One of the differences between experimental research and correlational research is that
A)in experimental research all variables are measured, while in correlational research at least one variable is manipulated
B)in correlational research all variables are measured, while in experimental research at least one variable is manipulated
C)experimental research tends to use random sampling, while correlational research tends to use random assignment
D)experimental research tends to have higher external validity than correlational research

Question

Quizplus · Accepted Answer

In correlational research, researchers observe what naturally goes on in the world without directly interfering with it. They measure the variables as they naturally occur. In contrast, experimental research involves the manipulation of at least one variable (independent variable) to determine its effect on another variable (dependent variable), allowing for the establishment of cause-and-effect relationships.

One of the Differences Between Experimental Research and Correlational Research