Learning and Motivation Flashcards
what is learning?
An enduring change within an organism brought about by experience that makes a change in behaviour possible
What influences performance
Learning
Opportunity
Motivation
Sensory/motor capabilities
What is a reflex?
Reflexes are automatic and usually very fast
Learning is not required - innate
what are the components of a relfex?
eliciting stimuli and corresponding response
arm withdrawal
Touch an unpleasant stimulus, withdrawal
Involve very few neurons
Doesn’t even travel to brain: spinal cord
reflex arc
sensory nerves detect stimuli
motor nerves stimulate mucles
intensity must reach a certain threshold for a response to be elicited
What is an instinct?
behavioural sequence made up of units which are largely genetically determined and, as such, are typical of all members of a species
what is maturation?
changes that take place in your body and in your behaviour that are developmental
Why is walking something that is not ‘learned’?
It is more so determined by the strength of the baby’s legs and structure. As they start developing they will try out their legs.
why fatigue doesn’t indicate learning
it is a transient state of discomfort and loss of efficiency as a normal reaction to emotional strain, physical exertion, boredom, or lack of rest - it is not stable
what is habituation?
Decreased responding produced by repeated stimulation
stimulus and response specific
what is habituation not?
fatigue or sensory adaptation
what is sensitisation?
Increased responding produced by repeated stimulation
why is habituation and sensitisation important?
help us sort out what stimuli to ignore and what to respond to, help us to organise and focus our behaviour in a world of meaningless stimuli
disorders in habituation
schizophrenic people lack capacity to habituate
clinical applications of habituation
Use habituation to form diagnostic tests to diagnose mental illness before obvious symptoms arise.
why should we use animals for experiments?
inexpensive
simpler conditions
easily controlled
wider scope
what is classical conditioning?
conditioning something to evoke the same response in the absence of the original stimulus - When a conditioned stimulus (CS) is paired with an unconditioned stimulus (US), it comes to elicit a conditioned response (CR)
appetitive conditioning
Eye-blink conditioning
Food preferences
Place preference
aversive conditioning
Conditioned fear
Anticipatory nausea
Little Albert experiment
Albert was conditioned to fear certain stimulus (large sound was made when interacting with stimulus) - feared things that were associated with the stimuli (generalisation)
What is second order conditioning?
introduce another stimulus that is not directly paired with the food - becomes second-order reinforcer
How does volume affect classical conditioning?
Strength of conditioned response increases after more trials - experience associations
How does intensity affect classical conditioning?
Intensity of CS: when intensity is higher, learning is faster (time)
Intensity of US: how tasty a food is, max amount of learning (amount)
How does contiguity affect classical conditioning?
Having a short time between CS and US allows for the association and understanding of the correct behaviour
what is ISI
Inter-stimulus interval
How does contingency affect classical conditioning?
What is the probability that the US follows the CS?
What is the probability that the US occurs anyway? - we need things to occur after certain events
Extinction
Reversing the learning process - repeated CS-alone presentations following acquisition resulting in a reduction in the CR
What is classical conditioning used for?
Advertising (associations)
Removing phobias
what is instrumental conditioning?
Trial by error learning - In the presence of a discriminative stimulus (Sd), a response (R) is followed by a reinforcer (Sr) or punisher (Sav).
Thorndike’s law of effect
What a human or animal does is strongly influenced by the immediate consequences of such behaviour in the past
What is good about the Skinner box?
Automated - measures effect of reinforcement on behaviour continuously Behaviour can be continued without interruption - unlike Thorndike where he had to remove the cat from box
Free operant procedure
- Rat placed in Skinner box
- Rat makes ‘right’ response
- Rat gets food
- Repeat from 2
Skinner’s Tripartite contingency
Antecedent the stimulus controlling behaviour - discriminative stimulus (Sd)
Behaviour what is the response being reinforced?
Consequence what is the immediate outcome of a behaviour - the reinforcing stimulus (Sr)
Difference between classical and instrumental?
classical: subject has to respond to control the outcome
instrumental: subject has no control over events, but response to them with some instinctive behaviour
Shaping
introduce new behaviours outside the behavioural repertoire
Principle of successive approximation
Reinforce behaviours that are closer and closer to a target behaviour
Gradually make the conditions of reinforcement more stringent, more precise
Primary reinforcers
Intrinsically valued
High Contiguity
Contingency
Secondary reinforcers
Acquire their reinforcing properties through experience e.g., “who’s a good boy/girl??”
avoidance
prevents a stimulus
escape
removes a stimulus
punishment
decreases a behaviour
reinforcement
increase behaviour
negative
absence of stimulus
positive
presence of stimulus
If you want an animal to establish conditioned learning quickly…
use fixed ratio
If you want to train a behaviour that is steady that is longer lasting, more sustainable…
use interval schedule
ratio
number of responses till reinforcer is present