Posted on by Dr James Shea

Working memory: could it be that it’s just poor resolution rather than 4-7 items?

We’ve all had the lecture. You can only hold so many items in your working memory because there are only so many slots. It’s in the Core Content Framework (CCF) for trainee teachers. It’s in the Early Careers Framework for recently qualified teachers. And it’s in all the NPQs. If I undertake sequence of colour, number, or items of information tests on you then, after between four and seven items, depending on context, you cannot remember the sequence accurately. Here is what it says in the CCF:

And so we break down instructions into small ‘chunks’. We think about capacity all the time and use it for instructional coaching. Granularity is key. But that idea of working memory having a limit, having only so many slots, is not the only idea in psychology. There is another theory which has just as much validity as the fixed idea. An idea that suggested we could be using many more items than 4-7 in teaching and it would still work. Welcome to the world of low resolution memories…

One competing idea is that the limit on capacity is based on resource rather than a fixed number of slots. It’s nothing new – it’s been around as long as the ‘slots’ idea and instead of slots, it says that working memory is a fluid pool of resources. In other words, you can remember a few things with precision, but that when you overload working memory the result isn’t a total failure to remember additional items, but a degradation in the quality of the memory of all eight items. It’s like pouring your working memory into 8 jars instead of 7. It’s spread around more thinly. The more items, the more pixelated (to use a modern term) the memory. If you want sharp resolution, then keep the number lower, if the outline is important and you’ll be adding resolution over time then the detail isn’t so important at the start. For example, an important part of kinesiology is knowing all 206 bones in the human body. But you still start with the skeleton of all 206. You will probably then divide the skeleton up into groups of more than 4-7 bones. You add detail as you go down so that magnitudinally, the memory can zoom out and in as it is needed. In many ways, it makes good sense to start with a very poor pixelated skeleton memory and then build detail up, rather than start with small detail of 4-7 items. Having the ‘whole’ in your memory, no matter how grainy, can work well when adding detail later on and being able to construct the fine detail into the whole picture.

Where else might this begin to make sense in teaching? Well, certainly in English. One of the first things you do before teaching an extended text is to teach students the plot. If you are teaching pupils The Merchant of Venice then you teach students about the pairs of characters, the love interests, the racism, the basic plot around the borrowing of 300 ducats by Bassanio, through his friend Antonio, to pretend to be rich in order to woo Portia (Bassanio really doesn’t come out well in this play), the cross dressing and even the idea that Portia is played by a man who cross dresses back into a man to play the young lawyer. It’s a fiendish plot and one of Shakespeare’s more simple plays! But we absolutely teach the plot first using name tags, bags of gold and solid drama pedagogy. And all those items are not only more than four to seven items but the pupils won’t remember much of it…in great detail. However, as we go through the play and its key scenes, so we will add detail and so that grand plot will come together just like the skeleton with the 206 bones. Once that has happened, then our pupil can zoom in and out of the play examining themes, character evolution and key quotations at ease as they consider the play through the lens of a question. They can recall the large plot of more than 4-7 items and also add detail to each subsection of the plot. This idea is reinforced by one the earlier ideas about resolution rather than slots from this paper by Frick (1988) which found the parsing of knowledge (separating knowledge into items) did not happen as the knowledge entered working memory, but at the point of recall, something he calls the ‘process of recovery’.

Working memory is a finite resource. But rather than see it as restricted to 4-7 parsed slots, begin to see that depending on context and the pupil’s individual strength of working memory, resolution is that which is affected rather than number of items. And then, even further, start to think about delivering something that won’t be recalled immediately in fine detail. Deliver a whole worked example in its entirety first and then go through each section of the worked example in detail.

One issue for us all is why the CCF eschews this contrasting idea of resolution from its literature review. You can still overload working memory, but you are only overloading its ability to create memories with fine resolution. And then Frick would say the parsing happens on the recall, not on the initial learning so there’s further debate there.

There is clearly a place for lower resolution memories in teaching in terms of bigger and more complex sets of data. By adopting the idea of resolution you begin to work with magnitudinal ideas. You can move along the magnitudinal spectrum and allow pupils to zoom in and out of schemata seeing both overarching and complex pictures whilst they are also able to focus and recall fine parsed detail. It’s an important refinement to the idea of working memory and cognitive load and we have to, as teachers, consider how that affects the way we approach our teaching.

Copyright © Dr James Shea and Dr Gareth Bates 2023

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Dr James Shea https://twitter.com/englishspecial

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Internal School Avoidance- how pupils avoid paying attention

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In the classroom, a pupil uses attentional control to learn. They suppress their other thoughts and instead focus wholly on the thing being taught. Well, that’s the idea. Unless they don’t. And we’ve all been there. Sitting up, listening, tracking the speaker, nodding and wholly zoned out. We are as guilty as any other when it comes to not offering attentional control from time to time.

There are a variety of reasons pupils do this. Sometimes they are quite open about why they are doing it. ‘I’m tired.’, ‘It’s boring’, ‘I already know this’, ‘It’s too hard’ and ‘It’s too hot’ are all things pupils say to us. Sometimes they are discreet about it. They are are slow to get ready, slow to write, only answer questions in simple terms, make little effort in their spoken or written work. They are not paying attentional control. They can do it habitually in every lesson, or only in some lessons and indeed sometimes only for one teacher. There is a ceiling to how much behaviourist approaches to learning can improve this situation. But an issue it is. Because every educator you know will say they see this lack of attentional control on a regular basis from pre-school to post grad. And I want to personally honest here. I’ve been in meetings and talks where I am sitting up, listening, tracking the speaker, nodding and I’m actually away with the fairies. Sometimes my thoughts just go off on tangents. Sometimes I have other things on my mind. I’ve written before about anxiety and the way this affects our working memory and capacity to provide attentional control. If it affects us as adults it most certainly affects children. I have to be clear. I’m not focused on children who are trying hard to provide attentional control despite challenges. Those who have anxiety or other needs which are impairing their attentional control are not the subject of this blog. It is the many who could, but don’t. They waste time, they work slowly, they participate less than they could and they don’t focus their executive function on the learning happening.

A child not paying attention, avoids offering the attentional control required to make learning happen effectively. That avoidance can be space physical (a pre-school child might not want to move from one zone to the carpet zone), it can be subtle physical avoidance (a child might make getting ready to work take so long that the “Do Now” activity time has finished before they started) or it can be mental avoidance (they sit quietly, look at the teacher, track, nod, but make no effort to focus on the actual learning). One of these three things happen in pretty much every lesson I’ve ever observed. It’s incredibly common. However, I want to focus on attentional control avoidance because this countermands everything we are doing as teachers.

Using Baddeley’s model of working memory, the central executive brings together the visuospatial sketchpad and the phonological loop to form memories. However, this happens at a variety of levels. Imagine I am walking down the street thinking to myself. I don’t pay that much attention to the environment around me or the familiar route I am taking. However, I then get to a point where the road is closed blocking my normal route. I then need to find an alternative route in order to continue, it is the central executive that enables me to do this as it ‘switches’ attentional control. Pupils are doing similar things in lessons. They can glide through activities and teacher talk on autopilot – seemingly there, but not paying the level of attention required for strong learning.

We’ve all heard about the new focus on internal truancy. First there was external truancy where pupils skipped schools in unauthorised absences. Then we noticed they were dawdling between lessons, going to the toilets a lot – internal truancy, so we’ve cracked down on that and had numerous debates about locking toilets. But there is a swathe of pupils habitually and frequently not paying attention that are flying under the radar. They use classic avoidance strategies to appear compliant whilst keeping their learning minimised through not paying attention. It is a form of truancy that is so subtle, but it has a similar impact on lost learning. Why are we not cracking down on this as much as external or internal truancy? Because it’s really hard to force someone to pay attention if they don’t want to. It’s why a good teaching assistant is so helpful in a classroom. They can get through to the passive child and help them start to pay attention again. If they pay attention for the child that is not so good as a teaching assistant should not be doing the teaching. But they can intervene to help the child pay attention again.

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And are there answers? Well, yes.

I’ve written before about episodic curiosity. When a pupil wants to learn in your subject they apply maximum attentional control to every aspect of learning in your lesson. It absolutely supercharges their progress. You could take the same child and move them to a different teacher or school and they would still be making awesome progress due to that level of attentional control. I recall a pupil bumping along at sub 4 for all of Year 10 and at the end of the academic year they told me they wanted to be a solicitor and asked what English grade they’d need to make this dream happen (needless to say, my answer was a shock to them). What happened next astonished me. They started paying attentional control to every aspect of every English lesson. They asked for and completed extra work. In the exam they scored an 8. I can’t take credit for that learning. But it taught me about the power of having a pupil motivated to learn in my subject. It taught me about epistemic curiosity and how important that is. When I really want to learn something, I really pay attention and the same is true for pupils!

We seem to be focused on cleaning up the cognitive landscape to remove extraneous load. We are using knowledge of studies from psychology to make remembering easier. We are very focused, rightly so, on behaviour. And then we watch child after child, in lesson after lesson, not pay attentional control. And we, as teachers, see it very often. There is a ceiling to CLT in lessons and a ceiling to behaviourist approaches. Those ceilings are that a child can simply withdraw or mute their attentional control. They might as well have 60 days a year off school instead, because that is the impact on the learning of some of those with the most reduced attentional control. There are lots of answers already out there and each pupil is unique and their personal solution might be complex. But until we start focusing on this area, then we are consigning a huge amount of learning hours to the dustbin of internal school avoidance.

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Working memory of teachers – how anxiety affects quality of teaching

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We all recall our first foray into teaching as a beginning teacher. Trying to manage the technology of SIMs for the register, meeting and greeting pupils at the door, remembering which childen have specific needs, checking for uniform, managing resources – it seemed to be there were so many things to remember and undertake. And then if you had behavioural issues as well – it could easily all overwhelm you. As experienced teachers, we know that behaviour, interruptions to our classrooms, faulty equipment and so forth, can intervene and make the basic job of teaching and adaptation exceptionally hard. But have you thought about looking at this from the perspective of cognitive science? In particular the focus on working memory?

Working memory has limitations. That’s readily established. It depends on a number of contextual factors, but regardless of those variables, it’s limited. Load it up too much with extraneous load and it stops the basic intrinsic task from being undertaken so easily. We think about this all the time for our pupils, but have we thought about it from the lens of a teacher?

There’s an interesting 2019 paper from Angelidis et al., on how acute cognitive performance anxiety increases threat-interference and impairs working memory performance. It starts from a readily established academic position that we all know about: if you stress about a situational context it affects your ability to do the task. Whether it’s public speaking or playing sport – anxiety can impair the execution. What the paper then goes on to do is to measure working memory using an established psychological test. They then cultivated stress through an established psychological method (ironically, for us as teachers, the stress is created by asking participants to perform a mathematical task whilst receiving scripted negative feedback. Maths anxiety really does need more focus!). What they discovered was that loading up the stress impaired working memory. Now to be clear, the paper acknowledges that it is established academically that some stress is helpful. Too little stress and you underperform. In particular, the focus is on anxiety, not just stress. The paper concludes anxiety is counter-productive to working memory.

Starting from this premise then, you begin to reflect on what teachers use working memory for and what things might impair this capacity. This is in no way comprehensive, but let us look at some basics.

Teachers use working memory to:

1.       Teach – the things we said at the start: managing resources, organising the lesson, asking questions, developing answers and so forth.

2.       To adapt. I separate this out because it relies on constant monitoring of students, how well they are undertaking a task and then intervening and adapting. It happens constantly and continuously as a teacher ensures that adaptation takes place and a feedback rich environment is present.

3.       Recall subject knowledge from long-term memory and apply it to the lesson.

4.       Monitor and manage behaviour. Again, there is a constant focus on behaviour as the teacher scans and ensures attention (and I use that term academically, e.g. attentional control) is maximised throughout the lesson. Very quickly we can see how too much overload, anxiety-related or simple overload could overwhelm working memory here.

5.       Follow non-negotiables. There will be tasks that always have to be followed regardless of the flow of lessons and we note that this is quite the debate in educational circles where they can be seen as unnecessary or interfere with a teacher’s ability to undertake other tasks.

6.       Ensure Ofsted compliance is being followed. I don’t know any teacher who doesn’t think about Ofsted and how they might ‘view’ the things that happen in the classroom. Writing, reading, marking – and if the school is expecting an Ofsted inspection there could be anxiety pushed onto teachers from SLT.

7.       Adult on adult bullying in the school workplace. Hierarchical, horizontal – it doesn’t matter. We all know it exists and is driving teachers from the profession. Half of the stories from that Facebook group for teachers that have left or are leaving the profession cite adult on adult bullying as the cause. That this stress can then impair teacher working memory and thus ability to teach shows that we have to be very careful in this area.

7.       Thinking about the observer’s thoughts before, during and after an observation. Anxiety about an observation can affect the very thing the observer is trying to observe.

8.       Non-teaching things. Let’s be honest here. Teachers are human. They think about divorce, children, bills, cancer, family, relationships, physical and mental health and so forth. These things could be very much related to anxiety and providing what the paper calls ‘threat-interference’ to their working memory capacity.

Quite quickly, we can all see that there are multitudes of stresses and anxiety-inducing factors that could reduce the capacity of a teacher’s working memory. There are also key pinch points in the year where anxiety and stress are high – parents’ evenings or during mock exam marking season for example. All these sources of stress would then have a direct impact on the positive things that we would like teachers to spend that working memory on. But not all stress is bad remember. Reviewing children’s access to learning and introducing adaptation is a healthy stress – it requires careful monitoring and intervention. Creating a feedback rich environment is helpful, but stressful. In a good way. Thinking hard about questions and questioning takes working memory capacity. Recalling subject knowledge really does need working memory capacity and focus and is eminently helpful for the lesson. But if you are trying to cope with poor behaviour then recalling subject knowledge becomes more challenging. If you have anxiety about poor behaviour, even when the behaviour isn’t present, it still affects working memory.

If we are to keep teachers in the profession then we have to focus on the working memory of teachers, not just pupils. We need to think about tackling things like poor behaviour. We need to question ourselves about the helpfulness and accuracy of observations as well as reflect on the impact of the anxiety produced in teachers by Ofsted and even things like non-negotiables. We should be focused on ensuring that things like providing support for teachers going through challenging times with family and health are readily available. Doing things such as these can free up capacity in working memory for the things that really matter in the lesson – the teaching and the adaptation. It’s time to focus on the working memory of teachers, not just pupils.

Dr James Shea https://twitter.com/englishspecial

As part of our ongoing work we periodically undertake research into areas of neuroscience and cognitive science and their application to teaching. If you are interested in being contacted in the future with a view to being a participant, please email james.shea@beds.ac.uk to be placed on a register of interested participants. If a suitable project becomes available in the future you will be contacted and offered an ethically vetted process to give consent to participate.