The student has effectively described and explained the research design, incorporating the Independent Measures Design and providing a clear explanation of its impact on the validity and quality of the investigation. They have also correctly identified and explained the chosen sampling technique as opportunity sampling, demonstrating an understanding of its appropriateness for the exploration. Additionally, the student has provided relevant characteristics of the research participants, including their age range, group size, and language proficiency, and has justified the choice of participants with careful consideration of their characteristics. Furthermore, they have identified and described the controlled variables of the exploration, along with clear reasoning for why specific variables were controlled, ensuring that no uncontrolled variables significantly influenced the results. Lastly, the student has listed all materials used in the methodology and clarified their choice of materials, adhering to the IB guidelines for this section of the IA.
