CHP 12 ANTECEDENT STIMULUS CONTROL Flashcards
antecedent stimulus
an observable stimulus that’s present before the behavior occurs
discriminated operant behavior
operant behavior that’s systematically influenced by antecedent stimuli
SD (discriminative stimulus)
an antecedent stimulus that can evoke a specific operant response because the individual has learned that when the SD is present, that response will be reinforced
SΔ
an antecedent stimulus that decreases a specific operant response because the individual has learned that when the SΔ is present, that response won’t be reinforced (extinction)
SDp
an antecedent stimulus that decreases a specific operant response because the individual has learned that when the SDp is present, that response will be punished (it’s a warning stimulus that suppresses the response, when it’s removed the punishable behavior increases in probability)
the 3 terms of the 3-term contingency
Antecedent, Behavior, Consequence
Discrimination training
a procedure in which an operant response is reinforced in the presence of an SD and extinguished in the presence of an SΔ
Discrimination training of African rats
Rats are reinforced when they identify (behavior) a landmine (SD) and not reinforced when they identify (behavior) a non-mine (SΔ)
IF mine AND identify –> THEN no reinforcer
IF non-mine AND identify –> THEN no reinforcer
generalization
occurs when a novel stimlus resembling the SD evokes the response, despite that response never having been reinforced in the presence of that novel stimulus
stimulus-generalization gradients
bell curves, the closer it resembles the SD, the more they respond
Tactics for promoting generalization
1) teach behaviors that can will contact natural contingencies of reinforcement
2) train diversely (multiple teachers, settings, etc.)
3) arrange antecedent stimuli that will cue generalization
stimulus-response chain
the fixed sequence of operant responses, each evoked by a response-produced SD
Task analysis
a precise specification of the sequence of antecedents, responses, and consequences that comprise a stimulus-response chain
backward chaining
the final link in the stimulus-response chain is taught first and once that link is mastered, additional links are added in reverse order
forward chaining
teaching links in the stimulus-response chain in the order they will need to be emitted