What type of research design is used when evaluating the effects of stress on decision-making in Johan’s article?

The choice of an experimental design is appropriate in this context because such designs allow researchers to manipulate independent variables—in this case, levels of stress—and observe the effects on dependent variables, such as decision-making. By controlling the environment and conditions under which participants make decisions, it becomes possible to establish causality rather than just correlation. This methodology is crucial in psychological research, as it helps isolate the impact of stress on decision-making processes.

In experimental designs, participants might be randomly assigned to different stress conditions, allowing researchers to measure how these variations influence their decision-making outcomes. This control and manipulation are hallmarks of experimental research, distinguishing it from other types of designs like longitudinal, cross-sectional, or qualitative analysis, which do not primarily focus on the causal relationships between variables.