We examined inattention/overactivity (I/O) over time and in relation to caregiving in three matched groups: (1) Romanian Orphans (RO) with a minimum of eight months' deprivation prior to adoption, (2) Early Adopted (EA) children adopted from Romania prior to age four months, and (3) Canadian Born (CB) non-adopted children. Comparisons among groups at 4.5, 10.5, and 17 years of age revealed significantly greater I/O in the Romanian Orphan than Canadian Born group at all ages, and greater than the Early Adopted group at ages 4.5 and 10.5. Canadian Born and Early Adopted groups did not differ. Rates of borderline clinical I/O among Romanian Orphans were significantly higher than rates found in the general population; Canadian Born and Early Adopted groups did not differ from the general population. Among Romanian Orphans, I/O was positively related to duration of deprivation; this association did not attenuate over time. Regressions indicated that I/O at age 10.5 was negatively related to warmth and stimulation in the adoptive home and attachment, after accounting for duration of deprivation and age 4.5 I/O. Authoritarian parenting was positively predictive of I/O in children with minimal deprivation and negatively predictive in children with extensive deprivation. Attachment was negatively predictive of I/O in children with less than 19 months' deprivation but unrelated to I/O in those with more than 19 months' deprivation. (Contains 4 tables.)