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operant conditionimg

operant conditionimg The theory of B.F. Skinner is based upon the idea that learning is a function of change in overt behavior. Changes in behavior are the result of an individual's response to events (stimuli) that occur in the environment. A response produces a consequence such as defining a word, hitting a ball, or solving a math problem. When a particular Stimulus-Response (S-R) pattern is reinforced (rewarded), the individual is conditioned to respond. The distinctive characteristic of operant conditioning relative to previous forms of behaviorism (e.g., Thorndike, Hull) is that the organism can emit responses instead of only eliciting response due to an external stimulus. Reinforcement is the key element in Skinner's S-R theory. A reinforcer is anything that strengthens the desired response. It could be verbal praise, a good grade or a feeling of increased accomplishment or satisfaction. The theory also covers negative reinforcers -- any stimulus that results in the increased frequency of a response when it is withdrawn (different from adversive stimuli -- punishment -- which result in reduced responses). A great deal of attention was given to schedules of reinforcement (e.g. interval versus ratio) and their effects on establishing and maintaining behavior. One of the distinctive aspects of Skinner's theory is that it attempted to provide behavioral explanations for a broad range of cognitive phenomena. For example, Skinner explained drive (motivation) in terms of deprivation and reinforcement schedules. Skinner (1957) tried to account for verbal learning and language within the operant conditioning paradigm, although this effort was strongly rejected by linguists and psycholinguists. Skinner (1971) deals with the issue of free will and social control. Operant conditioning has been widely applied in clinical settings (i.e., behavior modification) as well as teaching (i.e., classroom management) and instructional development (e.g., programmed instruction). Parenthetically, it should be noted that Skinner rejected the idea of theories of learning (see Skinner, 1950). By way of example, consider the implications of reinforcement theory as applied to the development of programmed instruction (Markle, 1969; Skinner, 1968) 1. Practice should take the form of question (stimulus) - answer (response) frames which expose the student to the subject in gradual steps 2. Require that the learner make a response for every frame and receive immediate feedback 3. Try to arrange the difficulty of the questions so the response is always correct and hence a positive reinforcement 4. Ensure that good performance in the lesson is paired with secondary reinforcers such as verbal praise, prizes and good grades. 1. Behavior that is positively reinforced will reoccur; intermittent reinforcement is particularly effective 2. Information should be presented in small amounts so that responses can be reinforced ("shaping") 3. Reinforcements will generalize across similar stimuli ("stimulus generalization") producing secondary conditioning www.udayton.edu/~psych/DJP/histsys/pdfhs/hsbehavior2.pdf www.public.iastate.edu/~hdfs502/powerpoint_files/Thomas_07.PDF B.F. skinners’ theory is based on the idea that learning is the function of the change in obvious behavior. In response to events that occur in the environment, there are changes in a behavior. A response results in consequences such as defining a word, hitting a ball, or solving a math problem. When a particular S-R pattern is rewarded, the person is trained to react. Skinner’s is usually taken to be the most enveloping, but not the only form of behaviorism. One of the characteristic features of Skinner’s theory is that it attempts to provide behavioral clarification for a wide range of Cognitive occurrence. Support is the key element in Skinner’s S-R theory. This strengthens the preferred reaction. It could be verbal praise, a good grade or a feeling of increased accomplishment or satisfaction. The theory also covers punishments that result in the fall of undesired reactions. Operant conditioning has been widely applied in clinical settings as well as teaching and instructional progress. Consider the suggestions of this theory for the development of programmed instruction: 1. Practice should take the form of question-answer frames that expose the student to the subject in steady steps. 2. Guarantee the learner makes a response for every frame and also receives immediate advice. 3. Arrange the difficulty of the questions so the response is always correct and that's why there is a positive back up. 4. Ensure that a good presentation in the lesson is paired with secondary support such a verbal praise, rewards, and good grades. Behavior that is positively supported will reoccur; constant support particularly effective. Information should be presented in small amounts so that responses can be reinforced. Reinforcements will simplify across the same ‘stimulus generalization’ giving secondary conditioning. Bibliography:

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