Asd Flashcards
What are the characteristics of ASD?
-ASD is a lifelong developmental disorder which begins in childhood, it is a spectrum disorder, it was revised and became a spectrum diagnosis in 2013. The characteristics of this are:
—social communication characteristics:
-people with ASD, we struggle with both verbal and verbal communication, for example:
-they may struggle with social-emotional reciprocity, for example, they may struggle to maintain the flow of conversation, As a conversation would usually be one-sided.
-people with ASD also struggle with non-verbal interaction, for example, the use of facial expressions rarely, inappropriately pointing, nodding, etc out of context, understanding of personal space may be an issue
-as well as this people with ASD may struggle to the world from somebody else’s perspective. This means that they are unaware of rules in social situations.
-The second category behaviour would be repetitive behaviour and interest:
-this could be repeating what they have just said, repeating hand gestures or movements,
-they may be inflexible to change regarding any set routines they have
-they may overreact to changes in a routine
—as well as this people with ASD would have unusual reactions to sensory input:
-they meet may be adversive to touch,
-They may be distressed out, unusual or loud noises
Describe the explanation of amygdala dysfunction
(5/ 10 mark)
-bio
-ASD
-The amygdala is a part of the limbic system, which is responsible for fear and emotion processing as well as moral development. They make the host strong connections with the prefrontal context, hippocampus, thalamus, etc.
-It is believed that an impaired growth in the amygdala can be a reason for ASD. For example, from the age of two, there is a larger growth than normal in amygdala volume, in children with ASD by around 6 to 9%
-however, by the time they reach Adulthood there is no difference in amygdala volume in those with of ASD and normal people.
-it is believed that as the amygdala, has many connections with the frontal cortex, the abnormal development of the amygdala, cause social, behavioural defects. This is because the amygdala has grown too quickly, meaning it has unstable connections to the other brain regions.
For 10 marks
-from this Baron Cohen conducted study:
-adults with ASD will matched with a control group of adults without ASD,
The participants with them presented with photographs that only showed the eye area of people making different facial expressions. The two groups were then asked to identify the expression shown their brain activity was then measured using an MRI scanner during the task.
-it was found that those with ASD performed significantly worse on the eye task, then controls. MRI scans showed that the left Amygdala was not activated in ASD Participants at all, but was strongly activated in the controls.
-this shows how the left amygdala is involved when we infer emotion, and this function is impaired in people with ASD
Evaluate the strengths of explanation of amygdala dysfunction for ASD
-bio
-One strength—> supporting evidence
-for example, Baron Cohen conducted a study using two groups of adults: one group of adults had ASD and the other group was a control group matched off this. The participants were presented with photos that showed the eye of somebody making a facial expression, they were then asked to identify the expression shown , while their brain activity was monitored by an MRI scanner.
It was found that those with ASD performed significantly worse on the eye task, and the MRI scans showed that there left amygdala was not activated, compared to the controls who had a strongly activated left amygdala.
C- however “ eyes” are subjective to each individual and may be down to other factors, other than ASD, such as schemas, and our past experiences
L-therefore, although there is supporting evidence for the amygdala dysfunction theory, facial expressions and photos of eyes are subjective, leading us to question the accuracy of the results of the study.
-strength—> deterministic
-for example, the development of ASD, is determined by the abnormal growth of the amygdala. This would make it easier to predict the diagnosis of ASD, and earlier intervention could be given, if a brain scan reveals that there is overdeveloped.
C- however, a deterministic viewpoint may lead to an individual/ family to feel powerless and out of control as if ASD is caused by the overdevelopment of the amygdala, then there is a little you can do to prevent this
-therefore, although it makes it easier to predict the onset of ASD, it also can lead people feeling powerless in the situation.
Evaluate the weaknesses of explanation of amygdala dysfunction for ASD
-bio
-one weakness—> can’t explain all characteristics.
-for example, the explanation can only explain issues with social communication, but cannot explain the routine/ritual characteristics.
-For example the overdevelopment of the amygdala, leading poor connections with the frontal lobe, can explain symptoms such as struggling with non-verbal, social cues and the social communication characteristics, cannot explain the other symptoms
-therefore it can be criticised as it doesn’t help or understand the complexity of ASD, also if a study can’t explain or characteristics of disorder, then it can be seen as unreliable and incomplete
What is a method of modifying amygdala dysfunction
ASD
5 mark
-oxytocin can be used to treat amygdala dysfunction.
-for example, if research suggests dysfunction is a cause of ASD behaviours related to the social communication issues of ASD, then improving the function of the amygdala may help to reduce these behaviours.
-for example, internasal oxytocin has been found to enter the brain effectively to work to increase oxytocin levels in areas like the limbic system, where the amygdala is located, to help improve the function of the Amygdala.
Describe the explanation of genes
(5 mark)
-bio
-ASD
-one biological explanation of ASD, would be the genetic explanation, this means that the development of ASD may be down to a genetic predisposition, which is passed down.
-An example of this would be twin studies: a study was conducted by Bailey, who found that the concordance rates for MZ (identical) was 60%, and for DZ twins was 0%. However, when he widened the defection from an ASD diagnosis, to ASD characteristics, he found a 92% concordance rate for MZ twins and the 10% concordance rate for DZ.
-also, another explanation for the genetic predisposition of ASD would be simplex (a family with only one member with ASD) v multiplex families (multiple members of the family with ASD). This shows that in multiPlex families, ASD is likely to be down to a genetic variation that is inherited, compared to simplex families, where ASD is likely to be caused by the Novo mutation (a genetic mutation occurring in fertilisation).
Evaluate the strengths of the genetic explanation for ASD
-bio
+ uses objective falsifiable methods (gene mapping) getting quantitative data (concordance) easier to analyse and interpret –
strong validity
+ supporting evidence, Bailey, who found that the concordance rates for MZ (identical) was 60%, and for DZ twins was 0%. However, when he widened the defection from an ASD diagnosis, to ASD characteristics, he found a 92% concordance rate for MZ twins and the 10% concordance rate for DZ.
Evaluate the weaknesses of the genetic explanation for ASD
-bio
Describe the explanation of theory of mind for ASD
(10 mark)
-individual differences
-theory of mind is based on cognitive principles, and means having an understanding that other peoples thoughts, emotions, beliefs, etc. Differ from our own.
-Baron Cohen suggested that children with ASD have an impaired or defects in theory of mind. He suggested that to develop a theory of mind children must engage in pretend to play, copy others and follow gaze, as a child will develop an understanding of others through doing these. However, children with ASD due to social communication issues struggle with these tasks, showing how they have defects regarding theory of mind.
-from this Baron Cohen developed the sally- Anne task to see the difference in theory of mind in children:
The children are told that:
-Sally, puts the ball in the basket in front of Anne.
-Anne then leave the room
-whilst Anne has left the room, Sally moves the ball from the basket to the box.
-anne then comes back into the room
-The child is then asked where will Anne look for the ball. A child with ASD will say the box as they are answering from their own perspective.
This was conducted in a study, and the results were as followed:
-20% of children with ASD, said the basket (correct)
-86% of children were down syndrome said the basket
-85% of, neurotypical children, said the basket
-this shows how the children with ASD were more likely to answer with the box as they are answering from their own perspective, not Annes perspective.
Evaluate the strengths of theory of mind explanation of ASD
-individual differences
-strength—supporting evidence
-for example, baron Cohen developed the sally-Anne task. This consisted of 3 groups of children (neurotypical, children, children of ASD, and children with Down syndrome) who were told:
-Sally, puts the ball in the basket in front of Anne.
-Anne then leave the room
-whilst Anne has left the room, Sally moves the ball from the basket to the box.
-anne then comes back into the room
-The child is then asked where will Anne look for the ball.
—the findings where that 20% of children with ASD, answered correctly by saying the basket, 86% of the children who had down syndrome answered with the basket and 85% of Neurotypical. Children answered with the basket.
-this is a strength as it provides supporting evidence for the theory of mind explanation, improving the validity of the explanation
Evaluate the weaknesses of theory of mind explanation of ASD
-individual differences
-weakness- theory of mind doesn’t explain all characteristics of ASD
-for example, theory of mind can explain the social-communication impairments. As the children don’t understand that thoughts and feelings can differ from their own, meaning that they may not have a good understanding of other people, leading to the social communication defects.
-however, this doesn’t explain the routine or ritual characteristics which some people with ASD experience.
-this shows how the Theory of mind explanation, maybe unsuitable as it doesn’t provide a complete explanation, so therefore can be seen as incomplete, reducing the overall reliability of the explanation.
-weakness— not all people with ASD experience defects in theory of mind.
-for example, theory of mine has been tested for over many years with some studies, not supporting Baron Cohens original findings.
-For example, prior found that children with ASD could actually complete the false believe task successfully. As well as this on Baron Cohens sally-Anne test 20% of children with ASD passed.
-leads us to question the validity of the explanation if not all children with ASD, struggle with theory of mind,
How does a method of modifying apply to the theory of mind explanation
-5 mark
-individual differences
-RDI, can be a method of modifying for the theory of mind explanation.
-for example, if research suggests defects, in theory of mind is a cause of ASD behaviours like problems with social and communication, then improving theory of mind should reduce these behaviours.
-RDI is a form of CBT and works on the concept of building dynamic intelligence, this is your ability to think flexibly, and understand events from other peoples points of view.
-One area of RDI is emotional referencing, this is where the child’s verbal or non-verbal communication is worked on to help them, understand how others feel and communicate how they feel.
Explain the weak central coherence explanation of ASD
(5mark)
-individual differences
-The weak central coherence explanation of ASD suggests that children with ASD have a local processing preference (This means that they focus more on smaller details). It is also suggested that children of ASD have issues with global processing aswell (have troubles with seeing the wider picture).
-for example Saha and frith conducted a study on weak central coherence from this:
They used, 20 young people with ASD, 13 young people who have learning difficulties, 17 typically developing young people and 16 typically developing children. All of the participants were then shown two dimensional patterns on a card. The participants had to construct the same patterns using smaller individual blocks, there were 40 designs in total.
It was found that the young people have ASD performed better at the task than the other groups, this is because they are better at local processing and task like this require a local processing preference. This shows how they have a weak central coherence as the study requires and have a stronger local processing.
Evaluate the strengths of the weak central coherence explanation of ASD
-individual differences
-strength— provides a positive explanation of ASD
-for example, the preference for local processing is not necessarily a defect or a bad thing as it can become to be beneficial.
-For example, those of ASD tend to excel in detailed orientated tasks, such as electronics or design, compared to individuals who may have a preference for global processing.
-therefore, weak central coherence is presenting positivity for ASD and reducing stigma around the disorders, compare to other explanations, such as theory of mind.
-strength— supporting evidence
-for example, shaua and frith, tested week central coherence, on four groups of people: 20 young people with ASD, 13 young people who have learning difficulties, 17 normally developing young people and 16 normally developing children. All of the groups were shown at two dimensional pattern, they then had to construct the same pattern using smaller blocks, with shapes on the blocks.
-it was found that the people with ASD performed better than the other groups suggesting that they had a
preference for local processing showing week central coherence
-this increases the validity of the approach as our support and evidence to show how weak central coherence affects people with ASD.
Evaluate the weaknesses of the weak central coherence explanation of ASD
-individual differences
-one weakness—> it is unclear on the origins of the local processing preference
-for example, we know that people with ASD have weak central coherence with a preference for local processing, but we do not know where this preference has come from or how this leads to the development of ASD.
-For example, in the explanation of weak central coherence, there are no statements to suggest where the preference comes from or what is caused this, it is suggested that it comes from abnormalities in the right hemisphere. However, there is no proof
-therefore this shows how the explanation lacks validity