Until now, the conventional approach using two distinct groups, experimental and control, continues to dominate research, especially education research. Researchers, particularly those who are active in this domain, readily recognise this pattern when surveying literature. This article explores the use of the Solomon four-group design as a methodological tool in experimental and quasi-experimental research, aiming to replicate and extend the flowchart developed by Braver and Braver. The article examines the strengths of the Solomon four-group design, highlighting its relevance in addressing methodological issues and its potential applicability. It emphasises the design's ability to first detect the presence or absence of pre-test sensitisation and then facilitate the analysis of both qualitative and quantitative variables, considering the existence or absence of pre-test sensitisation in each case. Hence, the paper provides comprehensive and practical guidelines for researchers and practitioners interested in applying this research design. The implications for future studies are also discussed, offering insights into the broader impact of methodological rigour in social sciences.