One key aspect of an experiment that is missing in other research designs is
A)the ability to test predictions.
B)the use of variables.
C)the use of operational definitions.
D)random assignment.

Question

Quizplus · Accepted Answer

Random assignment is a key aspect of experiments that sets it apart from other research designs. It involves assigning participants to different groups randomly to ensure that each group is similar to each other and any differences in the outcome can be attributed to the manipulation of the independent variable. Other research designs, such as observational studies or correlational studies, do not involve random assignment, therefore making it harder to establish causation. The other options listed (A, B, C) are also important aspects of experiments but are not unique to experiments and can be present in other research designs as well.

One Key Aspect of an Experiment That Is Missing in Other