Question 47 The results from Grether & Plott's experiment in which they varied whether subjects received monetary incent

[correctanswer]

Question 47
The results from Grether & Plott's experiment in which they varied whether subjects received monetary incentives (“real money”) or only chose over hypothetical outcomes (“imaginary money”), showed the preference reversal phenomenon
on both treatment groups
on the “real money” treatment group, but not on the “imaginary money” treatment group
on the “imaginary money” treatment group, but not on the “real money” treatment group
on neither of the two treatment groups