ch 12-15 Flashcards
define classical conditioning
is a form of learning in which a previously neutral stimulus comes to elicit a reflexive response by repeated association with a stimulus that automatically elicits the reflex response.
what was the NS, UCS, CS, UCR and the CR in pavlov’s study?
NS- bell UCS- food CS- bell UCR- salivation due to food CR- salivation due to the bell
when may extinction occur in classical condition?
this will occur when the conditioned stimulus is presented yet it is not paired with the unconditioned stimulus for a number of times
define spontaneous recovery?
it refers to the re-emergence of a previously extinguished conditioned response after a delay.
explain graduated exposure and how it removes a fear response?
Graduated exposure involves The client working through a hierarchy with the lowest being a small anxiety provoking stimulus (cartoon picture) with the highest being a large anxiety provoking stimulus ( the actual object). the client learns to remain relaxed while they go through each stage on the hierarchy. This is repeated until the person can imagine each situation or object with little or no anxiety/fear. Essentially, the objective of graduated exposure (systematic desensitisation) is simple: to recondition people so that the feared object, animal or situation (the conditioned stimulus) elicits relaxation or a neutral response rather than fear or anxiety.
explain flooding and how it removes a fear response?
Flooding, sometimes known as exposure therapy, is a behavioural psychotherapy where patients are actually exposed at once and for prolonged periods to the feared stimulus. Patients are subjected to high levels of anxiety that they seek to replace with feelings of relaxation.
explain aversion therapy and how it removes a fear response?
aversion therapy is usually used for people with an unwanted behaviour, and it removes this behaviour by associating it with an unpleasant event or stimulus
eg bitter nail polish is put on finger nails to give the person a horrible taste when they bite their nails.
what were the ethical principles involves in john b watson’s little albert study?
Do no harm. Psychologists have to reduce or eliminate the potential that taking part in a study may cause harm to a participant during and afterwards. Little Albert was harmed during and would potentially have suffered life-long harm as a result.
The participants’ right to withdraw. you have to be given the right that you can withdraw at any stage during the study without consequence to you. Albert and his mother were given no-such rights.
The principle of informed consent. Subjects have to be given as much information about the study as possible before the study begins so that they can make a decision about participating based on knowledge. If the research is such that giving information before the study may affect the outcome then an alternative is a thorough debrief at its conclusion. Neither of these conditions was satisfied by Watson’s treatment of Albert.
define learning
this refers to a relatively permanent change in behaviour that occurs as a result of experience.
name and describe some of the behaviours we may learn not through experience?
reflex action- an inborn and automatic reaction to a specific stimuli
eg withdrawing your hand from a hot surface
fixed action patters- every member of a species displays instinctive and permanent behaviour from birth
eg spider spinning web
behaviour dependent on maturation: behaviour that can only be displayed by an organism when it reaches the appropriate stage of its physical and genetically programmed development
eg toddler walking, may know how to walk before but does not have the physical capabilities
what happens to neural pathways when learning occurs?
new neural connections are formed and existing ones are strengthened
what is the difference between synapgenesis and synaptic pruning?
synapgenises is when experience causes physical changes in the brain through the formation of new synapses. whereas synaptic pruning is where experience results in the elimination if synaptic connections that are not used
what neurotransmitter is released during learning?
glutamate
what is plasticity?
this refers to the way the brain changes in response from stimulation from the environment
what are the types of plasticity?
developmental and adaptive
what is the process in developmental plasticity?
proliferation - this is where foetal neurons divide and multiply (250000 cells a minute)
migration- where these neurons move to their relevant location in the brain.
circuit formation- when axons of new neurons grow out of target cells and form synapses with them
circuit pruning- involves the elimination of excess neurons and synapses, that have not established a connection with a target cell.
myelination- where axons of the neurons become covered by myelin.
explain adaptive plasticity
this is the ability of change, adapt and grow throughout life which involves the function of damaged brain areas ti be relocated and reassigned to other areas of the brain.