Dr Olga Perski is a Research Associate in UCL’s Tobacco and Alcohol Research Group. She completed her PhD at UCL in 2018 under the supervision of Prof. Susan Michie, Prof. Ann Blandford and Prof. Robert West. Her doctoral research focused on the definition, measurement and promotion of engagement with digital interventions. Her current research is interdisciplinary in scope, drawing on theories and methods from behavioural science, computer science and human-computer interaction to develop, evaluate and implement digital interventions for smoking cessation and alcohol reduction. Her work is also focused on the understanding of population-wide influences on smoking, smoking cessation, alcohol consumption and alcohol reduction, using data from household surveys such as the Smoking and Alcohol Toolkit Studies.