Seonglae ChoNon-probability sampling technique where the sample is expanded by starting with a small number of initial participants who then recommend other participants
Limitations
- Lack of representativeness: Due to its network-based nature, it may not represent the entire population
- Potential for bias: Higher probability of connecting people with similar characteristics (homophily bias)
Suitable for studying rare or hard-to-reach populations (e.g., drug users, sexual minorities, immigrant communities, etc.)