 She concluded that these people were ready to seek out positive events – an optimistic streak, whilst people with the "short" variant of the 5-HTTLPR gene are more prone to negative experiences and anxiety.Her work was confirmed by Jan-Emmanuel De Neve, who identified that having two copies of the "long" variant of the 5-HTTLPR gene correlates with happiness in teenagers.In October 2019 Fox was appointed the United Kingdom Research and Innovation (UKRI) Mental Health Networks Impact and Engagement Coordinator.