Approaches - Paper 2 Flashcards
Paper 2
What is Wundt’s contribution to psychology?
First person who attempted to make psychology scientific. He set up the first lab dedicated to psychological investigations. He also published one of the first books on psychology helping to establish it as a science
What method did Wundt use?
He focused on studying the mind in more structured and scientific ways. He used the method of introspection to try and uncover what people were thinking and experiencing.
What is introspection?
A psychological method of analysing your own thoughts and feelings internally. Wundt encouraged his participants to focus on their thoughts, images and sensations in response to different stimuli or different objects. His participant’s had to self-report what they were experiencing
What are the 6 assumptions of the biological approach?
- The influence of genes on behaviour
- Genotype and phenotype
- The genetic basis of behaviour
- The influence of biological structures on behaviour
- The influence of neurochemistry of behaviour
- Evolutionary theory of behaviour
What is the influence of genes on behaviour assumption of the biological approach?
The body is made up of trillions of cells. Within most cells in the human body, is a nucleus. This contains 46 chromosomes. These are made up from DNA. The DNA on each chromosome carries the units of information called genes. Our genes interact with the environment to influence every aspect of our bodily structure and function
What is the genotype and phenotype assumption of the biological approach?
Genotype: this is an individual’s genetic make-up. This occurs at conception and provides the genetic code for how that individuals will develop. Everyone is thought to have 100,000 genes. The genotype dictates characteristics such as eye and hair colour. Each individual has a genotype that is unique to them
Phenotype: This is the product of what happens when the genotype interacts with the environment. With a physical characteristic such as height the genotype dictates the height an individual can reach but environmental factors such as nutrition will affect how likely the person is to achieve their potential height
What is the genetic basis of behaviour assumption of the biological approach?
Behavioural geneticists are interested in the degree to which psychological characteristics such as ability, personality and emotional stability are transmitted from parent to offspring. Some of the well-researched human psychological characteristics that are thought to be influenced by genes: intelligence, psychological disorders and male and female differences
What is the influence of biological structures on behaviour assumption of the biological approach?
Believes that an understanding of biological structures and their associated functions can explain psychological processes and characteristics.
Neurons: these are the basic building blocks of the nervous system. They are nerve cells which are specialised to receive, process and transmit information to other cells within the body
The CNS: Made up of the brain and spinal cord. The brain can be subdivided into many different areas and structures which are thought to be responsible for certain behaviours. The brain relies on a large number of neurotransmitters to send signals between neurons. Too much or too little can result in over or under activity in various parts of the brain, which results in changes to thinking, feelings and behaviour
The spinal cord recites and passes messages to and from the brain and connects to nerves in the peripheral nervous system
The PNS: This is made up of neurons that transmit messages or information to and from the CNS. It has two subsystems: the somatic and autonomic nervous system
Somatic nervous system: transmits information received by the senses to the central nervous system and sends messages from the CNS to the muscles
Autonomic nervous system: it is divided into the sympathetic which increases bodily activities and the parasympathetic which maintains or decreases bodily activities
What is the influence of neurochemistry on behaviour assumption of the biological approach?
Neurotransmitters: chemical messengers in the brain transmitted via cerebral fluid.
When a nerve impulse reaches the end of a neuron, a neurotransmitter is released. It travels from one neuron to the next across a synapse.
There are many different types of neurotransmitters, some trigger the receiving neuron to send an impulse, and some stop it from doing so. Those neurotransmitters that trigger nerve impulses in the receiving neuron and stimulate the brain into action are called excitatory neurotransmitters. Those that inhibit nerve impulses to calm the brain and balance mood are called inhibitory neurotransmitters.
These chemicals are seen to be very important by biological psychologists as they are thought to affect behaviour. Dopamine is an excitatory neurotransmitter that is associated with our ‘drive’ and motivation. High levels of dopamine are related to schizophrenia. Serotonin is an inhibitory transmitter, adequate amounts of which are necessary to maintain a stable mood. Low levels of serotonin are related to depression.
Hormones: hormones are biochemical substances that are produced by glands in the endocrine system. In response to a signal from the brain, hormones are secreted directly into the bloodstream by the endocrine glands, where they travel to their ‘target cells’ and exert their influence by stimulating receptors on the surface of or inside cells. Hormones are produced in large quantities but disappear very quickly. Their effects are slow in comparison with the nervous system, but very powerful.
What is the evolutionary theory of behaviour assumption of the biological approach?
The main principle of this theory is that any genetically determined behaviour that enhances an individual’s survival and reproduction will be passed on in the genes to future generations
Natural selection occurs because some genetically inherited traits give the possessor certain advantages. The possessor is more likely to survive, reproduce and pass on these genes/traits to future generations. If the individual survives but doesn’t reproduce, the traits don’t get passed onto future generations
Aggression is one behaviour that is thought to be naturally selected. Many animal species defend their territory through aggression towards their own species to protect their territory. This means they will have the resources necessary for survival, mating and care of offspring. This aggressive behaviour is then passed on in the genes to its offspring. Similarly, humans also show signs of being territorial and often resort to aggression to defend what they regard as their territory. It is argued that this aggression has been inherited genetically from our ancestors.
What is the deterministic evaluation point of the biological approach?
It is criticised for being deterministic as it sees human behaviour as being controlled by internal, biological causes meaning we have no free will. Retz et al concluded that the 5-HTTLPR gene, which controls serotonin levels is associated with violent behaviour in male criminals. This shows that the violence is a part of the criminal’s biology. This is a weakness because it has implications for the legal system and wider society. One of the rules of law is that offenders are legally and morally responsbile for their actions. If we believe the biological approach, offenders are not morally responsible or to blame as they are controlled by genes
What is the reductionist evaluation point of the biological approach?
Accused of being reductionist. It reduces all complex behaviour down to one cause e.g., the role of neurotransmitters in our brain like serotonin. It has said that low levels of serotonin can cause depression. This is a simplistic view of behaviour to think that depression can only be caused by low levels of serotonin. It ignores environmental factors or how faulty thinking could influence our behaviour
What is the evidence evaluation point of the biological approach?
Many pieces of supporting evidence. Supporting research comes from twin studies and objective studies using biological equipment such as PET scans. Research has discovered the concordance rates of depression, MZ - 49%, DZ - 17%, siblings - 9%. This is a strength because having supporting research such as this adds validity and credibility to the biological approach particularly the genetic explanation
What is the application evaluation point of the biological approach?
Strengths because biological research has led to many treatments being developed to treat psychological disorders. Research into biochemical processes in the brain has led to the development of drug treatments. Medications to treat serious mental illnesses, such as depression and SZ have been developed. Although these drugs are not effective for all patients, they have revolutionised treatment. This is a strength because it means that sufferers are able to manage their condition and live a normal life rather than being in a hospital
What is the methods evaluation point of the biological approach?
Scientific lab studies which involve scientific/biological equipment. In order to investigate the genetic and biological basis of behaviour, the biological approach makes use a range of precise and highly scientific methods which are reliable and objective. Raine et al used PET scans to compare brain activity of murderers and normal people. They found differences in areas of the brain such as the prefrontal cortex and the amygdala, regions associated with aggressive behaviour, This is a strength because by emphasising the importance of scientific processes and their reliance on the scientific method giving the biological approach greater credibility and status as a science
What are internal mental processes? (Cognitive approach)
Private operations of the mind that mediate between stimulus and response
What is a schema? (Cognitive approach)
A mental framework that influence processing which is developed from experiences
What is an inference? (Cognitive approach)
Where you draw conclusions about how mental processes operate
What is cognitive neuroscience? (Cognitive approach)
The study of biological structures
What are the assumptions of the cognitive approach?
Believe it is important to look at internal mental processes to understand behaviour, investigating memory, perception thinking, attention and language.
These mental processes are not observable, so cognitive psychologists must study them indirectly by making inferences about what is going on inside people’s minds. They do this by devising models and then testing and measuring them scientifically
Our mind works like a computer in terms of: input from our senses which it then processes and produces an output such as language or specific behaviours
How do the cognitive approach investigate perception?
Interpreting incoming sensory information
How do the cognitive approach investigate attention?
Selecting information for further processing
How do the cognitive approach investigate memory?
Recall and retain information
How do the cognitive approach investigate language?
Thoughts and feelings put into words
How do the cognitive approach investigate thinking?
Problem-solving, sorting, combining and modifying information
What are the 2 theoretical models? (Cognitive approach)
The information processing approach and the multi-store model
What are theoretical models? (Cognitive approach)
A model of something should never be taken as an exact copy of the thing being described, but rather as a representation of it. Cognitive psychologists encourage the use of theoretical models as they support a scientific approach to enquiring and testing. The use of theoretical models means that the components can be tested individually and examined in detail. If the data from these experiments doesn’t fit with the model it can be adjusted
How do cognitive psychologists understand internal mental processes?
By using theoretical and computer models
What is the difference between theoretical models and computer models?
Theoretical are abstract whereas computer are concrete things.
What is the information processing approach? (Cognitive approach - theoretical model)
Suggests information flows throguh the cognitive system in a sequence of stages
Input: comes from the environment via senses and is encoded by the individual
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Transformation: once encoded info can be processed, store and retrieved from memory
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Output: the behavioural response from the individual
What is the multi-store model? (Cognitive approach - theoretical model)
In line with the information processing approach the information flows through our memory system in a series of stages. The cognitive approach recognises that the mental processes in these models (attention, rehearsal, retrieval, encoding) cannot be observed directly and so must be studied indirectly in lab settings and then inferences are made about what is happening in the mind. This enables cognitive psychologists to develop theories about how our mental processes work
What are computer models? (Cognitive approach)
Compare the mind to a computer by suggesting there are similarities in the way information is processed. These models use the idea of the brain being the hardware and the mental processes and perception are the software. They use the concepts of ‘stores’ to hold the information and the concept of ‘coding’ to turn information into a usable format
What is artificial intelligence (Cognitive approach - computer model)
Cognitive psychologists use the computer analogy to simulate human mental abilities in AI, to perform tasks that require decision making. AI is concerned with producing machines that behave intelligently. Expert systems are programmed with a body of knowledge and then sued to deal with real world problems to replace the work of humans. The Dendral programme has been used to help chemists establish the structure of complex molecules
What are the assumptions in the cognitive approach?
Theoretical models, computer models, the role of schemas, the emergence of cognitive neuroscience
What is the role of schemas in the cognitive approach?
Schemas are packages of information, beliefs and expectations in the mind developed through experience. They act as a mental framework for the interpretation of incoming info received by the cognitive systems e.g., if you witness a crime scene your scheme will help you interpret what you have observed and hears. Your schemas that have been acquired through experience help you to respond to the object/situation appropriately. It could also affect what you recall about the situation.
As we get older, our schemas become more detailed and sophisticated. Schemas enable us to process lots of information quickly and this is useful as a sort of mental shortcut that prevents us from being overwhelmed by environmental stimuli.
However, schemas may cause errors in out processing of the sensory info that we receive. If we experience a situation or object that we don’t have a schema for we might ignore that info or misinterpret it so that it fits in with our existing schemas
What is cognitive neuroscience? (Cognitive approach)
The scientific study of the brain structures, mechanisms and brain processes that are responsible for cognitive thinking. This involves the mapping of brain areas to specific functions
What is the emergence of cognitive neuroscience in the cognitive approach?
PET and fMRI scans help psychologists to understand how areas of the brain are linked to different cognitive activities and emotions. The scans show which parts of the brain become active when someone is engaged in a cognitive task
Cognitive neuroscientists also study atypical brains. Brain injuries can be located using scans and patients are then asked to undergo cognitive tasks whilst scanning takes place. If the person with the injured brain has difficulty with the task it is inferred that the damaged part of the brain is responsible for that cognitive function. Cognitive neuroscientists study many different mental processes including brain activity linked to memory, attention and perception. They are also interested in the neuroscience of social cognition, and show abnormalities in these brain regions may be associated with psychological disorders
What are the uses of cognitive neuroscience? (Cognitive approach)
- The use of scanning and imaging techniques to locate different types of memory in different areas of the brain leading to treatment for memory problems
- The use of scanning and imaging techniques to study mental processing in patients with depression or OCD or in children with autism or dyslexia
- Use of computer simulations/computational modelling to test theories or hypotheses about mental processes such as attention, memory, problem solving etc
What is the deterministic evaluation point of the cognitive approach?
Less deterministic than other approaches and adopts a soft determinism view. It recognises that rather than being completely controlled by the environment (behaviourism) or being controlled by genes (biologically) we can make rational choices about how we behave. The approach gives a certain amount of importance to free will. This is a strength because soft determinism is a middle ground position
What is the reductionist evaluation point of the biological approach?
Accused of being reductionist. The approach reduces all complex behaviour down to once cause e.g., faulty thinking and distorted schemes. It believes depression is caused by irrational thought processes. This is a simplistic view of behaviour to think that depression can only be caused by irrational thinking. It ignores environmental impacts or how neurotransmitters may affect our behaviour
What is the evidence evaluation point of the biological approach?
There are many pieces of supporting evidence. Much comes from scientific lab studies. Johnson and Scott found in a EWT study that a weapon can less a participant’s ability to identify the person holding it. This may therefore explain why EWT sometimes have poor recall for certain details of violent crimes. This is a strength because having scientific supporting research adds validity and credibility
What is the application evaluation point of the biological approach?
It has been applied in real life. Our understanding of internal mental processes provided by this approach has led to the development of CBT which helps our understanding of fault thought processes. This is a strength because cognitive biased therapies have led to the successful treatment of people suffering from depression where faulty thinking is identified and altered.
What is the methods evaluation point of the biological approach?
Use of lab experiments in highly controlled settings which allows for reliable and objective data and allowed researchers to infer which cognitive processes are at work. The emergence of neuroscience has also enable the biological and cognitive approach to come together. This means that the study of the mind has established more of a credibility scientific basis since Wundt’s early attempts at introspection. This is a strength because it means that the study of the mind has established a credible and scientific basis
What are the 3 assumptions of the behaviourist approach?
- We are born a blank slate: all behaviour is learned and determined by interactions and experiences in our environment, therefore there is no biological influence on our behaviour
- It rejects the vagueness of introspection. Only observable behaviour is measurable scientifically and it’s only these behaviour that should be studied. Thought processes cannot be observed and so are difficult to test
- They suggest that the basic process of learning is the same for all species. It is therefore valid to study how animals learn and apply the same principles of learning to humans
Who came up with classical conditioning? (Behaviourist approach)
Pavlov
What did Pavlov investigate? (Behaviourist approach)
Classical conditioning - Behaviourists regard all behaviour as a response to a stimulus and believe that we are born with only a handful of innate responses that do not need to be learned. Most responses are learned through interacting with the environment. Classical conditioning is learning by association. They key idea is that learning occurs when 2 stimuli are repeatedly paired together (NS and UCS). An NS doesn’t cause a response. A UCS causes a natural response. After repeated pairings the NS alone will cause a reaction
What is the process of classical conditioning? (Behaviourist approach)
UCS –> UCR
UCS + NS –> UCR
CS –> CR
What other things did Pavlov find about classical conditioning? (Behaviourist approach)
Timing, stimulus generalisation and extinction
What did Pavlov find about timing? (Behaviourist approach)
Pavlov found that the association only occurs if the unconditioned stimulus and neutral stimulus are presented at the same time, or around the same time .If the time between presentations is too great, there will be no association
What did Pavlov find about stimulus generalisation? (Behaviourist approach)
Discovered that once an animal has been conditioned, they would also respond to other stimuli that are similar to the original CS
What did Pavlov find about extinction? (Behaviourist approach)
In Pavlov’s dogs if the bell (CS) is repeatedly sounded without the food, salivation (CR) slowly disappears. The behaviour is extinguished
Who investigated operant conditioning? (Behaviourist approach)
Skinner
What is operant conditioning? (Behaviourist approach)
Skinner recognises that learning can occur through the consequence of behaviour. Done through positive and negative reinforcemenet and punishment