Clicker trainingClicker training Clicker training is a system of teaching that uses positive reinforcement in combination with an event marker. is a system of teaching that uses positive reinforcementPositive reinforcement (R+) Adding something the animal will work for to strengthen (increase the frequency of) a behavior. For example, giving the dog a treat for sitting in order to increase the probability that the dog will sit again. in combination with an event markerEvent marker A signal used to mark desired behavior at the instant it occurs. The clicker is an event marker..