Dr Marian Shanahan was awarded her PhD at UNSW in 2011 and is currently a Senior Research Fellow at the National Drug and Alcohol Centre. Her PhD work assessed the costs and benefits of cannabis policies in the NSW context in which the policy options assessed included a hypothetical legalisation approach. Additionally she examined the preferences for various cannabis policies in a community sample. Past research activities have focused on the application of economic evaluation tools to address policy questions related to illicit drug and alcohol dependence and women’s health. Currently, research includes being a Chief Investigator on an NHMRC funded grant assessing the costs and benefits of treatment for heroin use.