Aproaches Flashcards
In order for psychology to be considered a science it must meet the following criteria
1- development of a theory
2- development of hypothesis
3-hypothesis testing through research methods e.g. Lab experiments
4- research which is reliable
5- findings which lead to conclusions, applications or refined theories which are tested again
What is a theory
A set of principle intended to explain something
What is hypothesis testing
A prediction base on theory
What are the assumptions of biological approach
- all behaviour has a cause , it is determined
- all that’s is pyschological , is first physical
- mental disorders should be called mental illnesses, as they are illnesses in the same way as a physical condition
- mental illness can be treated by physiologically based approaches like drugs
- animals may be studied as a means of understanding human behaviour
- human genes have evolved over millions of years to adapt behaviours to the environment , therefore mix of behaviour is genetic
What is the biological approach concerned with
How our physical structures , especially our genes and central nervous systems influence how we think and behave
What is behaviour genetics
Human characteristics such as intelligence and personality , results from our genetic makeup
How do biological psychologists investigate behaviour
- Using animals to investigate brain functions
- the study of non identical and identical human twins helps us to understand the genetic inheritance of human characteristics
- selective breeding of animals to determine which behaviours and characteristics may have a genetic basis
- scanning techniques using advanced technology such as MRI
- electrode recording f the activity of neutrons = brain functions
What is the difference between genetics and heredity
Genetics is the study of genetic make up or organism and how genes influence physical and behavioural characteristics
Heredity is the traits , characteristics and behavioural tendencies inherited from ones parents and in Turn ancestors
What is the difference between genotype and phenotype
Genotype of a person is their actual genetic makeup , represented by 23 normal pairs of chromosomes
The phenotype is the actual expression of the persons genetic makeup this includes physical appearance
What are psychological characteristics that are thought to be influenced by genes
Intelligence
Certain aspect of personality eg introvert / extrovert
Psychological disorders
Define a Neuron
The basic unit is the brain and Nervous system
Define central nervous system
The spinal cord and brain
What is the peripheral nervous system
The somatic and automatic nervous system
What is the endocrine system
Secretes hormones into the body through a number is different endocrine glands located in different parts of the body
Natural selection ensure that
Adaptive characteristics are passed on to future generations while maladaptive ines die
Darwin suggests that
Psychological characterises are a result of adapting to the changing environment , this is key to evolutionary psychology
Aggression has ben explained by what
Evolutionary psychologists as a result of evolution e.g. Defending territory , humans show this by war
What is natural selection
The process whereby organisms better adapted to their environment tend to survive and produce more offspring . The theory of its action was first fully explained by Charles Darwin. Now regarded as the main process that’s brings about evolution
Give an example of natural selection
Long and short necked giraffes
- a giraffe with a longer neck can reach food high up
- giraffe is more likely to get enough food to survive and reproduce
- giraffes offspring inherits long neck
- small Nevis die out
What is neurochemistry
Is the biochemistry of the CNS. Hormones are the chemicals which travels through the blood. However the chemicals in the brains are called Euro transmitters and these transmit through the fluid in the brain. Neurotransmitters are thought to effect behaviour. Eg high levels of the neurotransmitter dopamine are though to cause schizophrenia
Describe serotonin
Plays a role in mood, sleep , appetite. And impulses aggressive behaviour . It is associated with depression and some anxiety disorders
Some Antidepressants medication increase the availability is serotonin at the receptor sites
Describe epinephrine
Involved in energy and glucose metabolism
Too little has been associated with depression
What is key research to support that’s genes influence behaviours
Bock and goode
Describe bock and Goodes experiment
+ strengths and weeknesses
Found that when mice were reared alone they showed tendency to attack other mice when first exposed to them . They were not taught to be aggressive for example their parents didn’t show them the behaviour
This research suggests a natural or genetic tendency in relation to biological aggression
Ads -understand genetic tendency but ethically without using humans
-highly controlled so can be replicated
Disad - ethical , shouldn’t keep mice away from each other
-being able to Apple the findings from mice to humans as Brain structure is different
Strengths of the biological approach
- Supporting research for approaches such as bock and Goode adds validity to the perspective
- developed drug treatments
- it’s scientific so variable such as hormones and neurotransmitter be measured and tracked
- it can be replicated so improves reliability
- we know what predetermines behaviour meaning we are more likely to help those with abnormal behaviour
What are the weaknesses of the biological approach
- oversimplified so it prevents us from understanding the target behaviour
- it ignores life experiences and psychological factors such as thoughts and feelings
- individuals may be predisposed to certain behaviours but these behaviours may not be displayed unless they are triggered
What are the terms used in classical conditioning
Neutral stimulus Unconditional response Unconditional stimulus Conditional stimulus Conditional response
What is classical conditioning
a learning process that occurs when two stimuli are repeatedly paired
Define neutral stimulus
is a stimulus which initially produces no specific response other than focusing attention
Define unconditional stimulus
Is the one that unconditionally, naturally and automatically triggers a response
(Smell of food pavolv )
Define unconditioned response
Is an automatic reaction to something
Response to unconditioned stimulus
Define conditioned stimulus
Is a previously neutral stimulus that after becoming associated with the unconditioned stimulus eventually comes to trigger a conditioned response
Define conditioned response
Is the learned response to the previously neutral stimulus
Define behaviourism
Observing behaviours and not observing internal mental processes
Describe pavlovs experiment
He used a bell as his neutral stimulus. Whenever he have food to his dog he also rang a bell. After a number of repeated of this procedure he tries to ring the bell on its own and it caused the dog to salivate. So the dog had learnt an association between the bell and food and a new behaviour has been learnt. Because the response had been conditioned.
Neutral stimulus has become a conditioned stimulus
What experiment is classical consisting
Pavlov
What experiment is operant conditioning
Skinner
Describe skinners experiment
He used a Skinner box and placed a rat inside. There was a lever inside which once pressed food would be dispensed. The rat then continued to press the lever as it was being rewarded
What are reinforcers
Responses from the environment that increases the probability of A behaviour being repeated . They can be positive or negative
What are punishers
Responses from the environment that decreases the likelihood of a behaviour being repeated
Punishment weakens behaviour
Example of positive reinforcement
If your teacher gave you £5 each time you completed your homework you will more likely to repeat this behaviour in the future
Therefore strengthening the behaviour
Examples of negative reinforcement
A teache saying if you do not complete your home work you will have a detentions
It will strengthen the behaviour of good work so they don’t get the punishment
What is operant conditioning
A type of learning which behaviour is strengthened if followed by a reinforcer or eliminated if followed by a punisher
What are the types of reinforcement
- continuous
- fixed interval
- variable interval
- fixed ratio
- variable ratio
Describe continuous reinforcement
Reinforced every single time that a organism provides the appropriate operant response
Describe fixed interval reinforcement
Is a schedule of reinforcement where the first response is rewarded only after a specific Amount of time has elapsed
Describe variable interval reinforcement
Behaviour is being reinforced on and inconsistent schedule
Describe fixed ratio reinforcement
Where a response is reinforced only after a specific number of responses
Describe variable ratio reinforcement
Is a Schneider of reinforcement where a response is reinforced after a unpredictable number or responses
What is generalisation
Pavolv
The tendency to respond in the same way to different but similar stimulus
What is discrimination
Pavlov
When a conditioned response is made to one stimulus but not another similar stimulus
What is extinction ( Pavlov)
Is the disappearance of a previously learned behaviour when the behaviour is not reinforced
What is spontaneous recovery ( pavolov)
Is a term associated with learning and conditioning .it is the re appearance is a response that has been extinguished
What are the main assumptions with behaviourism
- we should only be concerned with observable behaviours because these are what can be scientifically measured
- behaviour is determined by our interactions with the environment and therefore behaviour is learned from experience
- it is valid to study animals as they share the same principles of learning as humans