Emotional availability (EA) is a prominent index of socioemotional adaptation in the parent-child dyad. Can basic psychometric properties of EA be looked at from both variable (scale) and person (cluster) points of view in individuals and in dyads? Is EA stable and continuous over a short period of time? This methodological study shows significant short-term stability and continuity in EA as measured with individual and dyadic Emotional Availability Scales and in clusters of individuals and dyads on EA scores in 52 mothers and their 5-month-olds observed twice at home. This work documents psychometric properties of the emotional availability construct from both variable and person orientations.