Whitney is a student in Dr. Reese's research lab. Whitney has developed a study examining the effect of various scents on mood. Dr. Reese recommended that Whitney randomly assign all 100 of her research participants to help reduce any errors related to individual differences. Dr. Reese also encouraged Whitney to randomly assign the sequence of the administered interventions to each group of 25 participants. Dr. Reese's recommendations are in an effort to reduce all of the following EXCEPT:

Question

Quizplus · Accepted Answer

Main effects refer to the direct effects of an independent variable on a dependent variable, not the potential biases or errors in a study design that random assignment aims to reduce. Practice, order, and carryover effects are all types of potential biases or errors that random assignment and randomization of intervention sequences can help mitigate.

Whitney Is a Student in Dr