Another group of researchers, who do not have millions of dollars to spend on their study, take a more qualitative approach to investigating the issue. Specifically, they invite real winners of previous lotteries to answer a number of open-ended survey questions about their personal lives. The researchers then discuss the responses as a group in order to come up with a list of themes that the responses can be sorted into. What type of analysis does this approach represent?
Heterogeneous-subsets analysis
Naturalistic-observation analysis
Consensus-based content analysis
Quantitative-distributional analysis