(Scenario I) the Study Described in Scenario I Required Participants

Multiple Choice

(Scenario I) The study described in Scenario I required participants to volunteer two nights of sleep. What might the researchers have done to minimize the attrition rate?

A) Provide a monetary incentive for each night and a bonus incentive for participating in both nights.
B) Increase the number of days between each sleep condition.
C) Ensure consistency in the way behavior was assessed so participants knew what to expect the next time they were studied.
D) all of the above