Attachment styles have been shown to be enduring and influential, and studies of attachment phenomena require scores that are reliable and valid. The present study investigated the psychometric integrity of scores on the Adult Attachment Scale using data from 283 college students. This instrument is an 18-item Likert scale that is an expansion of the measure developed by C. Hazan and P. R. Shaver (1987, 1990). Results strongly supported the reliability and validity of scores from the measure. These results compared extremely favorably with those from previous studies, and certainly were more favorable than those for the Hazan and Shaver measure. (Contains 2 tables and 19 references.) (Author/SLD)