A recent study of the behavior of slot players has caused some controversy. Anthony F Lucas, Ph.D., and Katherine A. Spilde, Ph.D, furthered the research into whether gamblers would be able to tell what was the relative Return to Player (RTP) of a particular slot machine game and whether they would migrate to a machine with a higher RTP.

Why is this important? Well, some casinos have seen a significant decline in slot revenues, and it has been argued that decreasing RTP is a major factor because a lower RTP will lead to a shorter time on device; players want more time for their money.