This study investigated differences between unresolved attachment, reports of behavior, and associated cognitive processes in a maltreatment sample. Participants were 22 adolescents with a history of maltreatment. Measures included the Adult Attachment Projective (George, West, & Pettem, 1997), the Behavioral Assessment System for Children (Reynolds & Kamphaus, 1998), and selected scales from the Woodcock-Johnson Third Edition Tests of Cognitive Ability (Woodcock, McGrew, & Mather, 2001). Results found that parent ratings on five BASC subscales were significantly different for resolved versus unresolved adolescents, and adolescent self-reports were found to differ on four BASC subscales and one BASC composite. Results also found significant differences for resolved versus unresolved adolescents on measures of cognitive processes. Implications for theory and intervention are discussed.