TY - JOUR AV - public JF - PLoS One N1 - This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. http://creativecommons.org/licenses/by/4.0/ ID - discovery10122484 Y1 - 2021/02/10/ VL - 16 A1 - Gershuny, J A1 - Sullivan, O A1 - Sevilla, A A1 - Vega-Rapun, M A1 - Foliano, F A1 - Lamote de Grignon, J A1 - Harms, T A1 - Walthery, P IS - 2 N2 - We present findings from three waves of a population-representative, UK time-use diary survey conducted both pre- and in real time during full ?lockdown?, and again following the easing of social restrictions. We used an innovative online diary instrument that has proved both reliable and quick-to-field. Combining diary information on activity, location, and co-presence to estimate infection risks associated with daily behavior, we show clear changes in risk-associated behavior between the pre, full-lockdown and post full-lockdown periods. We document a shift from more to less risky daily behavior patterns (combinations of activity/ location/co-presence categories) between the pre-pandemic pattern and full lockdown in May/June 2020, followed by a reversion (although not a complete reversal) of those patterns in August 2020 following the end of the first lockdown. Because, in general, a populations? time use changes relatively slowly, the behavioral changes revealed may be interpreted as a consequence of the UK COVID-19 lockdown social restrictions and their subsequent relaxation. TI - A new perspective from time use research on the effects of social restrictions on COVID-19 behavioral infection risk UR - https://doi.org/10.1371/journal.pone.0245551 ER -