What is the primary focus of experimental design in research?

The primary focus of experimental design in research is on trial construction. This involves planning how to set up an experiment to ensure that it effectively tests a hypothesis or answers a research question. Proper experimental design includes defining variables, selecting appropriate methods for data collection, determining the sample size, and deciding on controls and randomization procedures.

By focusing on trial construction, researchers can establish a framework that minimizes biases and confounding variables, allowing for more reliable and valid results. This careful planning stage is essential, as it lays the groundwork for how the experiment will unfold and how data will be interpreted. Effective trial construction ultimately contributes to the overall integrity and reproducibility of scientific research.