Dr. Hallett’s research interests include the ecology of invasive alien insect species, the chemical ecology of insect-host plant interactions, impacts of climate change on agricultural pests, and the development of integrated pest management programs for insect pests of vegetable and field crops. A major goal of her research is the development of pest management programs that help to reduce pesticide risk. She has conducted research on the ecology and management of the swede midge for the past 12 years.