Unit 2 Flashcards
Unconditional reflex
= unconditional stimulus -> unconditional response
Unconditional stimulus
triggers an unconditional response to make up an unconditional reflex
Unconditional response
triggered by an unconditional stimulus to make up an unconditional reflex
Conditional reflex
occur depending on many conditions
CS + CR = conditional reflex
Conditional stimulus
stimulates a condition response (CR) to make up a conditional reflex
Conditional response
occurs after a conditional stimulus (CS) to make up a conditional reflex
Pavlov identified two types of reflexes, _____ and _____.
unconditional
conditional
Higher-order conditioning
pairing a neutral stimulus with an established conditional stimulus (CS)
Frolov
In higher-order conditioning, a neutral stimulus is paired with a well-established ______ stimulus.
conditional
latency
measure of learning corresponding to response time
Test trials
aka Probe trials
the CS is presented alone (no US) to see if the CR occurs
conditional stimulus -> conditional response
Pseudoconditioning
the tendency of a neutral stimuli to elicit a CR after a US elicits a reflex.
aka a false appearance of a CR that arises from unrelated factors
US + (other factor) -> CR
Trace conditioning
CS-US pairing; gap between the two stimuli occuring
CS -> time -> US -> UR
Delay conditioning
CS + US contiguity; the US appears before the CS disappears
e.g., thunder begins before lightning end
CS + US -> UR
Simultaneous conditioning
The CS and US start and end together
- weak procedure
CS + US -> UR
Backward conditioning
The CS follows the US. Rarely works in lab (Pavlov assistant tried 427 times)
US -> CS -> UR
Contingency
if-then; CS-US pairing
↑Reliability ↑Learning
Continguity
the closeness in time or space between two events.
ISI
Interstimulus interval
the contiguity of CS-US pairing.
The shorter the ISI, the more efficient the conditioning
Taste aversion
Pairing a distinctive taste with something nausea-inducing.
ISI can be several hours.
Compound stimulus
2+ stimuli paired together.
Tested together than separately to determine learning
Overshadowing
one stimulus overshadowing the effect of the other
Latent inhibition
The appearance of a stimulus without the US, which causes interference with the ability of that stimulus to become a CS later.
Affects contingency.
Blocking
The prior experience with a stimulus interferes with the ability for it to become a CS
Sensory preconditioning
Two neutral stimuli are repeatedly paired together without a US.
Then, one is paired with a US to become a CS
-> the unpaired stimulus then creates a CR response
InterTRIAL interval
The gap between successive trials. Affects the rate of conditioning.
Intertrial intervals -> longer is better
Interstimulus intervals -> shorter is better
Four variables that affect the rate of conditioning are:
how the CS and US are paired; CS–US contingency; CS–US contiguity; stimulus features; prior experience with CS and US; number of CS–US pairings; intertrial interval; age; temperament; emotional state/stress.
Extinction
Repeated presentation of the CS alone until the CR no longer occurs
CS is paired with an absence of the US. Not “forgetting”
Spontaneous recovery
The reoccurrence of a CR from an extinguished CS
Stimulus Substitution Theory
As per Pavlov, the CS is a substitution for the US.
Repeated pairings cause the US-UR neural link to be established between the CS-UR. CS/US stimulate the same area of the brain.
According to stimulus substitution theory, the ______ substitutes for the ______.
conditional stimulus (CS)
unconditional stimulus (US)