A verbal praise marker — a specific word or sound spoken at the precise moment of a correct response to mark that exact moment as the rewarded behavior — is one of the most powerful tools in horse training because it gives the trainer the ability to communicate with pinpoint timing exactly which behavior is being rewarded, even when the physical reward cannot be delivered instantaneously. The marker bridges the gap between the behavior and the reward, preserving the information content of the reward across the time it takes to deliver it.
The most commonly used verbal marker is a clicker sound produced by a mechanical clicker, but a spoken word — good, yes, click spoken as a word — works just as well when used consistently. The critical requirement is that the marker is used instantly at the correct moment and is always followed by a meaningful reward — food, a scratch in a favorite spot, or a full release of all pressure and a moment of rest. If the marker is sometimes followed by a reward and sometimes not, it loses its meaning as a precise informational signal and becomes unreliable.
Establishing a verbal praise marker begins with conditioning the horse to understand that the marker predicts the reward, regardless of what the horse was doing when it heard it. This is done through simple pairing sessions: say the marker word, immediately provide the reward, repeat many times. Once the horse reliably shows anticipation of the reward following the marker — an ear flick, a searching movement toward where the reward typically comes from — the marker is ready to use in training.
Warwick Schiller's use of a verbal yes marker in his training is a practical example of this approach — he uses the spoken marker to precisely identify the correct moment during groundwork and liberty exercises, which allows him to reward tiny tries and incremental improvements that would be difficult to reward with a physical aid alone. The precision of the marker accelerates learning significantly in exercises where the correct response is brief, subtle, or embedded in a longer behavioral sequence.