Infant‐mother boundaries were operationalized in terms of body‐to‐body contact and use of interpersonal space. The unit of observation was the infant‐mother dyad. Infants between the ages of 12 and 24 months and their mothers were observed in three situations: self‐ and mother‐recognition tasks, and the free‐play and second reunion episodes of the Strange Situation. Infant‐mother touch and the pattern of proximity‐distality were principally determined by context of interaction; and, in the more stressful and more structured situations, the connection‐separation balance favored connection, whereas in the free‐play situation the balance favored separation. Infant‐mother touch and use of interpersonal space were not found to be isomorphic to attachment; in addition, attachment interacted with age and gender of the infant to describe level of connection‐separation. Results are discussed in the context of working models of the relationship and formation of boundaries.