Showing posts with label capturing. Show all posts
Showing posts with label capturing. Show all posts

Sunday, August 18, 2013

Kathy Sdao Seminar: 10 Ways to Get Behavior

As presented by Kathy Sdao.

Picture is unrelated. But beautiful!

1. Physical Pressure
Also known as “molding,” this method involves the trainer physically putting the dog into the position you want. To do this, the dog needs to yield to your action. Although this method can work (it’s how I taught Maisy to shake/give me her paw, and how many people teach sit), it does require a cooperative animal. Since the dog is passively allowing the behavior to happen, it can be tricky to get the dog to understand that he needs to offer the behavior.

2. Prompting
Similar to using physical pressure, in this method, the trainer elicits the response by doing something that prompts the dog to take action. For example, if you walk towards a dog that is facing you, he is likely to step backwards. This is a common way to teach the dog to back up. This tends to be used mostly with reflexive instincts.

3. Luring
Kathy actually listed this as 2b because it is a subset of prompting. In luring, we prompt the dog to do a behavior by using food to get the dog to do what we want. Although it is widely used among positive trainers, the dog is acting more passively than some people would want.

4. Targeting
This requires the animal to place a body part against an item. This does require some pre-teaching so that the dog understands what he’s supposed to do when the target item is presented, but once the dog has learned that, it can be used to elicit a variety of behaviors. It can be used in a similar way to luring, although it doesn’t have to be. It’s a great technique for people who want the dog to be an active participant because the dog has to think through the options and make choices.

5. Capturing
In capturing, the trainer can be quite lazy. Instead of figuring out how to elicit a behavior, the trainer simply watches for what she wants and then rewards it. This makes capturing great for behaviors that are already in the dog’s repertoire and that he’s likely to do (such as sitting or lying down). Capturing doesn’t work for behaviors the dog doesn’t innately do.

6. Shaping
This is what many people think of when they think of “clicker training.” In shaping, we allow the dog to offer behaviors and then click/reward small steps towards the goal behavior. It requires the dog to be an active participant in his training, and can often result in very creative behaviors.

7. Classical Conditioning
First discovered and studied by Pavlov, classical conditioning is a method of getting behavior that relies on creating associations between two things to create automatic responses. In Pavlov’s case, he could get the behavior of drooling by ringing a bell. Classical conditioning is used most often in behavior modification, but can also be used for developing strong recalls.

8. Removal of Inhibitors
If something is preventing a dog from performing a behavior, removing that thing will often allow you to get the behavior. Often, the thing that is inhibiting the behavior is something scary, so this is really about allowing the dog to feel safe enough to perform.

9. Modeling or Mimicry
This method of getting behavior involves demonstrating what you want, and then having the dog copy what you’re doing. Although it is possible for dogs to do this, they are not naturally good at it. It’s really more useful for primates.

10. Verbal Instructions

This one isn’t used for animals at all as it requires a shared understanding of verbal language. In other words, it’s only for humans, and only for those who speak and understand the same language! Still, it is a way to get behavior, so I’ve included it here!

Monday, October 1, 2012

Shedd Animal Training Seminar: Getting Behavior

So far, we’ve learned that Ken prefers to use positive reinforcement when training behaviors, and that he finds the use of a bridging stimulus to be very helpful. But we haven’t talked about how he gets the behavior he wants to bridge and reinforce, so let’s do that today! The first thing you need to know is that while some trainers will use only one or two methods to the exclusion of all others, Ken uses what works. The method that he chooses will depend on the animal and the behavior.

As an interesting side note, while the concepts were familiar to me, Ken uses some different terminology than I’m used to. Indeed, the words that zoological trainers use differ from things we say in the dog world. As a lover of words, I actually found this fascinating. For example, he uses the word “shaping” differently than we do in the dog world; for Ken, “shaping” simply means training. Each of the techniques he discussed can be broken down into small increments, and he will reward each successive approximation regardless of what technique he’s using… which is shaping. Just not the way we dog people typically think of it.

Targeting
Targeting is probably the most common technique used in the zoological setting, mostly because it is incredibly useful for teaching husbandry tasks. (Ironically, it’s probably the one I use the least with my dog, although I have found it incredibly helpful when I’m trying to learn a physical skill myself.) Targeting involves teaching the animal to touch an object with a body part, either briefly or for an extended duration. For example, a dolphin may be taught to touch its nose to a colored shape, or a sea otter may be taught to grab a plastic buoy with its paws.


Scanning
Sometimes called capturing in non-zoological settings, scanning is where the trainer watches for the animal to perform a desired behavior. When the animal does- for example when a dolphin jumps in the air or a beluga whale spits water- the trainer reinforces the animal at the exact moment the behavior happens. As you can imagine, the use of a bridging stimulus is incredibly important here. Scanning is also sometimes called free-shaping, as the trainer will capture a first step toward the behavior and then gradually increase the criteria.

Baiting
Baiting is also known as luring, and it can be a controversial method. Baiting is done by using food to elicit the desired behavior, and if not done well, can create animals and trainers who are dependent on the use of food to complete the behavior. We actually saw some baiting in action when Ken was working to teach Tanner the sea lion to go in the water on cue. He would give the cue (swim!) and then toss a fish in the water. While it is very useful- especially for novice animals and trainers- Ken said it’s typically not his first choice for a lot of behaviors. Still, he rarely says “never” to a training technique.

Environmental Manipulation
I love environmental manipulation; it can make things so easy sometimes. This is simply the process of arranging things in the environment so that the desired behavior is the only or the most likely option for the animal. It obviously won’t work for every behavior you want, but when it does, it’s genius. What could be better than setting the animal up for success and giving the trainer the opportunity to reinforce the behavior?

Modeling
This technique, sometimes called molding, is more common in the dog world than zoological settings. Modeling is where you physically manipulate the animal’s body into the position you want (like when a trainer pushes a dog into a sit), and as you can imagine, tends to be either physically impossible or incredibly dangerous with zoo animals. Still, Ken refused to discount it entirely, citing Koko the gorilla as an example. Koko’s trainers taught her sign language by manipulating her fingers and hands into each word, something they could have never targeted, captured, or lured into happening.

Mimicry
This is not a common method of training as it requires a fairly sophisticated animal who understands that it should copy what another animal is doing. Although Ken has done some work around mimicry, it is not widely used. A similar concept is social facilitation, in which an animal learns to do something from another animal. This is typically accidental, such as when a dog learns to bark at passers-by from another dog.

Abstract Learning
Abstract learning is a complex method of learning. This is where two ideas are combined to create a new concept. It happens often with humans, such as when we attend lectures, but is not common in the animal world, although it does happen with cognitive researchers. Alex the Parrot is an excellent example.


This list is certainly not all inclusive. There are other ways of training animals, but these were presented as some of the most common methods. I initially learned through the use of baiting/luring, and appreciate it as a technique. I also do a fair amount of scanning (both capturing and free-shaping). What about you guys? Which technique do you use the most? Are there techniques you’ve used that aren’t listed here? I’d love to hear about your experiences.

Thursday, December 16, 2010

Ian Dunbar Seminar: Types of Reward-Based Training (and Which One is Best?)

Ian Dunbar is widely known as a reward-based trainer, and is often credited as revolutionizing dog training. But what people don’t talk about as often is which type of positive training he uses, and why. Today, I’d like to share with you the four types of reward-based training that Ian identified, and what he likes- and doesn’t- about each of them.

Plan A: Lure-Reward Training
Okay, let’s cut to the chase. Ian likes lure-reward training best, and I can understand why. Lure-reward training is generally very easy and fast to do, making it ideal for the average pet owner who just wants the basics, and wants them now.

Indeed, that’s exactly why Ian prefers it. Since dogs will predictably follow a lure, Ian says that you get a 100% response rate right from the beginning. (For what it’s worth, I think that’s an over-estimate. Some dogs are tragically difficult to lure into a down, but even so, you do get a high rate of response.) Because the dog’s success rate is so high, you can easily pair the behavior with the cue from the first repetition, making it the fastest way to get a behavior on cue.

Since the behavior is so predictable, Ian says that you can train with a differential reinforcement schedule from trial two in order to improve, not just maintain, behavior from the beginning. Ian also likes that lure-reward training comes with a built-in hand signal, and that you can work on several behaviors in the same session.

The downside to lure-reward training happens when people do it poorly. When people fail to phase out the lures in a timely matter, they become a bribe. Instead of using the treat to instruct the dog, people often become dependent upon using food to coerce the behavior from the dog. Ian also says that lure-reward training doesn’t always work with adolescent dogs, especially if the lure wasn’t faded out when he was a puppy.

Plan B: All-or-None Training
All-or-none training is Ian’s go-to when lures aren’t working because the dog sees the food as nothing more as bribe- and one less interesting than whatever is going on in the environment. All-or-none training seems to be Ian’s term for “capturing” a behavior. You wait for the dog to do the desired behavior, and then give a reward.

All-or-none training is easy. Either the dog is sitting, or he is not. It doesn’t take much sophistication, and as a result, is well-suited to basic behaviors and novice trainers. The down side is that since you aren’t giving any instructions (like with a lure), it’s hard to predict when the dog is going to do the behavior. In turn, this makes it much more difficult to get the behavior on cue.

Plan C: Clicker Training
Ian rarely uses clicker training, and he never uses it to teach the basics. Instead, he says clicker training is for anything you can’t get through luring or all-or-none training. Since he believes you can lure everything a pet dog needs, he doesn’t introduce it to his students until a level 3 or higher obedience class. Those dogs already have reliable behaviors, and he introduces the clicker to help refine the behavior, make it more precise, or make it flashier.

He doesn’t like clicker training because it is hard to attach a cue. He also believes that people click too often; because he thinks differential reinforcement is the best schedule to use, he believes that it slows down training if your dog is getting clicked more than 50% of the time. This number seems low to me- I’ve heard clicker trainers say that your dog should be getting it right 80% of the time before you increase your criteria.

Plan Never: Physical Prompting in Training
Physical prompting involves applying pressure with the trainer’s hands or by manipulating the collar in order to get a behavior. He includes tools such as shock collars and the Gentle Leader in this category.

Ian says that using physical prompting involves a lot of skill, more than most students have, and that in his experience, gentle prompting often turns into “physical splatting.” He also believes that physical prompting is a crutch which is incredible difficult to phase out.

Honestly, I agree. Although you can use physical guidance to help get behaviors, it is notoriously difficult to get rid of, so I generally avoid it. What I found interesting is that Ian doesn’t think props (like a physical channel to teach the dog to back up straight) are a crutch, and doesn’t find it hard to phase them out. I can’t comment on this- Maisy generally finds props scary, and it’s easier to find a way to teach a behavior without a prop as it is to desensitize her to the prop.


I have used all four of these methods. Most of Maisy’s foundation behaviors were taught with lures, because that’s what we were taught in our big-box store puppy classes. Once we began competition training, I started using a clicker to shape behaviors. I’ve done relatively little capturing and physical prompting, but I have used both. I don’t think any one of them is “best.” Instead, I choose my method based on the task at hand. I will admit that I tend to use shaping a lot because I think it’s the most fun. Still, Ian’s probably right that lure-reward training is easier and faster for the average pet owner.

What about you guys? Which method do you use most? Does it differ if you’re just starting out with a behavior? How do you choose which method to use? Do you think one is better than another? Let me know what you think!