Exam 3: Terms Flashcards
(29 cards)
Operant Conditioning
a procedure in which a behavior becomes stronger or weaker (is more likely to happen) depending on its consequences.
Extinction
when a desired consequence is discontinued, the behavior producing that consequence will be weakened. E.g. when lever pressing no longer leads to food, rats will decrease lever pressing behavior.
Spontaneous Recovery
a previously extinguished behavior returns if there is a break in training. E.g. if rats who no longer lever press are removed from the experimental apparatus for 24 hours, lever pressing will return.
Discrete Trial Procedure
a procedure where the behavior of the participant ends the trial.
Free Operant Procedure
a procedure where the behavior of the participant can be repeated many times.
Reinforcement
the rate or probability of the occurrence of a behavior is increased when something (a reinforcer) is presented or removed following the behavior.
Punishment
the rate or probability of the occurrence of a behavior is decreased when something (a punisher) is presented or removed following the behavior.
Positive Reinforcement
behavior is strengthened when it is followed by the appearance of (or an increase in the intensity of) a stimulus, or positive reinforcer
Negative Reinforcement
behavior is strengthened when it is followed by the removal of (or a decrease in the intensity of) a stimulus, or negative reinforcer.
Positive Punishment
behavior is weakened when it is followed by the appearance of (or an increase in the intensity of) a stimulus, or positive punisher.
Negative Punishment
behavior is weakened when it is followed by the removal of (or a decrease in the intensity of) a stimulus, or negative punisher.
Establishing Operations
a procedure that produces a change in an individual’s environment that alters how effectively something functions as a reinforcer.
Primary (unconditioned) Reinforcers
stimuli that are innately reinforcing (no learning required), such as food, water, sex, social contact, relief from temperature extremes, drugs etc.
Secondary (conditioned) Reinforcers
stimuli that are reinforcing because of their association with other reinforcers (including other secondary reinforcers). These include praise, recognition, smiles, money etc.
Shaping
reinforcing successive approximations of the target behavior.
Chaining
training an animal or person to perform a chain of behaviors (though once a chain is established, it can be thought of as one act or unit of behavior).
Task Analysis
The first step in chaining is to break the task down into its individual elements.
Forward Chaining
the first task is reinforced until it is performed reliably.
- Then the first two tasks are required for reinforcement, until they are both performed reliably, and so on.
Backward Chaining
the last element is trained first, then the second to last etc. (note that the behavior is not performed backwards!).
- Shaping may be used to train individual elements in the chain.
Intrinsic Reinforcement
Reinforcement that is provided by the mere act of performing the behavior.
Extrinsic Reinforcement
Reinforcement provided by a consequence that is external to the behavior.
Contrafreeloading
animals of all species tested (expect cats!) at least sometimes prefer to “work” for food than get it for free.
Positive Contrast
enhanced responding for a large reward because of prior experience with a less attractive outcome.
Negative Contrast
depressed responding for a small reward because of prior experience with a better outcome.