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Finally, we have controlling variable. A controlling variable is an environmental event, most commonly a discriminative stimulus, which controls or determines the likelihood that a given response will be emitted.
Term
Definition
Stimulus
A physical energy change capable of affecting an organism through one of its receptors: photoreceptors, phonoreceptors, chemoreceptors (gustatory and olfactory), mechanoreceptors (touch), thermoreceptors, and free nerve endings.
Discriminative Stimulus
A stimulus in the presence of which a given response has a history of being reinforced.
Reinforcement
A stimulus following a response that increases or strengthens the likelihood of that response occurring in the future, under similar conditions.
Punishment
A stimulus following a response that decreases or weakens the likelihood of that response occurring in the future, under similar conditions.
Controlling Variable
An environmental event, most commonly a discriminative stimulus, which controls or determines the likelihood that a given response will be emitted.
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