In this design, each participant or subject serves as his or her ...

[fnuegbu]

In this design, each participant or subject serves as his or her own control.
 
  a. between subjects c. within subjects
  b. between groups d. all of these

Question 2

A within subjects design is also called a _____ design.
 
  a. between subjects c. independent groups
  b. between groups d. repeated measures

[jasonq]

Answer to Question 1

C
The same participants serve in the experimental and control conditions in a within subjects design.

Answer to Question 2

D
The repeated measures design is the same as a within subjects design.

[fnuegbu]

Thanks for the timely response, appreciate it

[Missbam101]

Gracias!