In an experiment comparing two treatments,the researcher assigns participants to treatment conditions so that each condition has 15 seven-year-old children and 10 eight-year-old children.For this study,what method is being used to control participant age?
A)randomization
B)matching
C)holding constant
D)limiting the range

Question

In an experiment comparing two treatments,the researcher assigns participants to treatment conditions so that each condition has 15 seven-year-old children and 10 eight-year-old children.For this study,what method is being used to control participant age?
A)​randomization
B)​matching
C)holding constant
D)​limiting the range

Quizplus · Accepted Answer

Matching would involve pairing participants based on some characteristic, such as age, and then randomly assigning one member of each pair to each condition. This ensures that the two groups are similar in terms of age. Randomization involves randomly assigning participants to conditions without any attempt to match them first. Holding constant would involve controlling or keeping constant age, possibly by recruiting only participants within a certain age range or excluding those outside of a certain age range. Limiting the range would involve excluding participants who fall outside of a certain age range. Since the question specifically asks about controlling for participant age and specifies that each condition has a specific number of seven-year-old and eight-year-old children, the method being used is matching.

In an Experiment Comparing Two Treatments,the Researcher Assigns Participants to Treatment