In an experiment,participants are randomly assigned to treatment conditions
A)to help protect the internal validity of the study.
B)to help protect the external validity of the study.
C)to help protect both the internal and external validity.
D)as an alternative to manipulation.

Question

Quizplus · Accepted Answer

Randomly assigning participants to treatment conditions helps protect the internal validity of the study by reducing potential confounding variables that could affect the study outcome. It ensures that the treatment group and control group are similar in all aspects except for the treatment received, making it easier to attribute any observed differences in outcomes to the treatment rather than other variables. Random assignment may also indirectly help protect external validity by increasing the generalizability of the study results.

In an Experiment,participants Are Randomly Assigned to Treatment Conditions