Which of the Following Is a Practical Consideration in a Multiple-Independent-Groups

Multiple Choice

Which of the following is a practical consideration in a multiple-independent-groups design?

A) You will need a large number of participants to fill the multiple groups.
B) You will need a large number of participants to conduct proper matching of a variable of interest.
C) You will need to guard against participants becoming bored or fatigued over many administrations of the dependent variable.
D) All of the above.