Answer:a. Most manipulations are straightforward. False.
b. Staged manipulations are designed to get participants involved in the situation and to make them think that it is a real experience. True
c. A staged experiment may be difficult to replicate by other researchers. True.
d. Straightforward manipulations are often difficult to interpret. False
Explanation:straightforward manipulation
manipulate variables with instructions and stimulus presentations.(verbal, written, video, computer)
staged manipulation
staged events that occur during the experiment in order to manipulate the independent variable successfully.