Unconditioned stimulus (US)
A stimulus that elicits an automatic response without any prior learning
Unplanned model
These are the naturally occurring models that exist in a person’s daily life and community settings that evoke imitative behaviors.
Validity
Measurement is trustworthy when the measurement that produces data is applicable and specific to the target behavior of interest and the relevant dimension of that behavior; in other words, you
Value-altering effect
An effect of motivating operations that causes an in-the-moment increase or decrease in the current reinforcing effectiveness of a specific stimulus.
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6th Edition TCO
Variability
On a line graph, the degree to which the data points bounce around the data path.
6th Edition TCO
Variable interval schedule (VI)
A basic schedule of intermittent reinforcement in which a variable amount of time must elapse before a single correct response produces reinforcement.
Variable ratio schedule (VR)
A basic schedule of intermittent reinforcement in which a variable number of correct responses must be emitted for reinforcement to be delivered.
Variable time
A time-based schedule of noncontingent reinforcement delivery. It sets an average amount of time between the delivery of noncontingent reinforcers.
Verbal behavior
An application of applied behavior analysis that approaches learning language in a way that connects vocal and non-vocal language with its function.
6th Edition TCO
Verification
Demonstrating that the independent variable alone is responsible for the effect on the dependent variable by removing the independent variable and observing the dependent variable return to baseline levels.