101 collective transilience in the face of climate change After consenting, participants indicated to what extent they agreed with the statement: ‘I believe climate change is real’ (Van Valkengoed, Perlaviciute & Steg, 2021), as we assume that people who deny climate change cannot provide meaningful answers concerning the capacity to adapt to climate change. None of the participants denied the reality of climate change, and people generally perceived climate change as a serious risk to their community (M = 5.69, SD = 1.33; see Appendix B). Participants then completed questions about collective transilience, climate change risks, and climate change adaptation. Measures Measures were assessed on a Likert-scale, from 1 = strongly disagree to 7 = strongly agree, unless otherwise specified. Measures for individual and community-based adaptation behaviours, including adaptation policy support, were developed based on literature (van Valkengoed & Steg, 2019b; Reser & Swim, 2011) and in consultation with experts on climate change adaptation. Descriptive statistics and reliability coefficients are provided in Table 4.1 (full list of items in Appendix B). Collective Climate Change Transilience. We asked participants to what extent they perceive they can persist, adapt flexibly, and positively transform as a community, bearing in mind the negative consequences that climate change can have for their community. We adapted the individual transilience scale (Lozano Nasi et al., 2023a), by replacing the pronouns “I” and “me” with “we” and “us”, respectively. As a result, collective transilience captures the interdependent perspective of community members on the adaptive capacity of their community (cf. Bandura, 1998; 2000). Community-based Adaptation Intentions and Behaviours. We asked participants to what extent they intend to engage in six adaptation behaviours together with their community within the next year (e.g. ‘Motivating people in our neighbourhood to maintain their houses well to avoid damage from natural hazards caused by climate change’). Participants rated the items on a scale from 1 = not at all to 7 = very much. We also included the option 8 = I already did it, which we used to compose a measure of community adaptation behaviour. We calculated the behaviour score by counting, for each participant, the number of behaviours for which ‘8’ was selected. We calculated scores on the intentions scale by averaging the scores on the intention items for those behaviours that were not already implemented (after converting ‘8’ to ‘missing’). Support for Local Adaptation Policies. We asked participants to what extent they would support the introduction of five climate change adaptation policies in their municipality (e.g., ‘Investing public money to make vital infrastructure (for example, 4
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