The recently published revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) combines abuse of and dependence on substances into one single disorder with graded severity, called substance use disorder (Regier, Kuhl, & Kupfer, 2013). This change was made in response to a number of studies indicating a one-dimensional structure of abuse and dependence criteria. These findings contradict the bi-axial concept of dependence and the consequences of use found in earlier versions of the DSM (Edwards & Gross, 1976).