Week 3 Flashcards
(41 cards)
Learning
A change in behaviour due to the environment.
Aspects to learning
- Frequency
- Intensity
- Speed
- Form/topograpghy
Types of learning
- Habituation
-You live near a busy street, and after a while, you stop noticing the constant traffic noise. - Respondent (i.e., Classical/Pavlovian) Conditioning
-Pavlov presented dogs with a sound (a bell) just before giving them food - Operant Conditioning
-A child receiving a piece of candy for cleaning up their room.
not all changes in behaviour can be attributed to learning (phineas gage)
Classical conditioning
- Pavlovian Conditioning
- Respondent Conditioning (the technical name for it).
- How we learn by association
- How autonomic responses occur when they usually would not
Unconditional Stimulus (US)
a stimulus that naturally and automatically triggers a response without any prior learning or conditioning
Unconditional Response (US)
It is the automatic, reflexive response to the unconditioned stimulus (US) without any prior learning or conditioning
(biologically relevant)
Conditional Stimulus (CS)
A neutral thing that starts making you react because it’s been paired with something else that makes you react automatically.
bell with food
Conditional Response (CR)
When something makes you behave in a certain way because you’ve learned to associate it with a particular situation
salivation
Probe trial
- Present the CS alone (i.e., with no US).
- Also called “test trials”
Probe trial characteristics
- In general, more exposure = greater conditional responding
- Early exposure produces more learning than later exposure.
i.e. Non-linear. - Conditional Responding is “asymptotic”
-the response approaches a maximum level that it cannot exceed, and any further repetition of the stimulus does not result in significant changes in the response. - Conditioning/Learning can occur at different rates
Delayed conditioning
- The CS begins and US overlap partially.
- The CS begins first.
- Generally the most effective method when CS-US interval is short (0.4 – 1 sec)
-CS-US interval = Time between CS onset and US onset. - Common in the real world.
(e.g. dog growling => biting (continues growling for a little bit)
details dont seem too important
Trace conditioning
- The CS begins and ends before the US.
-Generally, longer intervals between the CS and US produce weaker responding.
Caveat: Depends on the response being learned.
e.g. flash of light => thunder
Simultaneous Conditioning
- The CS and US begin and end at the same time.
- Less common in the real world.
- Less effective than Delayed and Trace conditioning.
Backwards Conditioning
- The CS follows the US.
- Not effective, but can be demonstrated in a laboratory.
Respondent Extinction:
Presenting the conditional stimulus (CS) in the absence of the unconditional stimulus (US). Results in the gradual reduction of the (CR).
Spontaneous Recovery:
An increase in the magnitude of the conditional response (CR) after respondent extinction has occurred and time has passed.
Demonstrates that extinction is not simply “forgetting” what was learned.
Respondent/Stimulus Generalization
- When an organism shows a conditioned response to values of the CS that were not trained during acquisition.
Produces a generalization gradient. (graph of tones and salivation)
Operant/Stimulus Generalization
When an organism responds to values of the discriminative stimulus that are different than the originally trained values.
Produces a generalization gradient. (graph of tones and salivation)
Respondant/Stimulus Discrimination
When values of the CS, other than what was originally trained, elicit little to no conditioned response.
Higher-Order Conditioning:
- A type of conditioning in which a neutral stimulus becomes a conditional stimulus (CS2) because of its contingent relationship with an already effective conditional stimulus (CS1).
- Also called second-order conditioning, and third order, and fourth order, and so on.
|| Getting stung by a bee and then buzzing becomes a fear
Aversion Therapy
- A therapy in which a stimulus is contingently paired with a noxious (aversive) stimulus.
- E.g. putting bad taste on nails to stop biting them
Difference between respondant and operant conditioning
When the stimulus is administered
Learning: Operant Conditioning
Operant Conditioning chamber
- Skinner box
- act as a controlled environment
- Delivers food for action
Thorndikes law of effect
behaviors that are followed by positive consequences are more likely to be repeated, while behaviors followed by negative consequences are less likely to be repeated.