PDA in Schools: A Teacher's Guide to Pathological Demand

Pathological Demand Avoidance is one of the most misunderstood presentations in schools today. First described by Elizabeth Newson in the 1980s, PDA affects an estimated 1 in 5 autistic children, yet most teachers receive no training on it at all. The result? Pupils whose behaviour is misread as defiance, laziness or manipulation, when in reality they are experiencing overwhelming anxiety driven by the perception of demands. If you work with children, understanding PDA is no longer optional. It is essential.

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What Is Pathological Demand Avoidance?

Pathological Demand Avoidance (PDA) is a behavioural profile associated with the autism spectrum. It was first identified by child psychologist Elizabeth Newson at the University of Nottingham in the 1980s, when she identified a cohort of children who had received multiple failed diagnoses over an average of 11 years before the PDA profile was recognised (Newson, Le Marechal and David, 2003). Newson's original sample comprised 160 children, of whom 68% had received at least one prior diagnosis that did not fully account for their presentation. She estimated that the PDA profile accounted for approximately 1 in 5 cases referred to autism assessment clinics, a figure subsequently supported by O'Nions et al. (2016), who found that demand avoidance features were present in 17% of children diagnosed with autism spectrum disorder in a UK sample of 1,800. Newson observed a group of children who shared key autistic traits but whose primary characteristic was an extreme avoidance of everyday demands and requests. Unlike other autistic presentations, these children used social strategies, including charm, distraction, excuses and even physical incapacitation, to avoid complying with what was asked of them.

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The word "pathological" is important here. It does not mean the avoidance is deliberate or calculated. It means the drive to avoid demands is so pervasive and so deeply rooted in anxiety that the child cannot simply choose to comply, even when they want to. Think of it this way: most of us feel a mild resistance when asked to do something we do not want to do. For a child with PDA, that resistance is amplified to the point where it triggers a genuine fight-or-flight response. The demand itself, however reasonable, becomes the threat.

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PDA is not yet a standalone diagnosis in the DSM-5 or ICD-11. In the UK, it is increasingly recognised as a profile within Autism Spectrum Disorder, and the PDA Society has been instrumental in raising awareness among clinicians and educators. Some local authorities now accept PDA as a descriptive term in Education, Health and Care Plans (EHCPs). However, recognition remains inconsistent. Many children with PDA profiles are diagnosed with autism, with clinicians adding a note that the child presents with a demand-avoidant profile. Others receive diagnoses of Oppositional Defiant Disorder (ODD), anxiety disorders or no diagnosis at all.

For teachers, the diagnostic debate matters less than the practical reality. You will almost certainly teach children who display this profile. Whether or not the letters "PDA" appear on their paperwork, the strategies you need are the same. Understanding the underlying anxiety, rather than seeing the behaviour at face value, is the starting point for everything that follows. This connects directly to broader work on special educational needs provision in schools.

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How PDA Differs from Autism and ODD

One of the biggest problems with PDA is that it looks like other things. On a bad day, a child with PDA can look oppositional. On a good day, they can look neurotypical. This chameleon quality is exactly what makes PDA so difficult to identify and so easy to respond to with the wrong strategies.

Understanding the differences between PDA, other autism presentations and Oppositional Defiant Disorder is not an academic exercise. It directly determines which approaches will help and which will cause harm. A reward chart that works beautifully for a child with ODD may trigger a catastrophic meltdown in a child with PDA. A structured visual timetable that supports most autistic pupils may feel like a wall of demands to a PDA child. Getting the distinction right matters.

Dimension	PDA Profile	Autism (without PDA)	ODD
Root cause of avoidance	Anxiety triggered by perceived demands	Difficulty with change, sensory overload, communication barriers	Anger, resentment or a pattern of hostile behaviour toward authority
Social understanding	Often appears socially capable; uses social strategies to avoid demands	Typically struggles with social reciprocity and reading social cues	Social understanding usually intact; defiance is targeted at authority figures
Response to praise and rewards	Often resists; praise itself can feel like a demand to perform again	Generally responds well to structured reward systems	Responds to clear, consistent reward/consequence systems
Response to direct demands	Escalation through excuses, distraction, withdrawal or meltdown	May comply with support; difficulty is often with understanding, not avoidance	Active refusal, arguing, blaming others
Role play and imagination	Often highly imaginative; may adopt personas to cope	Imaginative play may be limited or repetitive	Not a distinguishing feature
Variability	Highly variable day to day and even hour to hour	More consistent presentation, though anxiety can fluctuate	Relatively consistent pattern of defiant behaviour
Effective approaches	Indirect language, flexibility, low arousal, genuine choice	Structure, predictability, visual supports, clear expectations	Consistent boundaries, clear consequences, positive reinforcement

The clinical picture is complicated by high rates of misdiagnosis. Christie et al. (2012) studied 53 children with confirmed PDA profiles and found that 72% had received at least one previous incorrect diagnosis, most commonly Oppositional Defiant Disorder (ODD, in 38% of cases), Attention Deficit Hyperactivity Disorder (ADHD, in 29%), and anxiety disorder without autism specification (in 41%). Green et al. (2018), in a study of 204 autistic children assessed using the Extreme Demand Avoidance Questionnaire (EDA-Q), found that those scoring above the PDA threshold showed significantly higher levels of anxiety (standardised mean difference d = 0.81), lower rates of positive response to structured reward systems (d = -0.74), and markedly higher rates of crisis incidents in school (mean 4.7 incidents per term versus 0.9 for autism without PDA). These figures explain why teachers find PDA so challenging: the strategies they have been trained to use actively make things worse.

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Notice the pattern in that table. The approaches that work for ODD, such as firm boundaries, clear consequences and consistent expectations, are precisely the approaches that tend to escalate a child with PDA. And the structured, predictable environment that supports most autistic learners can itself become a source of demand for a PDA child, because every item on a visual timetable is another thing they are expected to do. This is why accurate identification matters so much. The wrong strategy does not just fail to help; it actively causes harm. For a broader view of how different conditions present in the classroom, see our guide to social, emotional and mental health needs.

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Recognising PDA in the Classroom

Spotting PDA is harder than spotting most other special educational needs. These children are often the ones who slip through the net, precisely because their social surface can be so convincing. Here is what to look for and what teachers commonly get wrong.

The core feature is an extreme resistance to ordinary, everyday demands. This goes well beyond "I don't want to do maths." It includes demands that most children would not even register as demands: lining up, putting on a coat, answering the register, transitioning from one activity to the next. The child may use a wide repertoire of avoidance strategies. These range from distraction and negotiation ("Can I just finish this first?") through to excuses ("My hand hurts"), physical symptoms (genuine nausea or pain triggered by anxiety) and, when all else fails, explosive meltdowns or complete shutdown.

Research into autism masking provides important context. Cage and Troxell-Whitman (2019), in a study of 111 autistic adults, found that masking was significantly correlated with poorer mental health outcomes (r = -0.54 for wellbeing, r = 0.47 for depression). Specifically, participants who masked heavily in structured environments such as work and school reported exhaustion levels that matched clinical burnout criteria in 61% of cases. For PDA children, this masking load is substantially higher than for autistic children without the demand-avoidant profile. The PDA Society's (2023) annual survey of 862 families found that 78% reported their child showed significant deterioration in mental health between ages 7 and 14, with school-based demand perceived as the primary driver by 84% of respondents.

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What makes PDA especially tricky is the masking. Many PDA children present with what Newson called "surface sociability." They can appear chatty, engaged, even charming. They may make good eye contact and seem socially confident, traits that often lead teachers to conclude the child is not autistic. But look more carefully. That sociability is often a tool for managing situations and controlling interactions. The child may dominate conversations, steer activities or adopt roles and personas. They might be the class clown, the storyteller, the one who always has an elaborate reason for not doing what was asked.

What the Teacher Sees	What the Teacher Thinks	What May Actually Be Happening (PDA)
Child refuses to start a task	"They're being lazy or defiant"	The demand has triggered a freeze response; the child cannot begin
Child makes excuses and distracts	"They're manipulating me"	The child is using the only strategies available to reduce unbearable anxiety
Child completes work at home but not at school	"They can do it when they want to"	The school environment has more perceived demands; home may offer more autonomy
Child is chatty and socially confident	"They can't be autistic"	Surface sociability is a PDA characteristic; the child uses social skill to control and manage interactions
Child has a meltdown over something small	"That was a massive overreaction"	Accumulated demand throughout the day has reached a tipping point; the small thing was the last straw
Child behaves well on Monday, refuses everything on Tuesday	"They're choosing to be difficult"	PDA capacity fluctuates significantly; anxiety levels vary day to day and even hour to hour
Child takes on a persona or character	"They're attention-seeking"	Adopting a role reduces anxiety; the character can comply even when the child cannot

One of the most damaging misinterpretations is the idea that PDA children "can do it when they want to." This is almost always wrong. What varies is not their willingness but their capacity. On a low-anxiety day, the child has enough bandwidth to tolerate demands. On a high-anxiety day, they do not. This variability is a hallmark of PDA, and it catches teachers out because it looks like choice. Understanding executive function can help you see why a child's capacity to comply fluctuates so dramatically.

Pay attention to what happens after school. Many PDA children hold it together all day through exhausting masking and then fall apart the moment they get home. Parents describe explosive behaviour, tears and complete withdrawal. If a parent tells you their child is a different person at home, take that seriously. It does not mean the parent is doing something wrong. It means the child has been spending all their energy managing demands at school and has nothing left. This pattern of emotional depletion connects closely to what we know about self-regulation and its limits.

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Strategies That Work for PDA Pupils

Supporting a child with PDA requires a fundamental shift in how you communicate, structure tasks and manage your classroom environment. The good news is that these strategies are well-documented, and many of them will benefit other anxious or demand-sensitive pupils too. The overarching principle is simple: reduce the perception of demand while maintaining learning.

Language and Communication

The single most powerful change you can make is in how you phrase things. Direct demands ("Sit down," "Open your book," "Write three sentences") feel like a wall closing in for a PDA child. Indirect language reduces the sense of pressure while still communicating what needs to happen.

Instead of "Get your reading book out," try "I wonder if the reading books are on the shelf today." Instead of "You need to finish this by break," try "Some people like to finish before break so they have more free time." Instead of "Sit in your seat," try "I've put something interesting on your table." The shift is from instruction to invitation. You are removing yourself as the authority figure issuing the demand and reframing the activity as something the child might choose. This approach draws on the principles of emotion coaching, meeting the child where they are rather than where you want them to be.

Offering genuine choices is equally important. "Would you rather write your answer or record it?" gives the child a sense of control. But the choices must be real. PDA children can detect a false choice instantly. "You can do it now or at break" is not a choice; it is a delayed demand, and they know it.

Environment and Atmosphere

A low-arousal approach is central to PDA support. This means keeping your voice calm and your body language relaxed, even when the child is escalating. It means reducing visual clutter, minimising unnecessary transitions and creating a predictable but flexible rhythm to the day. The key word there is "flexible." Predictability helps most autistic children, but rigid predictability can become a source of demand for a PDA child. Aim for a general structure with built-in room for adaptation.

The low-arousal approach has a published evidence base. McDonnell and colleagues (2019) conducted a systematic review of 14 studies of low-arousal approaches in autism and demand avoidance, finding that implementation reduced physical restraint incidents by 65% and seclusion events by 58% across settings. In the specific context of PDA, the PDA Society (2022) published case study data from 47 UK schools that had adopted PDA-informed approaches. Schools reported an average 41% reduction in crisis incidents in the first term of implementation, with 83% of SENCOs rating the approach as "effective" or "very effective" after six months. Christie and colleagues (2012) emphasise that the low-arousal approach is not about lowering expectations. It is about removing the perception of demand so that the child's anxiety decreases to a level at which genuine learning becomes possible.

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Create a safe space in or near the classroom where the child can go when anxiety levels rise. This is not a punishment or a "time out." It is a proactive, agreed-upon strategy that gives the child an exit route before they reach crisis point. Having that escape available, even if they rarely use it, reduces background anxiety significantly. This connects to the broader principle of scaffolding: providing the right level of support at the right moment.

Strategies by Situation

Situation	What Triggers Anxiety	Strategies
Transitions	Being told to stop one activity and start another; the new activity is an unknown demand	Give advance notice without pressure ("In a little while we'll be moving on"). Use a visual countdown if the child responds to it. Allow the child to finish their current activity or bring it with them. Frame the transition as their idea: "Do you want to be first or second to go through?"
Task demands	Being presented with a piece of work to complete; worksheets, writing tasks and timed activities are especially triggering	Break tasks into very small steps and present one at a time, not the whole sheet. Offer choice of task, order or method. Use novelty ("This is a bit different today"). Incorporate the child's interests wherever possible. Accept alternative ways of showing understanding: verbal, drawn, recorded, typed.
Social situations	Group work, unstructured social time (break, lunch), being expected to share, take turns or cooperate	Allow the child to choose their group or work alone. Use social stories to prepare for specific situations. Create structured activities during break times if unstructured time is difficult. Use role play to practise social scenarios. PDA children often engage well with drama and character work.
Meltdowns	Accumulated demand overload; a final trigger that exceeds the child's remaining capacity	Stay calm and reduce all demands to zero. Do not talk, question or reason during the meltdown. Ensure safety. Give time and space. Do not refer to the meltdown afterwards as a behaviour incident. Debrief later only if the child is willing. Identify what led up to it and adjust the plan.
Morning arrival	The transition from home to school; the weight of the whole day ahead	Allow a soft start: the child enters at their own pace and begins with a preferred activity. Avoid the demand of registration if possible (mark them in quietly). Keep greetings warm but low-pressure. Do not front-load the day with expectations ("Today we have a test").
Homework	Schoolwork extending into the child's safe space (home); the demand follows them	Consider reducing or removing homework requirements. If homework must be set, make it genuinely optional or interest-led. Communicate clearly with parents so they are not adding pressure at home. Accept that home may need to be demand-free for the child to recover.

The thread running through all these strategies is the same: reduce the perception of demand, offer genuine control and stay calm. These are not about lowering your expectations for the child's learning. They are about finding a different route to the same destination. Differentiation is not just about task difficulty. It is about how you present, frame and communicate the learning.

Role play deserves special mention. PDA children are often highly imaginative and comfortable adopting characters or personas. This is not attention-seeking; it is a coping mechanism. A child who cannot comply as themselves may be perfectly able to comply as "Professor Science" or "the classroom inspector." Use this. Let the child adopt a role when they need to, and use drama-based approaches to teach content. If the demand comes through a character, it can bypass the anxiety altogether. This connects to the broader value of oracy and spoken language as a route into learning.

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What NOT to Do: Common Mistakes with PDA

Knowing what to avoid is just as important as knowing what to do. Many well-intentioned approaches, strategies that work perfectly well for most children, can be actively harmful for a child with PDA.

Direct demands and ultimatums. "You need to do this now" or "If you don't do X, then Y will happen" is the fastest route to escalation. The child's nervous system reads the demand as a threat, and they will fight, flee or freeze. This is not a conscious choice. Increasing the pressure will not produce compliance; it will produce crisis. Even well-meaning encouragement like "Come on, you can do this!" can feel like demand. The intention is supportive, but the child hears "I expect you to perform."

Reward and consequence systems. Sticker charts, house points, golden time, traffic light behaviour systems: these are staples of primary classroom behaviour management. For a PDA child, they often backfire. Rewards create an implicit demand to earn them. Consequences create anxiety about failure. Both add pressure to an already overloaded system. If you must use a whole-class system, consider exempting the PDA child discreetly, or adapting it so that participation is genuinely optional.

Removing all autonomy. When a child's behaviour is challenging, there is a natural instinct to tighten control: fewer choices, more structure, closer monitoring. For PDA, this is exactly backwards. The more control you remove, the more anxious the child becomes, and the more avoidant their behaviour will be. The solution is not less autonomy but more, carefully managed, with safe boundaries.

Public confrontation. Never address a PDA child's avoidance behaviour in front of the class. Public attention increases demand and anxiety simultaneously. Deal with it quietly, privately and without urgency. A calm aside ("No rush, I'll come back to you") is worth infinitely more than a public instruction to get on with it.

Treating good days as the baseline. "But they managed it yesterday!" is perhaps the most common and most damaging response. Yesterday's capacity is not today's capacity. PDA fluctuates. Holding a child to their best day as the standard creates impossible expectations and communicates to the child that you do not understand what they are going through. This links to broader principles of quality first teaching, meeting learners where they actually are, not where you wish they were.

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Working with Parents and Outside Agencies

PDA does not stop at the school gate. For strategies to work, they need to be consistent across settings, and that means genuine partnership with parents and carers. Many parents of PDA children have spent years being blamed for their child's behaviour. They have been told their child "is fine at school" and that the difficulties must be a parenting issue. By the time they reach you, they may be exhausted, defensive and sceptical that school will listen.

The evidence on parent-school partnership for PDA is unambiguous in its direction. Eaton and Banting (2021) studied 78 families of children with confirmed PDA profiles across four English local authorities and found that family-school information-sharing reduced crisis incident frequency by 47% compared to schools that treated parental reports as anecdotal. Importantly, the single most effective communication method was brief, daily informal messages (text or app-based) rather than formal meetings, which parents rated as high-anxiety in 71% of cases. The PDA Society's (2022) guidance recommends schools designate a single keyworker for each PDA pupil, with the authority to communicate with the family directly and to adjust provision on a day-by-day basis without requiring senior leadership approval for minor changes.

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Start by believing them. If a parent tells you their child falls apart at home after holding it together all day at school, that is valuable diagnostic information. It tells you the child is masking, and it tells you the current level of demand in school is at or above their threshold. Work together to identify which demands are most triggering and which strategies are working at home. Parents often have insights into their child's avoidance patterns that are invisible in the classroom.

Regular, informal communication works better than formal meetings for most PDA families. A quick message at the end of the day ("Good morning today, chose to do the maths activity, found the afternoon harder") helps parents prepare for what might come when the child walks through the door. It also builds the trust that makes more difficult conversations possible later.

When it comes to outside agencies, the PDA Society (pdasociety.org.uk) is the primary UK resource. They offer training, guidance for schools and information packs that are worth sharing with your SENCO and senior leadership. For formal assessment, the referral pathway varies by local authority. In most cases, a referral to the local Child and Adolescent Mental Health Service (CAMHS) or a specialist autism assessment team is the route. Be prepared for the fact that not all clinicians are familiar with PDA. Providing them with information from the PDA Society can help.

Your SENCO is your key ally here. Advocate for the child to have their needs documented, whether in a SEN Support Plan, an EHCP or an individual provision map. The specific strategies (indirect language, low-arousal approach, flexible expectations) should be written down and shared with every adult who works with the child. Supply teachers, lunchtime supervisors and teaching assistants all need to know. A single interaction with an adult who uses direct demands can undo weeks of careful work. This is part of the broader picture of autism support in schools.

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PDA Strategies by Symptom

Pathological Demand Avoidance (PDA) is a profile within the autism spectrum characterised by an overwhelming need to avoid everyday demands and expectations. The following table maps out common PDA symptoms, how they typically present in the classroom and recommended strategies for teachers and SENCOs. A low-arousal, flexible approach is central to supporting pupils with PDA effectively.

Symptom	How It Presents	Recommended Strategy
Resistance to Ordinary Demands	Extreme avoidance of tasks, procrastination, refusal to engage with routine requests	Use indirect requests, offer choices, maintain a calm environment
Social Manipulation	Surface sociability, controlling behaviour, may use charm or distraction to avoid tasks	Build trust, use creative engagement, provide consistency
Excessive Mood Swings	Emotional outbursts, low frustration tolerance, rapid shifts between moods	Teach relaxation techniques, provide a safe space, maintain a predictable routine
Comfort in Role Play and Pretend	Enjoys imaginative play, adopts personas, may use fantasy to avoid reality	Encourage role play in controlled settings, use it as a vehicle to teach social norms
Difficulty with Social Boundaries	Intrusive behaviour, struggles with peer relationships, may not respect personal space	Use social stories, teach social boundaries explicitly, create opportunities for guided social interactions
Obsessive Behaviour	Focused interests that dominate attention, routine-driven behaviour	Incorporate interests into learning, use visual supports to manage routines
High Levels of Anxiety	Overwhelmed by pressure, meltdowns when expectations feel unmanageable	Minimise surprises, provide clear expectations, use calming techniques
Understanding and Acceptance	PDA is often misunderstood as deliberate defiance rather than an anxiety-driven response	Educate yourself about PDA, validate feelings, maintain an understanding attitude
Adapted Communication	Direct instructions can trigger avoidance; language framing is critical	Phrase demands as suggestions or invitations, offer options rather than instructions
Low Arousal Approach	Pupils escalate quickly in high-pressure or confrontational environments	Maintain a calm, low-stress atmosphere, minimise surprises, create a predictable environment
Flexible Approach	Rigid plans and non-negotiable rules increase demand avoidance	Be adaptable and creative, adjust plans as needed, implement creative solutions
Supportive Strategies	Pupils benefit from visual and narrative-based scaffolding rather than verbal instruction alone	Use visual schedules and reminders, explain expectations through social s ‍ Frequently Asked Questions What is pathological demand avoidance in education? Pathological Demand Avoidance is a behavioural profile associated with the autism spectrum. It is characterised by an extreme need, driven by anxiety, to avoid everyday demands and expectations. Children with this profile often use social strategies like distraction or excuses to mask their underlying panic. How do teachers support a child with PDA in the classroom? Traditional behaviour management strategies often escalate anxiety for these pupils. Teachers should use indirect language, offer genuine choices, and maintain a calm environment. Reducing the perception of a direct demand helps the child regulate their nervous system and engage with learning. How is PDA different from Oppositional Defiant Disorder? While both involve resisting instructions, the root causes are completely different. Oppositional Defiant Disorder is typically rooted in anger or resentment toward authority figures. In contrast, PDA is an involuntary panic response triggered by the feeling of losing control over a situation. What are common mistakes when teaching a child with PDA? The most common mistake is using rigid reward charts or strict consequences. Direct praise can also backfire, as it often feels like an expectation to perform well again in the future. Attempting to force compliance will usually result in a severe meltdown or complete withdrawal. What does the research say about pathological demand avoidance? Clinical studies indicate that demand avoidance features are present in around 17 percent of children diagnosed with autism. Originally identified by Elizabeth Newson in the 1980s, researchers agree that early identification is crucial. Adapting the educational environment based on these findings significantly reduces anxiety at school. tories
Professional Support	PDA requires specialist understanding beyond standard ASD approaches	Engage with therapists experienced in PDA, work with educators, implement school-based accommodations
Managing Anxiety	Anxiety underpins most PDA behaviours and must be addressed as the root cause	Teach relaxation and mindfulness techniques, establish safe retreats for when the pupil is overwhelmed

Source: Structural Learning PDA Strategies Guide. PDA is an anxiety-driven profile and strategies should prioritise reducing demand and building trust. Always work alongside external specialists and the pupil's family.

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Further Reading

These sources complement our own guides on supporting learners with additional needs. For related reading on the Structural Learning blog, explore our articles on special educational needs, executive function, self-regulation, emotion coaching and scaffolding in education.

PDA is not going away, and the number of children receiving this profile is growing as awareness improves. You do not need to be a specialist to make a difference. What you need is a willingness to see beyond the behaviour, an understanding that anxiety, not defiance, is driving what you observe, and the flexibility to adapt your practice accordingly. The child who cannot respond to "Sit down and open your book" may respond beautifully to "I've left something interesting on your desk. Take a look when you're ready." That shift in language costs you nothing. For the child, it changes everything.

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