What is the difference between concurrent-measures designs and repeated-measures designs?
A)Concurrent-measures design is an independent-groups design; repeated-measures design is a within-group design.
B)Concurrent-measures designs expose participants to the levels of the independent variable at roughly the same time; repeated-measures designs expose participants to the levels of the independent variable sequentially.
C)Concurrent-measures designs can have any number of levels of an independent variable; repeated-measures designs can only have two levels of the independent variable.
D)There is no difference; they are two terms for the same design.

Question

What is the difference between concurrent-measures designs and repeated-measures designs? 
A)Concurrent-measures design is an independent-groups design; repeated-measures design is a within-group design. 
B)Concurrent-measures designs expose participants to the levels of the independent variable at roughly the same time; repeated-measures designs expose participants to the levels of the independent variable sequentially. 
C)Concurrent-measures designs can have any number of levels of an independent variable; repeated-measures designs can only have two levels of the independent variable. 
D)There is no difference; they are two terms for the same design.

Quizplus · Accepted Answer

Concurrent-measures designs and repeated-measures designs are both within-group designs, but the key difference between them is when the levels of the independent variable are presented to participants. In concurrent-measures designs, participants are exposed to all levels of the independent variable simultaneously or at roughly the same time, while in repeated-measures designs, participants are exposed to the levels of the independent variable sequentially over time.

What Is the Difference Between Concurrent-Measures Designs and Repeated-Measures Designs