Can the Harkness approach to delivering Maths lead to a deeper understanding?

Mrs Clare Duncan, Director of Studies at WHS @MATHS_WHS, describes the Harkness approach she observed at Wellington College and the impact that this collaborative approach has in the understanding of A Level Maths.

Named after its founder, Edward Harkness, Harkness it is a pedagogical approach that promotes collaborative thinking. Edward Harkness’ view was that learning should not be a solitary activity instead it would benefit from groups of minds joining forces to take on a challenging question or issue. What Harkness wanted was a method of schooling that would train young people not only to confer with one another to solve problems but that would give them the necessary skills for effective discussion. Harkness teaching is a philosophy that began at Philips Exeter Academy in New Hampshire in the 1930s.

Edward Harkness stated:

“What I have in mind is [a classroom] where [students] could sit around a table with a teacher who would talk with them and instruct them by a sort of tutorial or conference method, where [each student] would feel encouraged to speak up. This would be a real revolution in methods.”

This was very much what the classroom looked like when I was lucky enough to observe Maths teaching at Wellington College last term. Their newly refurbished Maths rooms had floor to ceiling whiteboards on all the walls. On entering the classroom, the students were already writing their solutions to problems that were set at preparatory work for the lesson. Whether the solution was correct or not was irrelevant, it was a focal point which allowed students to engage in discussion and offer their own views, problems and suggestions. The discussion was student led with the teacher only interjecting to reinforce a significant Maths principle or concept.  The key learning point is giving the students their own time before the lesson to get to grips with something before listening to the views of others.

The Maths teachers at Wellington College have developed their own sets of worksheets which the students complete prior to the lesson. Unlike conventional schemes of work, the worksheets follow an ‘interleaving’ approach whereby multiple topics are studied at once. Time is set aside at the start of the lesson for students to put their solutions on whiteboards, they then walk around the room comparing their solutions to those of others. Discussion follows in which students would discuss how they got to their answers and why they selected the approach they are trying to use. In convincing others that their method was correct, there was a need for them to justify mathematical concepts in a clear and articulate manner. The students sit at tables in an oval formation, they can see one another and no-one is left out of the discussion. The teacher would develop the idea further by asking questions such as ‘why did this work?’ or ‘where else could this come up?’.

The aim of Harkness teaching is to cultivate independence and allows student individual time to consume a new idea before being expected to understand it in a high-pressured classroom environment. This approach can help students of all abilities. Students who find topics hard have more time than they would have in class to think about and engage with new material and students who can move on and progress are allowed to do so too. In class, the teacher can direct questioning in such a way that all students feel valued and all are progressing towards the end objectives.  It involves interaction throughout the whole class instead of the teacher simply delivering a lecture with students listening. It was clear that the quality of the teachers questioning and ability to lead the discussion was key to the success of the lesson.

Figure 1: WHS pupils in a Maths lesson solving problems using the Harkness approach

This was certainly confirmed by my observations. The level of Maths discussed was impressive, students could not only articulate why a concept worked but suggested how it could be developed further. I was also struck by how students were openly discussing where they went wrong and what they couldn’t understand; a clear case of learning from your mistakes. Whenever possible the teaching was student led. Even when teachers were writing up the ‘exemplar’ solutions, one teacher was saying ‘Talk me through what you want me to do next’. Technology was used to support the learning with it all captured on OneNote for students to refer to later. In one lesson, a student was selected as a scribe for notes. He typed them up directly to OneNote; a great way of the majority focusing on learning yet still having notes as an aide memoir.

Although new to me, at Wimbledon we have been teaching using the Harkness approach to the Sixth Form Further Maths students for the past couple of years. Having used this approach since September it has been a delight to see how much the Year 12 Further Maths pupils have progressed. Being able to their articulate mathematical thinking in a clear and concise way is an invaluable skill and, although hesitant at first, is now demonstrated ably by all the students. The questions posed and the discussions that ensue take the students beyond the confinements of the specifications.

References
https://learning.wellingtoncollege.org.uk/harkness-teaching-and-uk-education/

Does the Harkness Method improve our understanding of Maths?

Elena and Amelia, Y12 Further Mathematicians, explore how the Harkness Method has opened up a new way of thinking about Pure Maths and how it allows them to enhance their mathematical abilities.

For Further Maths A Level, the Maths department has picked a new style of teaching: the Harkness Method. It involves learning by working through problem sets. The problems give clues as to how to get to the answer and this is better than stating the rules and giving examples; we have to work them out ourselves. These problem sets are given for homework, and then we discuss them together during the next lesson by writing the answers on the board and comparing our results with each other.

Elena:

At the beginning of term, I found it quite challenging to complete exercises without knowing what rules I was expected to apply to the problems, as each question seemed to be completely different to the one preceding it. The tasks also require us to use our previous GCSE knowledge and try to extend it ourselves through trial and error and by applying it to different situations and problems. I found it difficult to understand how to apply a method to solve different problems as previously each problem came with a defined method.

Maths diagrams As the lessons progressed, I started enjoying this method of teaching as it allowed me to understand not only how each formula and rule had come to be, but also how to derive them and prove them myself – something which I find incredibly satisfying. I also particularly like the fact that a specific problem set will test me on many topics. This means that I am constantly practising every topic and so am less likely to forget it. Also, if I get stuck, I can easily move on to the next question.

Furthermore, not only do I improve my problem-solving skills with every problem sheet I complete, I also see how the other girls in my class think about each problem and so see how each question can be approached in more than one way to get the same answer – there is no set way of thinking for a problem.

This is what I love about maths: that there are many ways of solving a problem. Overall, I have grown to like and understand how the Harkness Method aims to challenge and extend my maths skills, and how it has made me improve the way I think of maths problems.

Amelia:

When I first started the Harkness approach for Pure Maths in September, I remember feeling rather sceptical about it as it was unlike any method of learning I had encountered before. To begin with, I found it slightly challenging to answer the questions without knowing what topic they were leading to and found confusing how each sheet contained a mixture of topics.

However, I gradually began to like this as it meant I could easily move on and still complete most of the homework, something which you cannot do with the normal method of teaching. Moreover, I found it extremely beneficial to learn the different topics gradually over many lessons as I think that this improved my understanding, for example for differentiation we learnt it from first principles which gave me the opportunity to comprehend how it actually works instead of merely just remembering how to do it.

Furthermore, I think that the best part of the Harkness Method is that you are learning many topics at a time which means that you cannot forget them as compared to in the normal method which I remember finding difficult when it came to revision for GCSEs as I had forgotten the topics I learnt at the beginning of Year 10. I also began to enjoy the sheets more and more because the majority of the questions are more like problem-solving which I have always found very enjoyable and helpful as it means you have to think of what you need to use instead of the question just simply telling you.

Moreover, I very much enjoyed seeing how other people completed the questions as they would often have other methods, which I found far easier than the way I had used. The other benefit of the lesson being in more like a discussion is that it has often felt like having multiple teachers as my fellow class member have all been able to explain the topics to me. I have found this very useful as I am in a small class of only five however, I certainly think that the method would not work as well in larger classes.

Although I have found the Harkness method very good for Pure Maths, I definitely think that it would work far less well for other parts of maths such as statistics. This is because I think that statistics is more about learning rules many of which you cannot learn gradually.

Sport stars of the week

Our sport stars of the week are the WHS basketball team. After successfully competing in the Merton Borough tournament they became Borough Champions!

A huge congratulations for this achievement.

Our Basketball Team having won the Borough tournament.

Sports notices of the week 21.01.19

Morning everyone, I hope you had a lovely weekend, just a few sports notices from me.

Our rowers performed very well on Sunday at Weybridge.  There was gold in the women junior U17 doubles, gold in the U16 and silver in the U15 among other encouraging results too.

On Saturday 16 WHS netball teams played against Latymer school and won the majority of matches with a 10:6 ratio.

Our U13 gym squad came 5th out of 15 at the Surrey floor and vault competition. Congratulations to all girls who participated.

Our sports team of the week is our Basketball team as they won the Merton Borough tournament and are now Borough Champions!

I hope you all have a lovely week.

 

Inspirational Sports Woman

Inspirational sports person: Serena Williams

This week’s inspirational sports person is Serena Williams. I have chosen her because of her journey to become one of the world’s greatest tennis players. She is widely known and has worked immensely hard in order to get where she is today. She has 4 Olympic gold medals and 4 Grand Slams to her name, and won sports-person of the year by the magazine ‘Sports Illustrated’. The reason she is such an inspiration to me is because throughout her journey despite having received racism and sexism from fans and tennis administrators, she is still so strong and it takes a lot of mental strength to overcome these challenges and use them positively in order to make you, and your game stronger.

Additionally, in the recent US Open in September 2018 she called out a double-standard and challenged the way society thinks women should behave when playing sport in comparison to men. During the finals match against Osaka, Williams received a code violation for racquet abuse (hitting her racquet on the floor), but as later summarised in an interview “when a woman is emotional, she’s ‘hysterical’ and she’s penalised for it. When a man does the same, he’s ‘outspoken’ and there are no repercussions”. I think that she is an inspiration, not only to sport players but to all people out there.

Emily Ng,

Swimming rep

Welcome back!

Hi everyone,

 

I hope you all had a lovely holiday and are enjoying the first few weeks of January. In the spring term, we welcome the netball season and with multiple teams across year groups it promises to be a busy and successful season.

 

Congratulations to all girls who participated in hockey teams last season. Every player showed determination and development in their skills which was represented in the strong results we had. I hope you had some well-deserved rest over the holidays and continue playing hockey with your clubs and county ahead of next year.

 

Our rowing teams had their first training session of 2019, with excellent coaching and great teamwork they are a force to be reckoned with! We wish you lots of luck for this year and we are sure it will be an even stronger season!

 

Good luck to our basketball team who are currently competing in the Merton borough tournament.

 

Enjoy your week and well done to all the girls who took mocks after Christmas!

 

Annie Drummond,

 

Sports Captain

Does taking part in co-curricular activities really improve academic outcomes?

Jenny Cox, Director of Co-curricular and Partnerships at Wimbledon High, looks at the links between co-curricular activities and the impact these can have on academic outcomes in the classroom.

There has been much research over the years investigating the link between Sport and its benefits – not only to a healthy lifestyle – but to the academic progress of students in schools and universities.  Research has shown that regular physical activity leads to improvements in a range of cognitive functions, including information processing, attention and executive function (Chaddock et al. 2011). However, does involvement in any co-curricular club facilitate academic outcomes?

‘Flow’

Can you think of a time when you have ever been so absorbed in an activity that you have completely lost track of time? That whatever you were doing was challenging, totally captivating, was extending your skills and you were virtually operating in the subconscious? If you can, it’s likely that you were experiencing a phenomenon known as ‘flow’. Psychologist Csikszentmihalyi writing in the 1960s researched this initially with it really coming to the forefront of sports psychology in the 1990s.

He described it as:

“A deeply rewarding and optimal experience characterised

by intense focus on a specific activity

to the point of becoming totally absorbed in it”

Csikszentmihalyi suggested that experiencing ‘flow’ makes us happier and more successful, which in turn leads to increased performance. To get to this point, he pointed out that tasks have to be constantly challenging which in turn results in personal growth and development. This doesn’t mean that we always have to be in a state of optimal performance, but more that we are fully immersed in the process of the task in hand, as shown in the diagram below:

Activities & Flow diagram by Csikszentmihalyi

‘Flow’ experiences can happen as part of everyday life, and Csikszentmihalyi suggested overlearning a concept or a skill can help people experience flow. Within a sporting context, it is sometimes referred to a “being in the zone”, experiencing a loss of self-consciousness and feeling a sense of complete mastery.

Motivation

In addition to overlearning, another key component of finding ‘flow’ is doing activities that we are intrinsically motivated to take part in. This means work and activities that we feel real meaning behind and enjoy doing for the sake of doing. Financial gain, awards and praise can be by-products of the ‘flow’ activities you do, but they cannot be the core motivation behind what you’re doing. Csikszentmihalyi even goes further, saying the feeling should be “such that often the end goal is just an excuse for the process.”

Academic success

So why is this relevant to our school co-curricular programme and can it be linked to academic success?  The links here are two-fold.

Firstly, the co-curricular programme is designed to inspire and enhance the general learning of new skills and concepts. It gives us more time to focus on over-learning a skill or concept because there is no pressure of being examined, therefore no exact specification or course content to get through. We have the luxury of taking our time, over-rehearsing, over practising to a point of taking part in an activity with a loss of sub-consciousness. We may repeat skills so frequently because we revisit them two, three, four, seven, eight times a week, (think of rowing, drama, and music to name just three activities that have repeat weekly sessions), that the feeling of knowing a skill, a sequence, a technique really well and performing is sub-consciously really does happen.

Secondly, with this feeling of ‘flow’ comes those ‘magic moments’ we can all benefit from at any point during the day. The mere fact we are immersed in activity we enjoy could result in us being ‘in the zone’. We are busy immersed in something which is likely to mean we are automatically not thinking about an essay, a grade, a piece of coursework, a friendship or relationship issue at that time and so as a consequence that time contributes enormously to our state of well-being and happiness. This, in turn, is highly likely to lead to a more productive ‘head space’ for work when we return to it, less procrastinating, greater focus and possibly better outcomes.

So can we draw a link between participation in co-curricular activities and academic outcomes? There is research to indicate we can….. happy reading!

References

  • Chaddock, L., C. H. Hillman, S. M. Buck, and N. J. Cohen. 2011. “Aerobic Fitness and Executive Control of Relational Memory in Preadolescent Children.” Medicine and Science in Sports and Exercise 43 (2): 344–349.
  • Csikszentmihalyi, M. (1990). Flow: The Psychology of Optimal Experience. Harper & Row
  • Bailey R. (2016): Sport, physical activity and educational achievement – towards an explanatory model, Sport in Society

 

 

What are the links between romance languages and music?

Matilda, Year 13, investigates the links between romance languages and music to discover whether the learning of one can help in the understanding of the other.

Music and language

It is often said that music is the ‘universal language of mankind’, due to its great expressive powers which have the ability to convey sentiments and emotions.

But what are the connections between music and languages?

A romance language is a language derived from Latin and this group of languages has many similarities in both grammar and vocabulary. The 5 most widely spoken romance languages are Spanish (with 470 million speakers), Portuguese, French, Italian and Romanian.

There are 3 main connections between languages and music:

 

The first of these is the role of melody in recall:

There is a link between languages and music in remembering words. This is shown in a study where words were better recalled when learned as a song rather than a speech. This is because melody and rhythm give the memory cues to help recall information.[1]

Language, music, and emotion:

The British anthropologist and evolutionary psychologist who specialises in primate behaviour, Robin Dunbar, says that music and language help to knit people together in social groups. This is because musicians process music as a language in their heads. Studies have shown the planum temporal in the brain is active in all people whilst listening to music.

However, in non-musicians, the right-hand side was the most active, meanwhile, in musicians, the left side dominated, this is the side believed to control language processing. This shows that musicians understand music as a language in their brain.

In another study, scientists analysed the Broca’s area, which is crucial in language and music comprehension. It is also responsible for our ability to use syntax. Research has shown the in the Broca’s area of the brain, musicians have a greater volume of grey matter, suggesting that it is responsible for both speech and music comprehension.

The relationship between music and languages:

Brain and Languages Both music and languages share the same building blocks as they are compositional. By this, I mean that they are both made of small parts that are meaningless alone but when combined can create something larger and meaningful.

For example, the words ‘I’, ‘love’ and ‘you,’ do not mean much individually, however, when they are constructed in a sentence, carry a deep sentimental value. This goes the same for music notes, which when combined can create a beautiful, purposeful meaning.

Musical training has been shown to improve language skills.[2] In a study carried out in 2011, developmental psychologists in Germany conducted a study to examine the relationship between development of music and language skills. In the experiment, they separated children aged 4 into 2 groups, 1 of these groups receiving musical training, and one did not.

Later on, they measured their phonological ability (the ability to use and manipulate language) and they discovered the children who had received music lessons were better at this. Therefore, this shows that learning and understanding language can go hand in hand with musical learning and ability.

References: 

[1] See https://www.theguardian.com/teacher-network/2018/mar/14/sound-how-listening-music-hinders-learning-lessons-research
[2] See https://www.psychologytoday.com/intl/blog/the-athletes-way/201806/how-does-musical-training-improve-language-skills

Trying not to PEE on your paragraphs…

Holly Beckwith, Teacher of History and Politics at WHS, explains how the History and English departments are using a small-scale action research project to try and rethink the way in which analytical writing is taught at Key Stage 3.

The age-old question for history teachers: how do we get our pupils to produce effective written analysis? It is a question we regularly grapple with as a department. Constructing and sustaining arguments is at the centre of what we do as Historians and analytical writing is thus at the core of our teaching of the discipline. But it has not always been an easy task for history practitioners to get pupils to achieve this, even over a whole key stage.

Through published discourse, history teachers have explored the ways in which we can teach pupils to produce argued causal explanations in writing (Laffin, 2000; Hammond, 2002; Chapman, 2003; Counsell, 2004; Pate and Evans, 2007; Fordham, 2007).  Extended writing has been seen as an important pedagogical tool in developing pupils’ causal reasoning as it necessitates thinking about the organisation, arrangement and relative importance of causes.

In 2003, History teacher Mary Bakalis theorised pupils’ difficulty with writing as a difficulty with history. She posited that writing is both a form of thinking and a tool for thinking and, therefore, that historical understanding is shaped and expressed by writing. Rather than viewing writing as a skill that one acquires through history, Bakalis saw writing as part of the process of historical reasoning and thinking. Through an analysis of her own Year 7 pupils’ essays, she noticed that pupils had often failed to see the relevance of a fact in relation to a question. She realised that pupils thought that history was merely an activity of stating facts rather than using facts to construct an argument.

As a solution to similar observations in pupils’ writing, history teachers have used various forms of scaffolding to help pupils construct arguments. This includes the well-known PEE tool, which was advocated by genre theorists and cross-curricular literary initiatives as put forward by, for example, Wray and Lewis (1994), and has since been used widely in History and English departments nationwide, including ours at Wimbledon High.  The concept of PEE (point, evidence, explanation) is simple and therefore a helpful tool for teaching paragraph structure. It gives pupils security in knowing how to organise their knowledge on a page.

Figure 1: PEE – Point, Evidence, Explanation

But while PEE in theory offers a sound approach to structuring extended writing in history, it has been criticised for unintentionally removing important steps in historical thinking. Fordham, for example, noticed that the use of such devices in his practice meant that there was too much ‘emphasis on structured exposition [which] had rendered the deeper historical thinking inaccessible’ (Fordham, 2007.) Pate and Evans similarly argued that ‘historical writing is about more than structure and style; the construction of history is about the individual’s reaction to the past’ (Pate and Evans, 2007).  Therefore, too much emphasis on the construction of the essay rather than the nuances of an argument or an engagement with other arguments, as Fordham argues, can create superficial success. Further problems were identified by Foster and Gadd (2013), who theorised that generic writing frame approaches such as the PEE tool was having a detrimental effect on pupils’ understanding and deployment of historical evidence in their history writing.

After reflecting on this research conducted by History teachers as a department, we started to consider that encouraging our pupils to use structural devices to help pupils’ historical writing may not be very purposeful if divorced from getting pupils to see the function and role of arguments in the discipline of history itself. Through discussions with the English department, who have also used the PEE tool in their teaching, we realised we shared similar concerns.

Not satisfied with simply holding these, we decided to do something about it and have since embarked on a piece of action research with the English department.  Action research is interested in finding solutions to problems to produce better outcomes in education and involves a continual cycle of planning, action, observation and reflection such as Figure 2 below illustrates.

We started our first cycle of our piece of small-scale research last term teaching analytical writing to classes using two different lesson sequences: one which teaches pupils PEE and one which omits this.

We then compared the writing produced by these classes to identify any noticeable differences and structured our reflections around four questions:

1.      How has the experience of teaching and learning been different to previous experience, and why?

2.      How have students responded to the new method?

3.      How far has the intervention resulted in a different approach to analytical writing so far?
4.      What are our next steps – what went well, and what needs adjusting?

Figure 2: The action research spiral (Wilson, 2017, p. 113)

Thus far, the comparisons have allowed us to make some tentative observations. Whilst these do not seem to show an established pattern yet, there does seem to be a greater sense of originality and creativity in some of the non-PEE responses. Pupils seemed to produce more free-flowing ideas and were making more spontaneous links between those ideas, showing a higher quality of thinking. In addition, a few of the participating teachers noticed that their questioning became more tailored to developing the ideas and thinking of the pupils they taught rather than getting them to write something particular. However, others noticed that pupils were already well versed in PEE and so the change in approach may have had less of an effect. Other pupils seemed to feel less secure with a freeform structure. In order to encourage the more positive effects, our next cycle of teaching will experiment with different ways of planning essays that provide pupils with a way of organising ideas more visually and focus on the development of our questioning to further develop the higher quality thinking we noticed with some classes.

The first research cycle has thus been a worthwhile collaborative reflection on our teaching practice in the pursuit of improving our pupils’ historical and literary analysis. It has given us some insights which we’re looking to develop further as we head into the second term of the academic year.

References

Bakalis, M. (2003). ‘Direct teaching of paragraph cohesion’ Teaching History 110.
Chapman, A. (2003). ‘Camels, diamonds and counterfactuals: a model for teaching causal reasoning’ Teaching History 112.
Counsell, C. (2004). History and Literacy in Year 7: Building the lesson around the text. Abingdon: Hodder Education.
Fordham, M. (2007). ‘Slaying dragons and sorcerers in Year 12: in search of historical argument’ Teaching History 129.
Foster, R. and Gadd, S. (2013). ‘“Let’s play Supermarket ‘Evidential’ Sweep”: developing students’ awareness of the need to select evidence’ Teaching History 152.
Hammond, K. (2002). ‘Getting year 10 to understand the value of precise factual knowledge’ Teaching History 109.
Laffin, D. (2000). ‘My essays could go on for ever: using Key Stage 3 to improve performance at GCSE’ Teaching History 99.
Pate, J. and Evans, G. (2007). ‘Does scaffolding make them fall? Reflecting on strategies for causal argument in Years 8 and 11’ Teaching History 128.
Wray, D. and Lewis, M. (1994). Working with Writing Frames: Developing Children’s Non-Fiction Writing Scholastic.

The Brain Chemistry of Eating Disorders

Jo, Year 13, explores what is happening chemically inside the brains of those suffering from eating disorders and shows how important this science is to understanding these mental health conditions.

The definition of an eating disorder is any range of psychological disorders characterised by abnormal or disturbed eating habits. Anorexia is defined as a lack or loss of appetite for food and an emotional disorder characterised by an obsessive desire to lose weight by refusing to eat. Bulimia is defined as an emotional disorder characterised by a distorted body image and an obsessive desire to lose weight, in which bouts of extreme overeating are followed by fasting, self-induced vomiting or purging. Anorexia and bulimia are often chronic and relapsing disorders and anorexia has the highest death rate of any psychiatric disorder. Individuals with anorexia and bulimia are consistently characterised by perfectionism, obsessive-compulsiveness, and dysphoric mood.

Dopamine and serotonin function are integral to both of these conditions; how does brain chemistry enable us to understand what causes anorexia and bulimia?

Dopamine

Dopamine is a compound present in the body as a neurotransmitter and is primarily responsible for pleasure and reward and in turn influences our motivation and attention. It has been implicated in the symptom pattern of individuals with anorexia, specifically related to the mechanisms of reinforcement and reward in engaging in anorexic behaviours, such as restricting food intake. Dysfunction of the dopamine system contributes to characteristic traits and behaviours of individuals with anorexia which includes compulsive exercise and pursuit of weight loss.

In people suffering from anorexia dopamine levels are stimulated by restricting to the point of starving. People feel ‘rewarded’ by severely reducing their calorie intake and in the early stages of anorexia the more dopamine that is released the more rewarded they feel and the more reinforced restricting behaviour becomes. Bulimia involves dopamine serving as the ‘reward’ and ‘feel good’ chemical released in the brain when overeating. Dopamine ‘rushes’ affect people with anorexia and bulimia, but for people with anorexia starving releases dopamine, whereas for people with bulimia binge eating releases dopamine.

Serotonin

Serotonin is responsible for feelings of happiness and calm – too much serotonin can produce anxiety, while too-little may result in feelings of sadness and depression. Evidence suggests that altered brain serotonin function contributes to dysregulation of appetite, mood, and impulse control in anorexia and bulimia. High levels of serotonin may result in heightened satiety, which means it is easier to feel full. Starvation and extreme weight loss decrease levels of serotonin in the brain. This results in temporary alleviation from negative feelings and emotional disturbance which reinforces anorexic symptoms.

Tryptophan is an essential amino acid found in the diet and is the precursor of serotonin, which means that it is the molecule required to make serotonin. Theoretically, binging behaviour is consistent with reduced serotonin function while anorexia is consistent with increased serotonin activity. So decreased tryptophan levels in the brain, and therefore decreased serotonin, increases bulimic urges.

Conclusions

Distorted body image is another key concept to understand when discussing eating disorders. The area of the brain known as the insula is important for appetite regulation and also interceptive awareness, which is the ability to perceive signals from the body like touch, pain, and hunger. Chemical dysfunction in the insula, a structure in the brain that integrates the mind and body, may lead to distorted body image, which is a key feature of anorexia. Some research suggests that some of the problems people with anorexia have regarding body image distortion can be related to alterations of interceptive awareness. This could explain why a person recovering from anorexia can draw a self-portrait of their body image that is typically 3x its actual size. Prolonged untreated symptoms appear to reinforce the chemical and structural abnormalities in the brains seen in those diagnosed with anorexia and bulimia.

Therefore, in order to not only understand and but also treat both anorexia and bulimia, it is central to look at the brain chemistry behind these disorders in order to better understand how to go about successfully treating them.