Adaptive inferential feedback (AIF) partner training is a cognitive technique that teaches the friends and family members of depressed patients to respond to the patients' dysfunctional thoughts in a targeted manner. These dysfunctional attributions, which AIF addresses, are a common residual feature of depression amongst remitted patients, and are associated with poor long-term consequences. Thus, an AIF partner training intervention, as a supplement to individual cognitive-behavioral therapy (CBT), may help to improve clinical outcomes through the continuing reinforcement of the cognitive restructuring that takes place in the context of the patient's individual treatment. This 10-patient pilot study examines the feasibility and outcome of the augmentation of standard CBT with 4 sessions of AIF partner training. The patients' depression, anxiety, negative inferences, and perception of social support, and their partners' knowledge and provision of AIF significantly improved over the course of the study, with gains maintained at 2-month follow-up. Further research is needed to investigate any incremental value of this intervention beyond standard CBT. A detailed case example, illustrating the application of AIF partner training techniques, is included. (Contains 1 figure and 3 tables.)