The simplest research questions ask about the relationship between two variables, but even then, the potential effects of other variables must be considered. This unit teaches about study designs of different levels of complexity, interaction between variables, and the need to avoid or control for confounding variables. We also discuss the fundamental difference between observational and experimental research, and the role of theory in formulating the research question and interpreting study findings. Examples are drawn from different areas, including science, health and social sciences, education and engineering.
online quizzes from 0 cp unit (25%), 10-min video in pairs (35%) and assignment (25%).
Discipline knowledge in any area