The student's research design is clearly described and explained, with a correct identification of the design as independent measures. The sampling technique is also correctly described and explained as a combination of convenience and self-selected sampling. The student provides relevant characteristics of the research participants, such as their age, and justifies their choice of participants by recruiting willing IB students who would understand the importance of the IA and be motivated and engaged. The student states and provides reasons for all controlled variables, including environment, participant characteristics, and standardization of stimulus material and procedure. The materials used are stated and the choice of each material is explained. Overall, the student demonstrates a strong understanding of the research design and implementation.
