On the 9th March 2016, Desiree Spronk successfully defended her thesis titled: ‘Individual differences in the acute effects of cannabis and cocaine on cognitive control’. In her PhD, Desiree investigated how acute administration of cannabis and cocaine affect a number of cognitive control functions in regular users. The defense was held in the Aula of the Radboud University Nijmegen, The Netherlands. The ceremony was attended by family, friends and colleagues. The OCEAN lab would like to congratulate Desiree!