Hart, J, Byrne-Davis, L, Epton, T, Ghio, D, Drury, J, Armitage, C, Shorter, G, Arden, M A, Chadwick, P, Kamal, A, Lewis, L, McBride, E, O'Connor, D, Swanson, V, Whittaker, E & Chater, A 2021, Optimising physical distancing to reduce the spread of Covid-19: Behavioural science and disease prevention guidance for public health. Taking a Behavioural Science approach . British Psychological Society, Leicester . < https://www.bps.org.uk/coronavirus-resources/professional/optimising-physical-distancing >