Eisenberger, Lieberman and Williams (2003) studied the extent to which being excluded by others created brain responses similar to those created by physical pain. The participants, who were all studied while they were in an fMRI scanner, first experienced a baseline session, then a session in which they were included in a game, and then a session in which they were excluded in a game. Which of the following designs was used?
a. Within participants
b. Between participants
c. Latin square
d. Multiple regression
Question 2
Which of the following topics would be most appropriate to study as an independent variable in an experimental design?
a. participant race
b. participant intelligence
c. participant gender
d. participant mood
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