ABSTRACT
Several lengthy published examples of ACT-based case conceptualization are available, including a book-length treatment by Bach and Moran (2008), and chapters by Luoma et al. (2007) and Wilson and DuFrene (2009). Case conceptualization in ACT differs from more conventional methods where determination of the presence or absence of ICD-10 or DSM-IV diagnostic symptoms is the primary goal. While identi®cation of diagnostic symptoms (which essentially equate to problematic thoughts, emotions, and other behaviours) is important, behavioural approaches to psychotherapy view the identi®cation of these problematic behaviours as merely the ®rst step. From a behavioural (and an ACT-based) perspective, it is also necessary to determine what functions problematic behaviours serve in order to effectively change them.
