Final answer:
The research method described in the question is the mixed-method approach, combining qualitative and quantitative methods to study the causes of littering.
Step-by-step explanation:
The research method described in the question is the mixed-method approach. This approach combines both qualitative and quantitative methods to gather and analyze data. In this case, Kirsten plans to use in-depth interviews (qualitative) and a well-being questionnaire (quantitative) to understand the causes of littering.
The qualitative component of the research involves conducting in-depth interviews with people from two communities. These interviews will provide insights into people's thoughts, beliefs, and behaviors related to littering. The use of people's voices and personal experiences enhances the richness and depth of the data.
The quantitative component of the research involves collecting cold, hard-facts from a well-being questionnaire given to each person. This questionnaire will likely include closed-ended questions with response options that can be analyzed statistically to identify trends and patterns.