Valentina Lozano Nasi

47 individual transilience in the face of climate change in Study 3. We used the exact same procedure as in Study 3 to calculate a separate intentions and behaviours score. Support for Local Adaptation Policies. We added three transformative policies (e.g., ‘Change working hour schedules around hot weather during spring/summer (for example, working early morning and late afternoon/evening and rest during the day’). A factor analysis with principal axis extraction and oblimin rotation showed that the transformative policies items did not load on a separate factor, thus we incorporated the transformative policies in the scale used in Study 3. Collective Climate Change Adaptation Behaviours. We kept the three items that better reflected working for and with others to protect the community from the risks of climate change (e.g., ‘Joining a community initiative to make my neighbourhood greener to better protect against climate change risks, for example by planting trees, building green roofs or parks’; see Appendix B). Climate Change Risk Perception. We kept the three items that assessed the risks that climate change poses to entities that are most relevant for participants (e.g., themselves and their household; see Appendix B). Self-Efficacy and Outcome Efficacy for Climate Change Adaptation. We included the additional item ‘I trust that I can take actions aimed to reduce the negative impacts of climate change on myself and close others’ to measure self-efficacy. We added the item ‘My own behaviour can help reducing the negative impacts of climate change on myself and close others’ to measure outcome efficacy. Climate Change Positive Affect. We included the additional option ‘confident’ to assess to what extent people experience positive affect in the face of climate change.16 Political Collective Action. We included the additional item ‘Blocking roads while demonstrating in favour of accelerating climate change adaptation’ (adapted from Van Zomeren et al., 2019). Positive Change Derived from Climate Change. We asked participants to what degree they experienced three positive changes because of being confronted with climate change risks in the last few years (e.g., ‘I am able to do better things with my life’, see Appendix B). We adapted the scale from the Posttraumatic Growth Short Inventory (Cann et al., 2010), and we aimed to cover three dimensions that are most in line with the components of transilience: personal strength, new possibilities, 16 ‘Distressed’ and ‘concerned’ were included as negative valence fillers. 2

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