We report two studies investigating the psychometric properties and co
nstruct validity of the Quality of Relationships Inventory (QR[), a se
lf-report measure of support, conflict, and depth in specific family a
nd peer relationships. Study 1 showed that the QRI scales possess high
internal consistency, are stable across a period of 1 year, show mode
rate agreement between participants' perceptions of the same relations
hip, and predict depressive symptoms beyond the contribution made by m
easures of general perceived support. In Study 2, adult children's and
their mothers' QRI scales assessing the quality of their relationship
with one another, but not with other family members or friends, predi
cted observers' global judgements of their behavior as they discussed
a current source of conflict in their relationship. These studies sugg
est the reliability and construct validity of the QRI scales as measur
es of the quality of specific relationships. The implications of these
results for the conceptualization and assessment of personal relation
ships are discussed.