Recently I have received the same question from several people. Why do you need a clicker when you could just use your voice as a bridging signal? What are the advantages of a clicker?
Why a bridging signal is needed
If you want to reinforce certain behaviour one has to reward the horse at the moment the behaviour is still going on or within a few seconds the behaviour has stopped in order for the animal to associate the behaviour with the reward he is receiving. It is almost impossible to give the horse his reward during the behaviour, which is why positive reinforcement trainers use a bridge signal.
A bridge or bridging signal is a specific signal for the horse that connects the moment the reward is given to the behaviour he was doing. Most clicker trainers use a special device named a clicker as bridge. The clicker makes a click sound.
When the horse has learned that a click is always followed by a reward, the horse starts to pay really good attention to the behaviour he was displaying at the time of the click. He is smart and he wants to train you to give him more clicks. Animals like it when they have the feeling they can control the environment (you and his rewards).
Advantage of a clicker
A clicker always makes the same sound and therefor it ‘travels’ the same path in the brain. The horse understands quickly what the sounds means. A click is not influenced by emotions of the human voice. It doesn’t matter who presses the clicker, it still sounds the same. So other people can ride and train your horse without confusing the horse about the bridge signal. The click of a clicker can be delivered instantly. Timing is everything. The more accurate your bridge is, the easier the horse learns what you want to reward him for.
As long as the bridge signal is a specific sound it can be used. I taught my horse to respond to different bridges. I use the high pitched and long stretched word “Good” as bridge and Kyra also knows that my tongue click is a bridge.
Advantages of other bridges
The main advantages of a verbal bridge and a tongue click are obvious. The first is that you always have it with you. No matter where you go you can always use your bridging signal.
The second is being able to keep your hands free. Using a clicker always requires a hand to click with. In some situations being able to use both hands can have be a huge advantage.
Disadvantages of a vocal bridge
A vocal bridge always has a little delay, because before you can speak you have to inhale fist. Your voice also can differ according to circumstances: a cold may effect your voice, but also your emotions. When I am excited or annoyed the pitch can change, for us it means the same thing because we know the meaning of the letter of a word. A horse knows the meaning of the sounds of a word. Because your voice sounds only “generally” the same every time, it makes a different, wider pathway in the brain. This sound means: a reward is coming. And this one too. And this one means the same thing. The horse needs to decide every time he hears your voice: was this a bridge or not? Therefor it can take a little longer for the horse to become “clicker savvy” with a voice bridge.
When I introduced the word “Good” I still lived in The Netherlands. They generally don’t speak English to horses, so it was a safe word to use. It was a unique sound. I was the only one who used it and my horse was never trained by someone else. The difficultly with the word “Good” in Canada is that other people use it as praise (reward) instead as bridge signal. That means it might not always be followed by a reward. This can confuse the horse.
Another reason to teach your horse the click of a clicker as the bridge: other people can train or ride your horse and communicate clearly. The click sounds the same every time.
Related post: Introduce your horse to the click