Katrina is interested in studying the relationship between attention deficit disorder and behavioural problems in schoolchildren,but she believes that the students' socioeconomic statuses may affect her results.She studies two groups of children through an intervention treatment and makes sure that all children in both groups are from homes with the same level of income.What technique does Katrina use in this study?

Question

Quizplus · Accepted Answer

Katrina uses the technique of matched samples to control for the potential confounding variable of socioeconomic status. By selecting participants from homes with the same level of income, she ensures that any differences observed between the two groups in terms of attention deficit disorder and behavioural problems are less likely to be due to differences in socioeconomic status. Matched pairs typically involve each participant being matched with another participant on some characteristic, whereas matched samples involve groups of participants being matched on a particular characteristic. Random sampling involves selecting participants at random from a larger population and is not relevant to this study. Third-variable correlation refers to a situation where a correlation between two variables may be due to a third, unmeasured variable that is associated with both. While this is a potential issue in any correlational study, it is not directly relevant to the specific technique used in this study.

Katrina Is Interested in Studying the Relationship Between Attention Deficit