This study examines whether patients self-reported attachment representations and levels of depression and anxiety influenced psychologists' evaluations of morbidly obese patients applying for bariatric surgery. A sample of 250 patients (mean age 44, 84 % female) who were referred for bariatric surgery completed questionnaires to measure adult attachment and levels of depression and anxiety. Psychologists rated patients' suitability for bariatric surgery using the Cleveland Clinic Behavioural Rating System (CCBRS), unaware of the results of the completed questionnaires. Attachment anxiety (OR = 2.50, p = .01) and attachment avoidance (OR = 3.13, p = .001) were found to be associated with less positive evaluations on the CCBRS by the psychologists, and symptoms of depression and anxiety mediated this association. This study strongly supports the notion that patients' attachment representations influence a psychologist's evaluation in an indirect way by influencing the symptoms of depression and anxiety patients report during an assessment interview. The clinical implications of these findings are discussed.