Research instrument
| Construct | Items | Authors |
|---|---|---|
| Materialistic values | 1. I admire people who own expensive homes, cars, and clothes | Richins (2004) |
| 2. Buying things gives me a lot of pleasure | ||
| 3. My life would be happier if I owned certain things I don’t have | ||
| 4. The things I own say a lot about how well I’m doing in life | ||
| 5. I try to keep my life simple, as far as possessions are concerned. (reversed) | ||
| 6. I’d be happier if I could afford to buy more things | ||
| 7. I like to own things that impress people | ||
| 8. I like a lot of luxury in my life | ||
| 9. It sometimes bothers me quite a bit that I can’t afford to buy all the things that I’d like | ||
| Green values | 1. It is important to me that the products I use do not harm the environment | Haws et al. (2014) |
| 2. I consider the potential environmental impact of my actions when making many of my decisions | ||
| 3. My purchase habits are affected by my concern for our environment | ||
| 4. I am concerned about wasting the resources of our planet | ||
| 5. I would describe myself as environmentally responsible | ||
| 6. I am willing to be inconvenient to take actions that are environmentally friendly | ||
| Psychological discomfort | 1. Sometimes I feel guilty about buying too much | Adapted from Séré by Lanauze and Siadou-Martin (2019) |
| 2. When I know I am buying products that are not environmentally friendly, I feel uncomfortable | ||
| 3. Psychologically, I am disturbed by the fact that I consume too much | ||
| 4. Consumption causes me some anxiety | ||
| Motivation to change behavior | 1. I think I should reduce my consumption | Adapted from Séré by Lanauze and Siadou-Martin (2019) |
| 2. I’m going to buy less things | ||
| 3. I am willing to reduce my consumption |
| Construct | Items | Authors |
|---|---|---|
| Materialistic values | 1. I admire people who own expensive homes, cars, and clothes | |
| 2. Buying things gives me a lot of pleasure | ||
| 3. My life would be happier if I owned certain things I don’t have | ||
| 4. The things I own say a lot about how well I’m doing in life | ||
| 5. I try to keep my life simple, as far as possessions are concerned. (reversed) | ||
| 6. I’d be happier if I could afford to buy more things | ||
| 7. I like to own things that impress people | ||
| 8. I like a lot of luxury in my life | ||
| 9. It sometimes bothers me quite a bit that I can’t afford to buy all the things that I’d like | ||
| Green values | 1. It is important to me that the products I use do not harm the environment | |
| 2. I consider the potential environmental impact of my actions when making many of my decisions | ||
| 3. My purchase habits are affected by my concern for our environment | ||
| 4. I am concerned about wasting the resources of our planet | ||
| 5. I would describe myself as environmentally responsible | ||
| 6. I am willing to be inconvenient to take actions that are environmentally friendly | ||
| Psychological discomfort | 1. Sometimes I feel guilty about buying too much | Adapted from Séré by Lanauze and Siadou-Martin (2019) |
| 2. When I know I am buying products that are not environmentally friendly, I feel uncomfortable | ||
| 3. Psychologically, I am disturbed by the fact that I consume too much | ||
| 4. Consumption causes me some anxiety | ||
| Motivation to change behavior | 1. I think I should reduce my consumption | Adapted from Séré by Lanauze and Siadou-Martin (2019) |
| 2. I’m going to buy less things | ||
| 3. I am willing to reduce my consumption |
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