that the evolutionary advantage of the attachment system is based on the imperative that parents and infants develop a stable relation ship may be more consistent with modem, evolutionary theory as well sis cur rent advances in attachment research.