Operant Conditioning Paper

One famous behaviourist was Skinner (1904-1990) who was an American psychologist and believed in the role of reinforcement. There are two types of reinforcement: positive and negative. Positive reinforcement occurs when a particular behaviour is followed by a consequence that is desired such as receiving food, money or verbal praise. Whereas negative reinforcement takes place when a particular behaviour removes something unpleasant. Skinner used both positive and negative reinforcement in his experiment where he worked with rats and pigeons. He used a “Skinner box” to investigate the key values of learning new and challenging behaviours. Skinner used the theory of operant conditioning and would place the rat or pigeon into the “Skinner Box” the animal would then be curious and sniff and run around the box until eventually it would press the lever, which would release a food pellet. After a while the animal would carry out this behaviour many times, as it has learnt that after pressing the lever it will receive a food pellet as a consequence. As the pellet is experienced as reinforcing and something that the animal desires, this increases the chance of the behaviour being repeated. This is called

Once it was knocked a pellets immediately came into the box. Each time the rats would knock the lever pellets would come down. The rats learned quickly. After Skinner learned that the rats could be trained using operant conditioning, he decided to further his experiment.

Negative reinforcement is removing an unpleasant consequence when a behavior is exhibited in order to encourage said behavior. This was shown when

Skinner 's theory of operant conditioning was based on the work of Thorndike that he reviewed (1948). Edward Thorndike studied learning in animals using a puzzle box to propose the theory known as the 'Law of Effect ', responses that produce a satisfying effect in a situation become more likely to occur again in that situation, and responses that produce a discomforting effect become less likely to occur again in that situation. Skinner introduced a new term to Thorndike’s theory known as reinforcement (Skinner, 1948). Reinforcement is a stimulus (as a reward or the removal of an electric shock) that increases the probability of a desired response in operant conditioning by being applied or affected following the desired response. Skinner branched off Thorndike’s approach studied operant conditioning by experimenting on animals using conditioning chambers also known as a Skinner box and in 1948

Thereby, Skinner produced experiments whereby rats would navigate through mazes to achieve the goal of a box containing food. His interest was the behaviour of the rat, taking the right turn to achieve the desired result, food. To begin with the rats would take the wrong turn but with experience, they became more skilful. The rats learning behaviour was measured in two ways, firstly the length of time it took from start to end and secondly, the reduction in errors. This was a lengthy experiment which led Skinner to produce ‘the Skinner box’. Whereby, rats learnt to press a lever and pigeons learnt to peck a key in order to attain food, also known as behaviour shaping. This experiment lacks ecological validity as the animals are kept in a controlled environment which is dissimilar to their natural habitat. However, the results which were attained could not have been possible in natural circumstances. Skinner wanted to observe if behaviour could be learned through reaching a desired outcome such as positive reinforcement which needed to be

Reinforcement is the main contributing factor in operant conditioning. There is more than one way to go about establishing reinforcement, if a delay occurs between the response and the reinforcement the response may not become strengthened. It is likely that if the reinforcement occurs immediately after the response that there will be a definite strengthening of the response. Continuous reinforcement is when reinforcement occurs at every instance of the desired response. Intermittent reinforcement occurs when a response is reinforced some of the time. The different schedules of reinforcement influence patterns of response. Intermittent schedules offer greater resistance to extinction than continuous schedules.

B. F. Skinner’s entire system is based on operant conditioning. The organism is in the process of “operating” on the environment, which in ordinary terms means it is bouncing around the world, doing what it does. During this “operating,” the organism encounters a special kind of stimulus, called a reinforcing stimulus, or simply a reinforcer. This special stimulus has the effect of increasing the operant - which is the behavior occurring just before the reinforcer. This is operant

Skinner’s reinforcement experiments conducted on rats showed the principles of operant conditioning. While working with rats, Skinner would place them in a Skinner box with a lever attached to a feeding tube. After multiple trials, rats learned the connection between the lever and food, and started to spend more time in the box procuring food than performing any other action. He used positive reinforcement, and negative reinforcement to produce or inhibit specific target behaviors. Therefore, if a specific behavior is reinforced then the probability of that behavior occurring again is increased. Based on Skinner’s view, this theory can be applied to learning because learning is nothing more than a change in behavior. Operant conditioning encourages positive reinforcement, which can be applied in the classroom environment to get the good behavior you want and need from students. One of the ways of reinforcing a student’s behavior is through praise. Also teachers can build operant conditioning techniques into their lesson plans to teach children possible skills as well as good behaviors. For example: to give a smiley face, or motivational stamps to encourage children to perform correctly and encourage them to repeat such action again.

A virtual rat, Sniffy, was used for this experiment. Sniffy the Virtual Rat, Pro Version 3.0 allows for the demonstration of Pavlovian and operant conditioning of a virtual rat. Tom Alloway, Greg Wilson, and Jeff Graham, authors of Sniffy the Virtual Rat designed this program to be an affordable alternative for students to gain “access to the main phenomena of classical and operant conditioning that courses on the psychology of learning typically discuss” (Jakubow, 2007). The program allows for simulations for Pavlovian conditioning such as acquisition, extinction, spontaneous recovery, stimulus-intensity effects, compound conditioning, blocking, overshadowing, overexpectation, inhibition, sensory preconditioning,

Operant conditioning has made a significant contribution into the development of psychology. However, as with most psychological theories, this theory it has its strengths and weaknesses. Nevertheless, operant conditioning, with both its positive and negative aspects, is very important in promoting learning of desirable behaviors or removal of undesirable

And example of operant conditioning is the training of rats to press a lever in order to obtain a food reward. The pressing of the lever (conditioned response) is associated with the food reward (unconditioned stimulus). After a training period, the rat will show the conditioned response of pressing the lever even without the presence of the unconditioned stimulus of the food.

Skinner conducted a series of research experiments with rats and pigeons under controlled laboratory conditions using a specially designed cage. By doing so he sought to demonstrate that behaviour can be created and reinforced by external factors. The puzzle box he created for his experiments has become so widely used that it is now known as the “Skinner box”. Animals would be placed in a cage which had a bar lever mechanism used to dispense food; Skinner would measure the frequency of the bar pressing and introduce different variables into the experiments. This led to his discovery of 'partial reinforcement' and its correlation to the slower extinction of shaped behaviour. When food pellets would only be dispensed once in a while (as opposed to every pressing) Skinner noticed that it took longer for the learnt behaviour to become extinct. The powerful phenomenon of partial reinforcement can be noticed in gambling establishments; a player on a slot machine is more likely to keep up their behaviour of playing if the rewards are unpredictable and occasional. The player becomes more persistent in their gambling in the hope that the next coin will be the winner (Hunt, 1993).

Skinner and his colleagues (Gass & Larry, 2008), learning or a change of behaviour on the part of the learner, is brought about by a process known as 'operant conditioning' which is the result of repeated training. Operant means 'voluntary behaviour' which is the result of learner's own free-will and is not forced by any outsider or thing (Ortega, 2009). The learner will demonstrate the new behaviour first as a response to a system of a reward or punishment, and finally it will become an automatic response.

Operant conditioning developed by Skinner is one of the learning methods according to which the likelihood of behavior is increased or decreased by the use of reinforcement or punishment. In case of positive reinforcement a certain behavior becomes stronger by the effect of experiencing some positive condition. In case of negative reinforcement a certain behavior becomes stronger by the outcome of stopping or staying away from some negative condition. In case of extinction a certain behavior is becomes weaker by the outcome of avoiding to experiencing some positive condition or stopping some negative condition.

Hence, in his experiment, Skinner placed rats in the Skinner box and observed its’ behaviors. Initially, these rats would be randomly moving around exploring, and would usually press the bar accidently. At this point, a food pellet would drop into the tray. He observed that if a hungry rat receives a pellet of