Flashcards in Lecture 3: Role Of Descriminative Stimulus Deck (26):
Responding acquired with positive reinforcement persists when non-reinforced to a greater extent than a conditional reinforcement. The less reliably a response is reinforced, the more persistent it is during extinction. The participants that leaves the earliest are the one being reinforced.
Partial reinforcement extinction effect
You talk louder than normal
E.g autism intervention training.
Rft is removed. established response declines. Seen in both instrumental and classical conditioning. Omission works the same.
What does CRF vs extinction serves as?
What is facilitated by the different contexts?
What are the evidence for the original association re-emerges under some circumstances?
1. Spontaneous recovery
3. Rapid re-acquisition
What plays a critical role in extinction
What controls behavior
How is stimulus control acquired?
Through differential reinforcement
What happens if RFT is delivered in the presence if a stimulus (s+)?
Learning tends to generalize to similar stimuli. i.e. Generalization gradient
What does discriminating between stimuli mean?
Behaving differently towards them
When is discrimination applicable
1. The stimuli are easy to tell apart (colour)
2. The stimuli are confusable (the difference between then is not obvious)
When would generalization fail to discriminate?
1. Organism cannot discriminate
2. Organism doesn't discriminate
How can discrimination be learned?
What is critical for generalization and discrimination in similar situations?
The content of what is learned
What is the evidence of learning the relationship between two stimuli
What are the 2 theories of Spence?
1. Excitatory conditioning to S+
2. Inhibitory conditioning to S-
What generalizes S+ to similar values
What generalizes S- to similar values?
What conditioning explains transposition?
Feature based conditioning
What theory predicts that rational choices will have cleat physical limitations?
Spence's theory; gradient summation theory of discriminative learning
What can animals learn to discriminate?
Complex stimuli; discrimination and categorization
What is a prototype?
A representation of the typical category member
What features are most strongly reinforced that becomes the best discriminative stimuli?
The most common features
- Reinforcement is removed
- established response is declined
- seen in both instrumental and classical conditioning
- omission works the same