Random assignment is a defining feature of an experiment.What does it mean?
A) It means that participants randomly select the particular experimental manipulations they will experience.
B) It means that participants were randomly selected from the population of interest.
C) It means that whether participants are in one condition or another is determined by chance.
D) It means that participants are assigned to the experimental conditions on the basis of their pre-existing differences.

Question

Quizplus · Accepted Answer

Random assignment in an experiment means that participants are randomly assigned to the different experimental conditions. This is done to ensure that there are no pre-existing differences between the groups that could influence the results. By assigning participants to conditions randomly, researchers can be more confident that any differences observed between the groups are due to the experimental manipulation and not some other factor.

Random Assignment Is a Defining Feature of an Experiment