Sanna studies the science of personality change and individual differences. She received her PhD in Social Psychology from the University of Cambridge, and her Master’s in Social and Developmental Psychology also from the University of Cambridge. Presently she applies her research to the public sector, working to use behavioural science on issues of poverty alleviation. As a Principal Investigator at the Centre of Social and Behaviour Change, she works closely with project teams, governments and other policymakers to diagnose, design and evaluate behaviourally informed interventions on behaviour change. Sanna has previously taught at Judge Business School, Cambridge. She is a columnist for Psychology Today and Fast Company, and her short books on personality are out in 2022.