There are several different possible rewards schedules, here are some of the major ones. The first one is the Continuous reward. So, if we look at time here on the x axis and the activity that the player or person is engaging in, a continuous reward says, guess what, you get a reward each time, the reward is automatic it goes for every incidence of the action. The second kind of reward is a Fixed Ratio reward. Fixed Ratio says, if let's say, that the activity happens a certain number of times. Here I'm putting down the times that someone does something, and that might be visiting your website or that might be pushing a lever in some of these behavioral studies, or it might be something involved in playing a game. But, let's assume that there's this certain level of actions. Fixed ratio says, every number of times you get the reward.