| Construct | Items |
| Environmental concern | I am concerned about the state of the world environment and how it will affect my future. |
| I am concerned that humanity is overusing the environment. | |
| I am concerned about the disastrous consequences of human destruction of nature. | |
| Environmental knowledge | I have more knowledge about environmental issues than an average person. |
| I have the knowledge about the eco-friendly labels used on product packages. | |
| I am very knowledgeable about environmental and social issues. | |
| PCE | I feel I can help solve natural resource problem by conserving water and energy. |
| I can protect the environment by buying green products | |
| I think there are many things I can do to protect the environment. | |
| Eco label credibility | I trust eco-friendly labels. |
| I trust producers of the products with eco labels. | |
| I trust the store personnel that sells me green products. | |
| I trust products with eco labels. | |
| I trust that eco-friendly labels are recognized by government agencies or experts. | |
| Ease of purchase | Purchasing eco-friendly products is very cumbersome. |
| It is more convenient to buy something that is not eco-friendly than to buy eco-friendly products. | |
| It is not easy to see eco-friendly products in the store where I usually shop. | |
| Purchase intention | I am committed to buying green products. |
| My willingness to buy eco-friendly products is high. | |
| I will pay more for a product that has more environmental benefits. | |
| Purchase behavior | I have been purchasing green products at a regular basis. |
| When I have a choice between two equal products, I purchase the one less harmful to other people and the environment. |