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Table 3 Climate change hopefulness scale: item-level change after intervention (n = 932)

From: Climate change hopefulness, anxiety, and behavioral intentions among adolescents: randomized controlled trial of a brief “selfie” video intervention

Group n

Negative 313

Control 311

Positive 308

Climate Change Hopefulness (CCH)

− 0.17

− 5.99

1.14

Personal will and way (PW)

0.72

− 3.83

3.48

12. I am willing to take actions to help solve problems caused by climate change

0.17

− 4.78

− 1.56

13. I know that there are things that I can do to help solve problems caused by climate change

− 0.95

− 3.16

0.77

14. I know what to do to help solve problems caused by climate change

2.25

0.00

7.48

Collective will and way (CW)

− 0.77

− 5.96

2.29

15. If everyone works together, we can solve problems caused by climate change

1.05

− 5.32

− 1.28

16. I believe that scientists will be able to find ways to solve problems caused by climate change

0.24

− 2.54

1.68

17. I believe people will be able to solve problems caused by climate change

− 2.85

− 5.43

− 1.19

18. I believe more people are willing to take actions to help solve problems caused by climate change

0.83

0.00

6.58

19. Even when some people give up, I know there will be others who will continue to try to solve problems caused by climate change

− 1.24

− 4.39

1.21

(R) Lack of will and way (LW)

− 0.20

− 2.59

-3.30

20. (R) Climate change is beyond my control, so I won’t bother trying to solve problems caused by climate change

− 0.38

− 0.86

− 1.54

21. (R) The actions I can take are too small to help solve problems caused by climate change

0.37

− 3.41

− 3.32

22. (R) Climate change is so complex we will not be able to solve problems that it causes

− 0.44

− 1.82

− 2.62

Hopefulness (slider)

1.17

2.00

11.42

  1. Paired t values compare differences between baseline and endpoint scores
  2. Values in bold are significant at p < 0.001
  3. Higher scores indicate more hopefulness, except for items indicated as reversed (R)