Dr. Riley wanted to know if adolescent computer use has an immediate effect on sustained attention. Dr. Riley assigned participants into one of two groups (computer use vs. no computer use) by flipping a coin. Dr. Riley used
A) matching.
B) random assignment.
C) a correlational design.
D) a field experiment.

Question

Quizplus · Accepted Answer

Dr. Riley used random assignment, as participants were assigned to either the computer use or no computer use group by flipping a coin, which is a method of randomization. This ensures that there is an equal chance for participants to be in either group and helps to minimize the influence of any extraneous variables, making it a strong choice for experimental design.

Dr Riley Wanted to Know If Adolescent Computer Use Has