The methodology depends on whether you promote an eco-friendly product / service or whether you promote an eco-friendly practice:
USING A PROMOTED PRODUCT / SERVICE
1) Review of existing data: If you focus on promoting environmentally friendly products or services through a limited number of businesses (e.g. shop sellers, construction companies) or non-profit actors (e.g. a non-profit or a government agency), you can interview their representatives and review their documentation to assess the number of customers who accessed the promoted product / service. This option is often easier (and often also quite precise) but it does not tell you whether the people who accessed the product are using it or not. Alternatively, if you support a large market (for example, through demand creation efforts), you can consult with relevant industry associations or government bodies for the data on sales (if available).
2) Individual interviews with target group members: If you cannot rely on existing data, you can conduct individual interviews with a representative sample of target group members. This approach is suitable only if the product is likely to be used by at least 10-20% of the survey respondents, so that the data you receive is sufficiently accurate.
RECOMMENDED SURVEY QUESTION (Q) AND POSSIBLE ANSWERS (A)
Q1: Have you heard of [specify the product or service]? (if required, provide more details about the service / photo, including a photo of the product)
A1: yes / no / is not sure / no response
(ask the following question only if the previous answer is YES)
Q2: Do you currently use [specify the product or service]?
A2: yes / no / no response
To calculate the indicator’s value, divide the number of respondents who use the promoted product / service by the total number of respondents. Multiply the result by 100 to convert it to a percentage.
FOLLOWING A PROMOTED PRACTICE
To assess whether people follow the promoted practice, you can either observe or interview a representative sample of the target group members.
Observations: If you promote a practice that is easy to observe (such as whether people use reusable bags when shopping), it is recommended that you conduct observations, as they are likely to give you more precise data.
Interviews: The second option is to interview the target group members. When doing so, be aware of the social desirability bias – a situation when the respondents say what they think the ‘socially desired’ practice is instead of what they actually do. As much as possible, do not ask about the practice directly. For example, instead of asking “Do you recycle your household waste?” ask, “Where do you dispose of your household’s solid waste?” or “Can you please show me where you throw your household waste?” Ensure that the enumerators are trained in how to probe for further details without leading the respondent to a certain answer (for example, if a respondent says “I throw the waste in a waste container”, it is not possible to conclude whether the respondent recycles or not and more probing / clarity is needed).
To calculate the indicator’s value, divide the number of respondents who follow the promoted practice by the total number of respondents. Multiply the result by 100 to convert it to a percentage.