Transcript
Professor Richard Meiser-Stedman Hello, and my name’s Richard Meiser-Stedman. I’m a Professor of Clinical Psychology at the University of East Anglia. I’m going to be giving you a talk on how children make sense of trauma. So, particularly, how do children’s psychological coping mechanisms affect how they respond to traumatic experiences? And how that might affect whether or not they develop PTSD.
So, a little bit of an outline of what I’m going to be talking about. So, really focusing on PTSD primarily in this talk, and something called the “cognitive model of PTSD.” So, this explain – this is – attempts to explain how cognitive psychological processes affect how people respond to trauma. A little bit on family influences, a little bit on evidence from clinical trials and treatment studies and also, just thinking a little bit at the end about PTSD versus depression. So, how do these sorts of factors affect depression as well as PTSD? So, those are the things we’re going to be thinking about.
First off, well, what is PTSD? So, I’m just going to go with the ICD-11 definition. So, to get a diagnosis of PTSD you need to have been involved in some kind of trauma, which ICD classes as “an extremely threatening or horrific event, or events.” And you need at least one of the following symptoms. So, some kind of ‘re-experiencing’, some kind of ‘avoidance’ and some kind of ongoing, sort of, sense of ‘current threat’. And I’ve just listed the symptoms here. These are fairly well-known, so I’m not going to dwell on these too much. Keeping with ICD-11 is that these also have to cause some sort of ‘impairment’. They have to, kind of, interrupt your functioning.
So, where are we with children? So, we know that children do get exposed to trauma. This is the horrible reality. Several studies here, the E-Risk Study of – a large twin study, suggested that nearly – well, over 30% of children by the age of 18 will have been involved in a trauma and a lot of children in the UK will grow up ex – being exposed to severe domestic violence. In Switzerland, another high-income country, over half of children, according to one survey by Markus Landolt, over half will have been involved in some kind of trauma by age of 16. So, trauma is common and is something we need to take seriously.
The slightly better news is that not everyone involved in a traumatic experience get – develops PTSD. So, one study by Eva Alisic a few years suggested that about 16%, give or take, of children who’ve been involved in a trauma develop PTSD. More so for interpersonal traumas, violence, war and so on, compared to non-interpersonal trauma, so car accidents, earthquakes, things like that. Typically, more girls than boys. So, that’s the, sort of, good news.
What about – it’s not the case that everyone – every child being – getting involved in a trauma develops PTSD, but it’s still an issue at prop – at, kind of, a population level. So, again, that Swiss study suggested about 4% of children, when they were about 16, had PTSD at that moment in time. So, it’s a common enough condition and the E-Risk Study suggested a lifetime prevalence. So, having had PTSD at some point in their life, for these 18-year-olds, was about 7.8%, give or take. So, this is a common enough outcome. We do need to take it seriously.
Very important to understand what happens to PTSD naturally, though. So, this very important meta-analysis from Rachel Hiller clarified that in general, what we see is nat – some natural recovering. So, she and her team pulled together data from lots of different studies and what she found – these are studies of children who’d typically been involved in a one-off traumas, so like car crashes, assaults, medical emergencies, things like that. And what she found was that in the first month, the, sort of, average proportion of children developing PTSD would be about just over 20%. And as you can see, with each timepoint following up, so at three months, six months, 12 months, the rates of PTSD decline, and it seems to be settling down by six months and certainly a year.
So, we’ve actually got two questions. So, first of all, why is it that some children experience the onset of PTSD and others don’t? But then, why is it that some children get better and others don’t? And this is really important. So, some PTSD early on is fairly natural and even the children who didn’t get full-blown PTSD, may well have had some symptoms of PTSD. But if you do nothing, some of those children and young people will get better on their own. And so, it’s – that’s – this is part of the complexity of children’s responses to trauma that we really need to explain and understand.
Now, the model that I and my colleagues have really explored quite a lot in our work in this area is the cognitive model of Anke Ehlers and David Clark. It’s a wonderful paper, it’s in – published in Behaviour Research and Therapy in – back in 2000 and it’s a, sort of, classic PTSD article and their model is a classic. There’s a lot I could say on it. I’ll just emphasise the three main features. So, they would – their model suggests that it’s the nature of the – or PTSD becomes persistent when people’s memories of the trauma are, kind of, stored in a different way. So, these are very fragmented, often lacking some sort of context, some sort of time and place. These can be very overwhelming, very sensory laden, very affect laden, lots of emotion in there. So, the nature of the memories is different in people with PTSD from people who’ve been involved in a trauma who don’t have PTSD.
Another critical process is the – how people perceive and appraise their trauma. So, having lots of negative appraisals around the trauma, you know, why – you know, you’re thinking that maybe your symptoms of PTSD are a sign you’re going mad or a sign that you’re – that this is a – having been involved in this trauma means that you’re somehow damaged or cursed, or you can’t trust anyone. The world’s unsafe. Perhaps you see yourself as being, sort of, unable to cope and weak. These sorts of appraisals, these sorts of beliefs, seem to be really important in driving PTSD, according to this model, and then how you try to cope with and respond to the trauma and the aftermath is really important, as well.
So, avoi – sort of, thought suppression and other forms of avoidance is very powerful at maintaining PTSD, according to this account. But also, kind of, overthinking a trauma and asking, sort of, lots of open-ended questions. So, this is – sort of, a trauma-related rumination might be very important. So, you know, “Why me? What did I do to deserve this?” Sort of, repeatedly thinking, “Well, what could I have done differently?” There might be other things, as well, sort of, certain safety seeking behaviours. So, always carrying a phone with you, always checking where loved ones are, things like this, may well play a role in keeping PTSD going. So, very much worth looking at more, but that’s the basic summary of that account.
So, we, first off, explored this model in children in South London. Now, our first study was of ten to 16-year-olds who had been involved in assaults or car crashes, and we recruited 100 of these. We saw them at two weeks and then again, at six months. Demographic factors were, basically, unrelated to whether or not children develop PTSD. So, the same was true for how badly injured the child was. That didn’t really predict PTSD at all. So, some children would walk out of the A&E a couple of hours after their attendance. Other children might get admitted. Didn’t really seem to predict whether or not they got PTSD. What we saw was the same pattern that Rachel Hiller’s work showed earlier. A minority of children might get PTSD in the first couple of weeks, but there’s quite a lot of natural recovery. When we saw these children at the six-month point, a lot of children had lost their PTSD diagnosis and were doing much better.
So, what about these cognitive processes? So, certainly, what we found was that your – the, sort of, subjective severity for that individual child or young person was much more important than the objective severity. So, thinking that you were going to die, saying you were really scared during the trauma, this was strongly associated with PTSD, much more so than the objective severity. We also asked these children to give us an idea of what their memories were like. So, here’s – this is – so, we developed a questionnaire for this study called the “Trauma Memory Quality Questionnaire,” and this is free to use. Here’s some example items. So, just captures how, sort of, sensory-based these memories are, how overwhelming and how vivid the memories are and often, how difficult it is to put into words.
And again, we showed a strong relationship between – very strong relationship between scores in this questionnaire, so of having these, sort of, very different memories and both the early PTSD symptoms, so at, sort of, about two to four weeks, and there was a strong relationship with PTSD at six months, as well. So, this was encouraging, that the model is important. We also developed a mod – a questionnaire measure of how children saw themselves in the world after this trauma.
And so, we developed a scale, we worked with some Australian colleagues to develop this. We developed the Child Post Traumatic Cognitions Inventory, which again, is free to use, and this has got two subscales. So, a, sort of, sense of fragility and vulnerability, so “Anyone could hurt me. Bad things could always happen,” is one subscale. The other important subscales is permanent and disturbing change. So, this is your reactions to the trauma – the child’s reactions to the trauma are a sign that something’s really gone wrong now and they’re not going to be a normal person again, their life is over, they’re damaged in some way. And there’s lots of translations of this, as well. You can download these from the Children and War Foundation website.
So, what did we find when we looked at this measure in children? So, very strong relationship with PTSD at six months. Ver – much greater endorsement of these sorts of appraisals, these sorts of beliefs, in children with PTSD compared to children who didn’t develop PTSD. And the data that came out from working with our Australian colleagues showed that these appraisals really kick in at an early stage. So, even over the first couple of weeks, it was – you could easily measure and detect these sorts of beliefs that children had around the trauma and it was very strongly related to worse outcome.
Interestingly, we don’t really find a massive difference in the extent to which children have these appraisals across time – across age groups, sorry. Both, sort of, types of beliefs, these fragile – sort of, sense of being fragile and the sense of a permanent and disturbing change were strongly endorsed across the age groups and were strongly related to PTSD regardless of age group. Not much in the way of sex differences, interestingly. Ooh. So, that was a really important series of studies and it really helped us to think, well, this is an important way of approaching and understanding how children respond to trauma. We successfully received some money from the Medical Research Council here in the UK to look really closely, in much more detail, at what happens in the first couple of months. So, we think this was a really critical window when we think a lot of natural recovery happens, and we really wanted to understand what happens here. So, we know that PTSD can be chronic. Can we understand why some children go down that chronic path? Why do some children maybe get the initial onset of PTSD, but get better and other children seem to be – it’s almost like water off a duck’s back for many children. It – as horrible as these things might be, they very quickly settle down and there’s no lasting difficulties. So, can we explain how children might recover from trauma?
So, the ASPECTS study involved working with Emergency Departments in the East of England. So, there’s several Emergency Departments in this region, and we worked with eight to 17-year-olds. We recruited 260. They had all been involved in some kind of single incident trauma. We saw them at two weeks – well, we interviewed them and got them to do some questionnaires at two weeks and nine weeks, and they also did a structured interview for PTSD. But I’m going to focus on the pretty extensive questionnaire battery that we asked them to do, and that looked at the CPS – that included the CPSS, which is a good measure of PTSD symptoms. The questionnaire battery also looked at psychosocial factors, so social support and things like that, and also, these cognitive processes, so how children were trying to cope with and make sense of these trau – these – this experience.
So, the mean age was 14, so it was, sort of, tending towards more adolescent than child. Quite a mixed group ethnically. Slightly more boys than girls, and a range of, sort of, socioeconomic backgrounds. And here’s the data in terms of the types of trauma. You can see quite varied, but all single incident trauma. So, road traffic collisions, assaults and so on. But yeah, again, a wide variety of, sort of, inj – severity of injuries. Most children weren’t admitted, but about a quarter or so were admitted to hospital for, like, an overnight stay. That was – and then, that typically was perhaps the more – some of the more serious high-impact car crashes, where they might have a broken leg, something like that. Some children did end up in Intensive Care, but it was only a small group.
Okay, so what happened to these 200 plus children over time? So, we’ve been very thorough in looking at the ways in which one can assess for PTSD and of course, there’s ICD, there’s DSM and DSM and ICD both have, sort of, different ways of classifying PTSD. It doesn’t matter how you measure it. The rates of PTSD got bett – decreased over time. So, at two weeks, reasonably high rates of PTSD, sort of, one in six, one in five, something like that. If you do nothing, you have a – maybe have a conversation with my wonderful colleague, Clare Dixon, who helped us get this data, and my colleague Anna McKinnon, who helped gather these data. Maybe having a chat with them is really important, but – at two weeks, but what seemed to happen was that the symptoms settled down and by the nine-week point, there’s quite a lot of natural recovery, no formal psychological intervention.
And again, as with our previous work, we found no relationship between most demographic factors, the severity of their injury. The only thing that really stood out, perhaps, was you were at slightly greater risk if you were a bit older, but wasn’t as important as other factors, and being assaulted was quite significant. That was quite a big deal. Interestingly, being admitted was actually protective against PTSD and you can come up with your own reasons why you think that might be. My guess is that maybe – well, you – maybe you get more attention from hospital staff or maybe either – it was the children who got into road traffic collisions who typically got admitted. Our assaulted children, who had – really had been through an awf – some awful trauma, they typically didn’t get admitted. So, I think it could just be an artefact of it.
Right, so what we wanted to do is consider, well, what happens to these children over time? So, we considered this – the three groups of children. So, we could divide these groups – these children into three groups. The low symptom group, which is the biggest group, is the blue line here. They never really got any clinically significant symptoms on the CPSS. They were doing fine, and then, the two other key groups. So, they were the persistent group, who had PTSD when we first saw ‘em at two weeks and continued to have PTSD at that nine-week point. And then, also, the other group, final group, the recovery group. So, initially doing quite badly, but with the passage of time, seemed to, sort of, really spring back. And so, what we wanted to do is see, well, can we differentiate, you know, what’s go – are there different things going on for these children? And we did this by comparing them on a questionnaire battery that we got ‘em to do about two weeks – at that first timepoint, two weeks after the trauma.
Okay, so, what I’m going to do is just give you some – and I – a feel for the data and show you, as we’re going along, some of the questionnaire items that they completed at that two-week point. So, first of all self-blame. Now, in this instance, self-blame was completely unrelated to which trajectory you went down. Now, these events often were, sort of, very much accidents. Maybe they could’ve done something different, but it was only – unlikely that many – children came away with strong – a strong level of blame in the first place. But you can – as you can see, the spread of scores tend to be towards the low end and two is, like, the lowest score you can get. So, most children didn’t really have much self-blame and even if they did, it didn’t seem to be associated with PTSD anyway.
Similarly, with social support, most children said, “Yeah, I’ve got pretty good social support.” Most children were saying, “Yeah, I’ve got people I can turn to and talk to about what’s gone on,” and there were no differences between these three groups, the low symptom group, the recovery group, and the persistent PTSD group. So, these sorts of factors weren’t really that important. And this is where we start to get into the elements of the cognitive model of PTSD. So – and in both of these mechanisms, these processes, we – what we see here is that the recovery and persistent groups score higher than the low symptom group. There’s no difference between these two groups, so, the recovery group and the persistent group. They’re both scoring fairly highly. So, they both endorsed a fair amount of threat during the trauma, and they said, “Yeah, this was a really distressing experience. This was really scary. I really thought I might die.” They also said that they really struggled to make sense of what was going on. It was a real blur, they couldn’t think clearly, it was very confusing. And this is another process that’s highlighted in the Ehlers and Clark cognitive model, and this is meant to, sort of, put you at risk of having those much more fragmented, sensory-based, confused memories of the experience. So, struggling to make sense of the trauma as it’s occurring perhaps puts you at risk of struggling – of laying down these, kind of, coherent, clear memories of what happened and this confusion process, sort of, seems to capture this.
When we looked at the memory characteristics of this group, this is where we started to get differences between all three groups. So, the PTSD – persistent PTSD group, sorry, they scored highest on this measure. And they were significantly higher than the recovery group, who in turn, were scoring more highly than the low symptom group. So, there’s something about our memory characteristics as being really critical and particularly, kind of, differentiating between now, the group who get better and the group who had initial symptoms, but didn’t get better.
And this pattern was most acute, though, for appraisals. When we asked children to think – tell us, you know, what did they think about this, the children who went down the PTSD group were marked – were scoring much more strongly than the group who recovered. So, thinking – in fact, this ended up being more important than your early PTSD symptoms in deciding whether or not you had later PTSD. So, there was a huge range of responses to this trauma in terms of what it all meant, but some children really saw this in a very negative way. They really saw themselves as being very damaged. They really saw the world as being very, sort of, frightening and unpredictable and this was really critical for them.
Was something we looked at here was a short questionnaire of trauma-related rumination, so things like, “I couldn’t – I keep wishing I could go back in time and, sort of, mentally undo this. I keep wondering why me?” Now, these are, sort of, very open-ended questions and I guess that’s something that we all think these about – sorts of things about things in life. And when we get really stuck think – overthinking this kind of stuff, the suggestion is this, kind of, keeps the trauma very much active in our brain. And so, we start to get a bit of a paradox here. Of course, what we associate PTSD with, in one sense, is avoidance and not wanting to think about the trauma, but there’s also – sometimes people – the suggestion is people can get stuck, kind of, overthinking, “Why me? What did I do to deserve this?” So, it’s a bit of a – it is a bit of a paradox, but it shows the, kind of, range of reactions and the range of things that people, in particular children, are struggling to do. They’re trying to perhaps push away the horrible gory details, but they’re also trying to think, “Well, why me? What did I – why did this happen to me?” They’re trying to make sense of it, and yeah, again, the persistent PTSD group were scoring higher than the recovery group, who in turn, scored higher than the low symptom group on this.
Now, finally, this was a, sort of, slightly speculative measure. We wondered, well, maybe if you, kind of, made a deliberate effort to talk through what happens and maybe make sense of it in your mind, get it clear, try and piece it together and so on, maybe this would protect you from developing PTSD further down the track. So, rather than using avoidance, maybe if you try and confront it, try and make sense of it, try and get it clear in your mind, try and talk it through, this would help. So, what you can see is, on the left – the red there, the low symptom P – group, PTSD symptom group, there’s quite a lot of children were using this thing.
Now, we – this concept we class as ‘adaptive processing’, but it’s very much in, sort of, speech marks, because I’m not sure how – you’ve got to be very careful with this. You can see there was a whole bunch of – a real range of responses in that low symptom group. Some were definitely, definitely using this, the bulk were doing it somewhat, some weren’t really doing this. But what you’ll notice is that the recovery in persistent groups were actually – were saying yes to these sorts of things even more than the average child in the low group. I actually wonder if this is, sort of, suggestive of, kind of, the potential for rumination. Actually, you might try and be making sense of this. You can either overdo it and get, kind of, stuck overthinking it, or yeah, you struggle to, kind of, get some sort of coherent account, or you struggle to really, kind of, bring it together. So, doing this to some extent seems probably to be fine. The children in the lowest symptom group are doing this to some extent, but if you get stuck over doing it – overthinking this, this is a – this can be a problem, I’d say.
So, just to, sort of, summarise where we’re at. So, what we’ve shown is that the onset of PTSD symptoms we can understand, particularly in terms of, sort of, how threatened you felt during trauma, how confused you were. Also, I think being assaulted was involved in having an onset of PTSD. That seemed to be a marker for a worse outcome. But whether or not you continue to have PTSD over time seemed to be quite – these other cognitive processes kick in. So, in particular, the nature of your memories, if they’re, kind of, much more fragmented sensory-based, if you’re ruminating more about the trauma, if you’re, kind of, o – almost, yeah, overthinking it, working very hard to try and piece this together, and how – critically, how you see yourself, about how a child sees themselves after this trauma is really important. So, children are actively trying to make sense of this. They’re actively trying to think it through. They’re thinking about the consequences for the rest of their life. Some will be able to make sense of it, but some really get stuck and they’re not recovering.
So, obviously, this is just a couple of studies where we’ve looked at – or a handful of studies in the UK and my colleagues in Australia and New Zealand have looked at this stuff and was showing a strong relationship with PTSD. But is this replicated elsewhere? We’re just a couple of groups. What about elsewhere? My colleague, Gina Gomez, did a quest – she did a systematic review. She appraised all the studies that have looked at PTSD in children and looked at PTSD and also measures of appraisals, and she – pardon me, measures of appraisals. And she found 25 studies, including over 9,000 children, and across all of these studies, the relationship with PTSD was really strong. A correlation, if you’re interested in statistics, a correlation of .59. So, really very, very strong. It’s consistently involved, or associated with, PTSD.
Now, of course, not all studies may be able to show what is driving what, but certainly, in – our experience has been it seems to be the appraisals pushing later PTSD. And there’s evidence now for this mechanism, particularly, yeah, these beliefs, appraisals around the trauma, being important in PTSD for children all round the world. So, we’ve got ele – data from Palestine, Sri Lanka, China and so on. And one really excellent slide that I just want to briefly highlight, it’s this one by Ponnamperuma. Apologies for probably pronouncing her name incorrectly, but in her data in Sri Linka, a lot of trauma that these children in Sri Lanka have experienced, the war, as well as the tsunami from 14 years ago, the relationship between appraisals and PTSD was very strong. Similar to what we found in the UK and Australia and New Zealand. And what she did was she got these children to do measures of, like, how many traumas they’ve been involved in, also social support and so on.
And when she put all these measures into a model of PTSD, a linear regression model of PTSD, we can see what, kind of – what is the most important and how – what mechanisms are key. And yeah, there was relationships between gender, the amount of trauma you’d been involved in and ongoing adversity. These were all related to worse PTSD. But what you can see there in the final column, this is the, sort of, correlation of .49 is the – quite clearly the strongest of – correlation between appraisals and PTSD, even after you account for all the other effects of social support, gender, the amount of trauma a child has experienced. What – how the child was seeing the trau – seeing themselves in the world after this trauma was really crucial in whether or not they had PTSD. So, this aspect of the cognitive model is critical, really important.
What about multiple trauma? So, a lot of the traumas that I’ve talked about so far were these single incident traumas. What about multiple trauma? So, again, some fantastic work by Rachel Hiller and Sarah Halligan over in Bath. They were – they recruited a large sample of a hun – of children, 120, who were in care and who’d been involved in quite a lot of abuse and so on. About one in three of these children were pro – likely to have PTSD, and she worked with them and followed them up over a year. And what she found was that PTSD was, yeah, strongly related to the same sorts of factors. So, the nature of – the meanings around the trauma, so those appraisals, so using the same measure, this – the Children’s Post-Traumatic Cognitions Inventory. Strong relationship there and strong relationship, as well, to the nature of their memories and also, how they were coping. And so, in particular, both the, you know, the, sort of – that involves avoidance and ruminations, or overthinking, “Why me?” and so on.
And the appraisals were really critical and they were predicting PTSD 12 months down the line, in a way that even the degree of maltreatment that they – these children had experienced, that didn’t predict how much PTSD they continued to experience a year down the line. So, these cognitive processes really seem to be pretty crucial, pretty central to determining whether or not a child has a good or a bad outcome. Okay, so we just want to think a bit more about broadly – you know, more broadly about what’s going on for children. Obviously, what I’ve focused on a lot here is, sort of, individual psychological processes, so how the child records the trauma, what their memories are like, how they make sense of it and so on. It would be remiss of me to not think about, well, what goes on more broadly for these children? What’s going on in their – let’s say their family structures?
So, what we know is that there is definitely a link between, say, parent – aspects of the child’s environment and how the child gets on. So, one of the key things seems to be the parent mental health. There’s pretty consistent relationships between parents’ own depression or parents’ own PTSD and children’s PTSD. Some studies, including the work of my colleague Patrick Smith, down in London, with children in Bosnia, his work suggested that the relationship is bidirectional. So, both the parents’ mental health problems aggravate the child’s distress and similarly, the child’s distress and mental health difficulties are aggravating the parents’ mental health. So, it’s a complicated picture, but that’s what some of the evidence seems to be suggesting, but there’s definitely some sort of association.
Well, what about, sort of, cognitive processing, sort of, how people make sense of this – these experiences? And one of – and one thing that we’ve shown, and this was, again, analysis done by Rachel Hiller using some of the data we collected down in South London, where parents saw that their – or had the belief that maybe their child was permanently scarred psychologically by these experiences, that seemed to predict their own PTSD. So, their own reactions, and these were young children, these were, sort of, two to ten-year-olds, this particular study, where the parent saw that they were worried that their child had experienced a, sort of, permanent psychological harm, that seemed to then be involved in the persistence of their own PTSD. So, quite important to understand that parents themselves are trying to make sense of this and this is going to have knock – serious knock-on effects. And, of course, if they’re struggling with their own mental health, that may well have knock-on effects to their child.
In another study, called the PROTECT study, again, this was run by Sarah Halligan and Rachel over in Bath, they got a large sample of children, a bit younger, six to 13-year-olds, all involved in a single incident trauma. And what they looked at was how – and they looked in more detail about how parents’ coping affected how – and what the parents unders – how parents understood the trauma, how much of an impact did that have on their child’s recovery at the time? And what this data suggests is that there are various ways in which parents’ appraisals around trauma and what the parents do to, sort of, support their children or protect their children after trauma, might be important.
So, again, this – where a parent really saw their child as being, sort of, damaged in a, sort of, very permanent way, and of course, there are these, sort of, beliefs in society around trauma that it’s a scar you cannot recover from, where parents believed this, this seemed to not only predict child’s acute traumatic stress reactions, so the first month, but also a few months down the line there was a – definitely a significant relationship there, where – yeah, this was significant. They saw their child as being more vulnerable. If they were worried about their child being harmed again, this was a significant thing, and if they blamed themselves for the trauma in some way, that would predict, to some extent, their parents’ – sorry, their child’s traumatic stress symptoms six months down the line.
And what’s crucial here that – is their children were completing a self-report measure of PTSD. So, it was – yeah, so we were asking the parents to tell us how they were thinking, how they were responding to this trauma and the children themselves were telling us how they were getting on. And yeah, we found this relationship, even when the – even between the respondents, so that’s quite important. This isn’t just parents’ questionnaires relating to how they thought their child was doing. This was actually the children telling us exactly how they were getting on.
Similarly, where the parents were trying to perhaps avoid any potential threats or harm in the future, so perhaps being very careful about their journeys and so on, there wasn’t a huge relationship. That definitely was correlated with worse PTSD for the children. So, there are definitely – there seems to be something around how parents support children. Perha – this is perhaps younger children, but – slightly younger children, but something about how parents were responding, that seemed – and their way of thinking about all this, seemed to be having an impact on how their children were responding. So, I – yeah, it is something we need to be aware of. Don’t want to blame parents, but we need to be aware that their own interpretation of this and their own understanding seems to be playing a role here.
Okay, what can we learn from treatment? So, we’ve known for some time that children can get PTSD. Obviously, we need to intervene and support those children who aren’t getting better on their own. Now, multiple guidelines from the UK, Europe, internationally, suggest that some form of trauma-focused cognitive behavioural therapy is efficacious for PTSD. Now, trauma-focused CBT encompasses a whole bunch of approaches. There’s the – Judith Cohen’s manual of Trauma-Focused CBT developed in the US. There’s various other approaches out there. That’s probably the most commonly studied one. Here in the UK, we use Cognitive Therapy for PTSD, a lot of which is developed by my colleague, Patrick Smith, based on the Ehlers and Clark model by Anke Ehlers and David Clark. But there’s multiple manuals out there that you can use. And – but as a class of therapies, they have been shown to be pretty efficacious.
So, this is a recent systematic review and meta-analysis by Thole Hoppen and his colleagues in Germany and what he showed was that both for single incident trauma and for multiple traumas and PT – multiple event trauma, these sorts of psychological therapies for PTSD, so things like trauma-focused CBT, were pretty efficacious, and this is good to know. Sometimes I think people get worried that maybe these psychological therapies won’t work so well with multiple traumas, so things like abuse. Actually, the evidence is that they typically will do quite well. So, this is good news. We’ve got therapies that work.
And a bit more work done on this literature recently by Anke de Haan, again from Germany. She got a huge team of people to share their data with her and she was able to do what’s called an individual participant data meta-analysis. So, lots of data from lots of trials, and what she was able to show was that things like trauma-focused CBT are efficacious, really helpful for PTSD in children, regardless of our age, gender and, sort of, characteristics of the trauma. Whether or not a carer was involved in the treatment, but also, critically, the children who had quite bad PTSD symptoms got the most benefit.
So, even though we might be thinking, well, maybe trauma-focused CBT is fine for perhaps milder cases. Actually, no, the kids with really severe PTSD seem to get really, quite a lot of benefit from these sorts of treatments. So, this was a paper published in The Lancet Child Health. So, really strong evidence for this class of therapy is but how do they work? You know, what’s the active ingredients and can we – does this help us understand better how – yeah, perhaps can we understand how children recover and get over trauma? And this could be very useful for our understanding of PTSD going forwards.
So, just one study that has unpacked this. This is the study that we led in East Anglia. The – this was using children that we identified through the ASPECT study. So, those children who weren’t getting better at the two-month point, we said, “Would you like to come into a clinical trial?” And we were trying to work with them fairly early on, not in the first few weeks, obviously, but about two to six months post-trauma. And we recruited from the Emergency Departments, but also, we took referrals from CAMHS and GPs, so Child and Adolescent Mental Health Services, but also Doc – Hospital or Family Doctors and so on.
So, we – it wasn’t a huge study. We recruited 29 children, and they were randomised to either cognitive therapy for PTSD straightaway, so that’s a form of trauma-focused CBT, or they were put on a waiting list for ten weeks. And as you can see, perhaps not a big surprise, the children who got the cognitive therapy, their symptoms really came down quite a lot. The children on the waiting list group didn’t get so much of a response. We – they then were offered the same therapy. Really important to highlight that once they’ve got better, they stayed well. We saw them at six months and 12 months for follow-up and they were staying well, and also, their depression and other wider functioning improved. So, this is generally good news. What we wanted to do is unpack well, why is it that maybe some – yeah, what seems to be changing? What seems to be underpinning recovery?
So, again, we did the same sort of thing. We got them at both – at baseline, mid-treatment and post-treatment. We got ‘em to do a series of questionnaires, and what you can see is that the – at baseline, the children in the – who were allocated – there was about 14/15 children allocated to the waiting list arm of this – in this trial, they endorsed some self-blame, but maybe a little bit more. I don’t think it was statistically significant than the kids in the cognitive therapy group. But neither group really changed over time in terms of their self-blame. So, that didn’t seem to be involved in recovery.
Similarly, both groups have said, “I’ve got pretty good social support. I’ve got – I can speak to my friends or family. I’ve got someone I can talk to,” and that didn’t really change over time. So, these bars here, the red bars are for the waiting list group, the blue bars are for the cognitive therapy group, and we’ve got before therapy and after therapy, or before waiting list and after waiting list. So, not much change here. What about our other cognitive processes that we looked at over time? So, what you can see here in terms of both memory quality, the appraisals, rumination and safety-seeking behaviours, the wait list group, no real change over time and some things are even getting slightly worse. But the cognitive therapy group we saw a marked shift. So, they had about, I think, on average, about eight sessions of cognitive therapy and we were able to, in that time, really improve the quality of their memories. They were much more, sort of, sensory based, much more overload and overwhelming. Their appraisals really dropped significantly. The rumination came down quite a lot, as well, and they dropped this safety-seeking behaviour. So, they were less likely to be, kind of, checking everyone around them, less likely to be having their phone to hand and ready to call someone at a moment’s notice for support. That dropped quite a lot.
And I’ll just say that on these charts here, the bottom is, basically, the lowest score you can get. So, you can’t go lower than 11 on the memory quality questionnaire. You can’t go lower than 25 on the appraisal measure and so on. So, the shift here is really quite marked. They really did come down quite a lot. Another thing we can do with these treatment trials is say – do something called a mediation analysis. We know that receiving some form of trauma-focused CBT seems to be critical in getting better. That seems to yield much better improvements, but we can also understand well, how – well, we can explore how does that have an effect? And this is called a mediation analysis. So, what all these trials that are listed here from all around the world, we’ve given a little bit of information about each one on this slide, what you can – all these studies showed that the effect of receiving trauma-focused – some form of trauma-focused CBT compared to being on some kind of controlled condition, was mediated through change in appraisals. So, the improvement which you then got in your PTSD symptoms seemed to come about through a change in appraisals, and five clinical trials have shown this.
So, both our – the relatively small trials that we’ve done here in the UK, slightly larger study by Carmen McLean and Edna Foa over in the US with sexually abused children, sexually assaulted children, and then two large studies by the groups in Germany and Norway, showed that, yeah, this change of appraisals over – through the course of treatment really seemed to be critical in your PTSD symptoms coming down. So, strong evidence both from – that was strong evidence both from the prospective longitudinal studies as people develop PTSD, but also from how children get better, that it’s – how children see themselves, how they see others is a really crucial ingredient.
Now, I’ve focused today a lot on PTSD and well, in this talk, I’ve spoken a lot about PTSD. Of course, it’s not the only outcome, mental health outcome that is important after trauma. We know that there’s a whole host of anxiety conditions and depression that can result. So, one systematic review led by Viktoria Vibhakar, published in the Journal of Affective Disorders, back in 2019, I think, showed that as many as one in four children will be quite depressed, will be, kind of, clinically significant levels of depression after trauma. There’s lots – you’re twice as likely to have depression if you’ve been involved in trauma versus if you haven’t. So, it’s important to consider other outcomes other than PTSD, and depression is one we’ve looked at.
So, in both – just want to, sort of, compare and contrast the results for PTSD with depression in the two studies I mentioned earlier, the ASPECTS study and the PROTECT study, these two perspective longitudinal studies. And in both of these studies we had measures of PTSD and depression and of course, in both we measured appraisals and memory quality, and we did this with the same questionnaires. And what you can see with the data is that the – and the appraisals and memory quality were measured at two weeks, or there – near enough, in the first month of a trauma. What you can see is that appraisals at that early stage were strongly related – this is a – these are strong correlations with later PTSD, but also later depression. Really, it’s a similarly strong relationship there, so very important. So, what we know as well is that these – if we can unders – we need to take seriously how children see themselves and others after the trauma. This is important and not just for PTSD, but also for depression.
Now, in memory quality, what we showed here was that the nature of the trauma memory was also important in depression, but perhaps not quite as much as PTSD. So, there’s some evidence of specificity. So, while appraisals seemed to be similarly strongly involved in both PTSD and depression, it looks like that the nature of your memories is more important in PTSD than depression. It’s not a huge difference in the strength of those correlations, .58 versus .59 – or .49, .39 versus .30, but there seems to be some sort of discrepancy there.
Okay, well, thank you for listening. I’m just going to, sort of, sum up. Yeah, we know that recovery after trauma, but particularly single incident traumas, is pretty normal. Certainly, in the, sort of, very easy to – relatively easy to study single event traumas, like car crashes, assaults, most children will probably be okay. Even if you do get some early symptoms, things might settle down. But we know from studying those children that the children who don’t settle down seem to have much more memories that are much more fragmented, they’re much more negative in their appraisals around their trauma, and they’re more likely to use rumination. And these seem to be quite critical processes and we’ve seen that in a few different studies, and we’ve seen this round the world, as well.
It’s a bit of a paradox, though. There’s this interesting paradox that children are both pushing away memories of the trauma, but they’re also overthinking. So, there’s a weird, kind of, relations – a weird series of relationships, weird series of mechanisms going on here, that perhaps we think children are, sort of, avoiding the gory details, but are still actively trying to make sense of this experience. They want it to fit. They want it to make sense, but sometimes, tragically, they just get really stuck in trying to resolve this, and this is a crucial thing, we think, with PTSD now.
A lot of these mechanisms, a lot of these processes I’ve talked about today, these cognitive processes, seem to be important for both single and multiple trauma. And what we’ve been able to establish so far from clinical trials, that these are definitely worth targeting in psychological therapies. If we really try and tackle how children see themselves and others, if we try and get more coherence with their memories, that we see shifts in those processes and that seems to be involving children recovering from trauma.
I guess some – and so there’s, you know, hopefully lots here for you to think about. I guess, you know, one thing, and I’ve touched on this during my talk, there’s a lot – there’s a, sort of, pervasive sense, sometimes, of gloom around trauma. We maybe see society – certain societies, certainly in the UK, I think there’s a lot of, kind of, fear around PTSD and trauma and the, sort of, perception that you can’t recover and you might be stuck – you might be permanently, sort of, scarred as a consequence. Well, this seems to be, really importantly, actually making people more distressed and maintaining the difficulties and of course, what I’ve been able to show today, as well, as I – from some of the excellent clinical trials that are out there, actually, we know from – the bulk of that evidence suggests that actually, children can get over these experiences. So, we need to be very careful about how we talk about trauma and not, kind of, conveying those sorts of ideas. As important as it is to recognise the horrendous damaging effects of trauma on children and we need to take this seriously, we need to, sort of, fight this, sort of, permanent damage view.
So, thank you so much for listening. Really want to acknowledge the wonderful contribution of my colleagues, who helped us gather all these data and there’s more besides. I – but these are some of my key colleagues I’ve worked with on some of this work, and I must acknowledge the funding of the UK Medical Research Council and the UK National Institute for Health and Social Care Research. If you’d like to go and download, most of these measures are actually available on the Children and War website, I think I’ve given – which I’ve given there, or you can find my personal website. Thank you again for listening.