Decision making tasks such as the Iowa Gambling Task and Rogers' Decision Making Task have been used to consistently identify decision making problems in addict samples. The role of the Ventromedial Prefrontal Cortex (VmPFC) and Orbital Frontal Cortex (OFC) have been linked to impaired decision making through fMRI studies and comparison studies with patients who have suffered bilateral damage to the VmPFC. These regions have been associated to traits, in addicts, such as dysfunctional inhibitory control, hypersensitivity to reward, difficulties in reverse learning (or strategy shifting) and insensitivity to future consequences. Research suggests that the reported poor performance of addicts is a possible artefact of decision making tasks which encourage poor decisions initially, paired with an impaired ability to switch task strategies as experience and knowledge is gained.