The student clearly describes and explains the research design, detailing the independent measures design and the rationale behind its selection to enhance validity. The student effectively outlines the sampling technique, identifying self-selected sampling as the primary method and noting its efficiency. Relevant characteristics of the research participants, including age, gender, and background, are appropriately stated, and the choice of participants is justified in relation to the study's requirements. Additionally, the student identifies and describes the controlled variables, providing clear reasoning for their control to enhance the study's external validity. While the student lists all materials used in the methodology, they do not clarify their choice of materials, which would have strengthened their explanation.
