Masking is used a. to prime a participant prior to the onset ...

[FButt]

Masking is used
 
  a. to prime a participant prior to the onset of a target stimulus.
  b. to manipulate the extent to which an observer is aware of a stimulus.
  c. to bias an observer to perceive a stimulus in a particular way.
  d. to prevent a participant from using visual cues in an experiment on auditory perception.

Question 2

A differential research design is an example of a ____.
 
  a. nonequivalent group design
 b. nonequivalent control group design
  c. time-series design
 d. pretest-posttest design

[cdmart10]

Answer to Question 1

B

Answer to Question 2

a