Research suggests that attachment patterns can be measured as early as
12 months of age and that in the absence of major environmental chang
e, they persist into adulthood Evolving from three traditions, a numbe
r of assessment tools have been developed to study adult attachment. T
hey range from semiclinical interviews to brief questionnaires and exp
lore different relationship domains, from retrospective accounts of ch
ildhood experience to current romantic relationships. After exploring
the theoretical background of the study of adult attachment, the autho
rs review the format and the psychometric properties of several measur
es. Studies that compare measures are described. The article concludes
with a discussion of unresolved questions about adult attachment that
emerge from various measurement perspectives.