Which of the following things can be done to reduce the effect of individual differences?
A) Using a matched-groups design
B) Using a within-groups design
C) Collecting measurements from more people
D) All of the above can be done to reduce the effect of individual differences
E) Nothing can be done to reduce the effect of individual differences

Question

Quizplus · Accepted Answer

Using a matched-groups or within-groups design and collecting measurements from more people are all methods that can be used to reduce the effect of individual differences. A matched-groups design involves pairing individuals who are similar on certain characteristics, such as age or gender, and then randomly assigning one member of each pair to the experimental or control group. This helps to ensure that any differences observed between the groups are due to the intervention being tested, rather than differences between the individuals. A within-groups design involves comparing each individual's performance or behavior before and after an intervention, which helps to control for individual differences that remain constant over time. Collecting measurements from more people can also help to reduce the impact of individual differences because it increases the sample size and reduces the influence of outliers or extreme values.

Which of the Following Things Can Be Done to Reduce