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. 2022 Winter;21(4):ar64. doi: 10.1187/cbe.20-12-0275

TABLE 8.

Items and factor-loading scores of the final version of the PAD-Ia

Item Caring for or Investment in Plants (α = 0.77) Necessity of Plants/ Importance of Plants (α = 0.83) Plants Better than Animals (α = 0.71) Animals Better than Plants (α = 0.82) Positive Affect (α = 0.77) General Attention (α = 0.83)
1. I enjoy caring for houseplants. 0.725
2. I enjoy caring for plants in an outdoor environment. 0.897
3. I care about the plants that are in my neighborhood. 0.454
4. Plants are important because they help reduce the effects of climate change. 0.562
5. Plants are an important source of food for the world. 0.708
6. Plants are important to ecosystems. 0.800
7. Plants are important because they are a source of oxygen. 0.711
8. Plants are important because they are a source of new medicines. 0.602
9. Animals need plants in order to survive. 0.719
10. I think plants are more useful to learn about than animals. 0.691
11. I think plants are more interesting to learn about than animals. 0.674
12. If I had to choose, I would rather keep houseplants than animal house pets. 0.431
13. When I go outdoors, I am more likely to notice the individual plants around me than any animals in the environment. 0.335
14. Learning about animals interests me more than learning about plants. 0.762
15. Animal conservation is more interesting to me than plant conservation. 0.711
16. I think animals are more interesting than plants, in general. 0.838
17. I enjoy going outdoors because of all the plants in the environment. 0.408
18. I would enjoy visiting a botanical garden. 0.564
19. I have a lot of good memories about plants. 0.605
20. Being around plants makes me feel happy. 0.876
21. In general, I think plants are very interesting organisms. 0.409
22. I notice the crops that are grown near where I live. 0.402
23. When I take a walk outside, I notice the plants around me. 0.508
24. When I am in a wooded area I notice individual plants, not just the forest as a whole. 0.825
25. I notice all the plants in my environment, not just those that I eat. 0.758

aα indicates Cronbach’s alpha reliability score for each factor.