Establish whether rebound signatures generalize across large exogenous mobility shocks

Establish how much of the post-restriction rebound signature observed during the COVID-19 pandemic is specific to that event versus a general feature of large exogenous shocks to routine mobility.

Background

The paper reports that mobility recovery after restrictions was heterogeneous and asymmetric: later-period mobility did not uniformly return to the pre-restriction baseline, and the rebound was particularly concentrated in shorter-range, habitual movement. The authors describe this as a rebound signature associated with the first pandemic wave.

Because the COVID-19 disruption was unusually large, geographically widespread, sudden, and synchronized, the study cannot determine whether this recovery pattern reflects features unique to the COVID-19 event or instead represents a broader response of routine mobility to major external shocks. Comparative evidence from other large-scale disruptions would be needed to resolve this question.

References

More broadly, the first pandemic wave constituted an unusually large and geographically widespread disruption to routine mobility, sudden, large-scale, and geographically synchronised in ways that differ from ordinary mobility perturbations, and it remains an open question how much of what we report here (the rebound signature in particular) is specific to this event versus a general feature of large exogenous shocks to routine mobility.

— Statistical Laws of Human Mobility under Large-Scale Behavioural Shock  (2610.22116 - Amaduzzi et al., 15 Oct 2026) in Section “Discussion,” paragraph beginning “Our research has several limitations”