Which kind of research is the only type in which a researcher can establish cause and effect?
A) Observational research
B) Experimental research
C) Non-experimental research
D) Descriptive research

Question

Quizplus · Accepted Answer

Experimental research is the only type of research where a researcher can manipulate a variable to establish a cause-and-effect relationship between two or more variables. In observational research, the researcher only observes and records data without manipulating any variables, so it cannot establish cause-and-effect relationships with certainty. Non-experimental research and descriptive research also cannot establish cause-and-effect relationships.

Which Kind of Research Is the Only Type in Which