More research on the efficacy of BA is still needed, especially with regard to its effect after follow-up; however the results reported so far are promising. Furthermore, BA is much easier to apply and disseminate than other psychological treatments. For these reasons, there is now an increasing interest in examining the efficacy of this intervention in populations with different comorbidities such as obesity, cancer, anxiety, borderline personality, substance abuse, childhood abuse history, smoking, and post-traumatic stress disorder, among others (Dimidjian et al., 2011).