Behavior 101 #5: Differential Reinforcement

Now that we’ve learned about the four quadrants of reinforcement and punishment, how EOs and AOs effect these, how to identify the function of a behavior, and how to use schedules of reinforcement, we can start to think about how to use these behavior principles to alter behavior. In order to do that, we must learn how items are discriminated within our environment. How do we know that a spoon is good for eating soup, but a knife is better for cutting? We’ve learned to discriminate between these two things. If we use a spoon versus a knife for soup, we’ll get access to our reinforcement (the soup) must faster and with much less effort. But if I try and cut a prime rib with a spoon, well, I’ll be making a huge mess and probably just pick the thing up and take a bite out of it before I’m successful with cutting it. Our history of differential reinforcement tells us that the quickest way to get the soup in our mouth is with the use of a spoon, but the quickest way to cut the steak will be with a knife.

Differential reinforcement is the systematic use of positive reinforcement used in behavior modification programs- usually to get rid of unwanted behaviors and to increase wanted or replacement behaviors. Basically you reinforce behaviors under certain circumstances, and don’t reinforce under other circumstances. The target behavior is put on extinction, and replaced with some other behavior, depending on what type differential reinforcement program you are using. There are several types of differential reinforcement, each one used depending on the circumstances and function of the behavior.

DRO- differential reinforcement of other behaviors. In this situation the instructor will reinforce any appropriate behavior that is occurring instead of the target behavior. For instance, you set a timer for 10 minutes and reinforce at the end of the 10 minutes, if the target behavior has not occurred. Any other behavior can occur as long as it’s not the target behavior. The length of time you choose will be dependent on how often the behavior is occurring, and how short of an interval it needs to be to be initially successful.

DRH- differential reinforcement of high rates of behavior. The instructor reinforces the behavior only after it has occurred at high rates in a given period of time, generally starting at a rate slightly higher than is already occurring and often increasing until a predetermined rate is reached. As with DRO, the length of time you choose will be dependent on how often the behavior is occurring, and how short of an interval it needs to be to be initially successful.

DRL- differential reinforcement of low rates of behavior. The opposite of a DRH program. The instructor reinforces the behavior for occurring at low rates in a period of time, generally progressing lower as the program goes on until a predetermined rate is reached. Again- you guessed it- the length of time of each interval is dependent on how often the behavior occurs, etc. etc.

DRA- differential reinforcement of alternative behavior. This is similar to a DRO, except you’re looking to reinforce only a specific alternative behavior, usually each time if occurs, instead of any appropriate behavior.

DRI- differential reinforcement of an incompatible behavior. The instructor reinforces a behavior that is incompatible with the target behavior, which means the target behavior cannot occur at the same time as the incompatible behavior. The incompatible behavior can be physically incompatible, or functionally incompatible. You might reinforce a person singing a song to eliminate that person’s whistling behavior (Or you reinforce them keeping their mouth shut?).

If you're sitting, you can't also be running!

If you’re sitting, you can’t also be running!

Differential reinforcement in some way is responsible for most of our learning. You’re differentially reinforced for saying “Mom” when addressing your mom, but not when addressing your dad. You’re reinforced for sitting at your desk in school and doing work when in English, but for during gym. Or recess. Or after school hours (assuming you’re not in detention- what did you do this time?).

When using differential reinforcement, it’s important to ignore the unwanted behavior, and reinforcement according to your DR strategy. Don’t forget how to properly reinforce:

Reinforce immediately
Reinforce frequently
Reinforce enthusiastically
Describe the behavior (e.g. “Good Sit!!!”)
Use a variety of proven reinforcers

Be prepared for an extinction bust, where the behavior gets worse before it gets better. Differential reinforcement is a good way to combat unwanted behaviors without the use of punishment.

Gastric Dilation Volvulus, a.k.a. Bloat

Gastric Dilation Volvulus, also known commonly as bloat and torsion, is a scary, life threatening condition that can strike dogs of any size at any age, although it tends to afflict the larger breeds with deep chest cavities. It is the mother of all veterinary medical emergencies. No one is sure exactly what causes it, but the veterinary profession has an abundance of theories. Bloat occurs when the stomach rapidly fills with gas then, because the enlarged stomach is top-heavy, the stomach flips over (torsion), twisting the ends off and trapping the gas. The gas continues to expand, with no exit route, and the stomach can grow to massive sizes. You can easily imagine from there how quickly things can go downhill. Often the twisted stomach tissue starts to die as the blood flow is compromised, and other organs get displaced as the stomach grows. The twisted stomach can block major blood vessels that carry blood back to the heart, quickly sending the dog into shock. Shock can occur within minutes of bloat starting, so this is not a ‘wait and see’ type of medical condition, this is truly a dire emergency.

Most dogs will act uncomfortable, sometimes pacing, trying to throw up but nothing comes. Many people, including vets, often think it’s just a ‘stomach ache’ and instruct owners to give some pepto bismol and call back in the morning. The veterinary and dog breeder world will offer you many suggestions for the prevention of bloat- from elevated feeders and no play for 30 minutes after eating, to feeding non-grain or raw based diets, not letting your dog scarf down food, and not allowing them to drink loads of water at a time. But despite all this bloat can still strike. Tiki, my 10 year old long-haired German Shepherd, is a dainty eater. She often takes upwards of 10 minutes to eat a cup of food, and generally will leave a bit behind. She eats grain free, from an elevated feeder, and being 10 years old with early stages of arthritis, she doesn’t run around much during the day, let alone after she’s eaten dinner. She’s never been a water tanker, taking a few dainty sips at a time before laying down, coming back for more later if she’s still thirsty. When bloat stuck at 7pm as I was fixing dinner, she hadn’t even eaten since breakfast that morning, and certainly hadn’t engaged in any physical activity within the 90 minutes prior.

All I can say of the experience- harrowing to say the least- was that I thank everything in the universe that I was at home when it started. Had I been at work, even with my roommate home all day with her, she certainly would have perished. My roommate is not a dog person, and while she likes dogs, she’s certainly not well versed in their medical anomalies. In fact, if someone hadn’t educated me on this subject in the past, I’d almost certainly have not dropped everything, grabbed Tiki up, and rushed the the emergency vet. Many people aren’t sure what’s going on, and decide to wait and see, or take their dogs to the vet first thing in the morning. By then it’s too late.

When bloat first presented itself, Tiki was laying in her usual corner of the kitchen while I cooked and my roommate worked on her laptop on the table. She started panting- no entirely unusual in Texas for a long haired GSD, even with the a/c on, but something about her expression made my roommate suddenly ask, “What’s wrong with Tiki?”

I looked over at her and sure enough, she was panting lightly, but had the barest hint on her face that she was uncomfortable. I called her to me, and she got up and obediently came, and I kneeled down to put my hands on it. I rubbed her face then ran my hands down her side, and stopped cold at her stomach. It wasn’t overly distended- yet. But it was rock hard. Outwardly nothing looked amiss, the stomach hadn’t grown yet to be noticeable enough just looking at her (although that’s what most people will first notice about bloat- the visibly distended belly. By that time, it’s almost always too late.)

My heart stopped. I knew instantly what is was. It felt like she had eaten a really big meal. My naturally dainty, slender GSD had a thanksgiving dinner belly- hard to the touch and larger than normal. I switched off the stove top, gabbed my keys and wallet, and literally threw Tiki into the back of my car. The e-vet was 20 minutes away and I made it in barely 10, going 105mph down the freeway while Tiki cried in the back. If I had gotten pulled over I was prepared to lead a police chase right to the front door of the vet.

I didn’t bother to park, stopping right in front of the door, grabbing Tiki and running into the vet. Luckily a tech came right out when they heard the door chime. I practically threw Tiki at her, mumbling incoherently about bloat, and the tech immediately took her back for x-rays. Not 10 minutes later the vet and tech were both back with x-rays. The news was dire. Her stomach had flipped completely and she would need immediate surgery, with no guarantee of survival. They wouldn’t know the damage to the stomach tissue or surrounding organs until they got in there. Her blood pressure was already fluctuating, and her blood work came back with some irregularities from the bloat. I signed the consent papers at the same time as they were prepping for surgery. Before I even left the vet they already had her open on the operating table- less than 30 minutes from when her bloat started.

The wait was agonizing. Even with proper medical interventions, survival is less than 80%, if any part of the stomach had died off, survival drops to below 50%. Survival depends greatly on how long the stomach has been flipped, if any stomach tissue has died from loss of blood, and if the dog was approaching or already in a state of shock before the surgery. Without aggressive medical interventions, death is nearly certain once the stomach flips, and the emergency vet confided to me afterward that she wasn’t going to tell me this, but that particular e-vet had seen many cases of bloat- and not a single survivor, mostly due to owners not knowing what was happening and waiting too long to bring them in. Manually trying to flip the stomach using a tube down the throat has limited success, and bloat will nearly always reoccur. Surgery was our only option.

It was an agonizing 3 hour surgery, but the vet didn’t call immediately to tell me the damage was too severe, so I was hopeful. When she did finally call it was to say things went as well as they could have, and Tiki was now sleeping. I could come get her the next morning and have her transferred to my regular vet.

Waiting at home for the hour between when the e-vet closed and the regular vet opens.

Waiting at home for the hour between when the e-vet closed and the regular vet opens.

When I picked her up the vet gave me a list of complications to look out for, such as behavior that would signal a change in blood pressure or signs of shock. I paid the bill (a bit over $4000, for the curious. /gulp) and I took her to my regular vet and they admitted her for the day for observation while I was at work. My regular vet, a 60+ year old James Harriot-type man, told me he, also, had never had a bloat survivor in his practice in 40 years as a practicing vet. He was so impressed that she had survived, that he brought in all the techs and the other vets to come meet her while he gave them a run down on bloat signs and symptoms (which he did while kneeling on the floor with Tiki and wrapping a bandage around her stomach). By the time I picked her up after work, the vet was confident she was mostly out of the woods, to keep monitoring her, and he sent me home with antibiotics, telling me to come back in two weeks to remove the 40 staples that were holding her together.

Feeling well enough to jump not eh bed while I was washing the sheets, but oh! too weak to move! when I need to make the bed

Feeling well enough to jump on the bed while I was washing the sheets, but oh! too weak to move! when I need to make the bed

In addition to antibiotics, she received antacids to help with the stomach acid on her healing stomach. Part of her surgery included gastropexy- fastening the stomach to the body wall to prevent torsion in the future (as reoccurrence of bloat in dogs without a gastropexy reaches nearly 100%, with a gastropexy, it’s less than 5%).

Finally feeling well enough, 3 days post-surgery, to show a bone!

Finally feeling well enough, 3 days post-surgery, to chew a bone!

Tiki developed a minor skin infection during the end of the second week of healing, apparently licking in secret as we never caught her actively licking her staples, so into the cone of shame she went and she received a week of antibiotics.

"I do not like the cone of shame"

“I do not like the cone of shame”

4 1/2 months later and Tiki is doing great. Her hair has grown back, she’s had no bloat reoccurrence, no complications, and she healed perfectly. She will celebrate her 10th birthday this fall!

4 months post-bloat!

4 months post-bloat!

 

Happy 8th Gotcha Day!

It’s hard to believe how much time has flown by. Eight years ago today, we brought home the amazing Miss Dahlia. She came home a sweet dog lacking confidence and has grown into a sweet dog with the confidence to tackle everything from moving houses to agility to silly tricks to being able to go outside during a thunderstorm. She’s just the best.

So, this year I bring you, 10 things Dahlia has learned this year. It’s been quite a year for our girl!

1. That sharing my house with another dog is really not as bad as I thought. It might actually be kind of fun.

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2. That having another dog to play tug with is kind of awesome.

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3. That even though my Mom was told not to shove toys in my face to get me to play, I will try that with my brother. Sometimes it even works!

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4. That having my own yard is kind of awesome.

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5. That barking at the dogs in the yard behind me is the best.

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6. That I don’t really mind (that much) when my brother leaps at my head.

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7. That I can share my toys and treats and even the same bowl of water.

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8. That I am still the best fun policing dog around.

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9. That the “wait and come game” is even more fun with a friend!

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10. That nothing gets me down, not even vestibular disease.

From this...

From this…

...to this.

…to this.

She’s one of the seven great dogs (there are only seven at a time, you know) and I hope for many more years to come for my girl!