All early interventions are based on assumptions about how young children d
evelop and learn. Assumptions about the parent-child relationship are centr
al to the philosophies and missions of many early intervention programs. Sp
ecific characteristics of parent-child interaction may become part of the a
ssessment process and also incorporated into intervention approaches. Howev
er, the developmental literature on which these characteristics are based i
s derived from a culturally restricted sample. Drawing From interviews with
six mothers, this article explores the range and coalescence of ideas that
mothers from two different cultural backgrounds (white American and Korean
) have about interactions with their 12-month-old babies in two situations
important in early intervention: social interactive play and joint play wit
h objects. Mothers' ideas about interaction in these situations were highly
consistent with ideas on early development and parenting found in other cr
oss-cultural studies.