{
  "_meta": {
    "agent": "A04",
    "builtOn": "2026-10-21",
    "count": 40,
    "sources": "Peer-reviewed papers found and checked on Crossref (api.crossref.org/works/<doi>) with abstracts read there or on Europe PMC; open-access status from OpenAlex. Charity and organisation pages opened on 2026-10-21 (PDA Society, National Autistic Society, PDA North America). Books checked on the publisher's page. Nothing cited that was not opened today.",
    "gaps": [
      "PDA Society 'Parental blame and the PDA profile of autism' (2023 report by Running & Jata-Hall): the page and PDF returned HTTP 429 / a redirect to the homepage on 2026-10-21, so its figures are NOT cited on the page.",
      "Gillespie-Smith et al. (2021): no matching record was found on Crossref under that author and topic on 2026-10-21, so it is not cited.",
      "Tomlin Wilding's 2020 blog proposing 'Pervasive Drive for Autonomy' was not opened directly; the page attributes the alternative name to PDA and autistic people in general, as the National Autistic Society and PDA Society pages do.",
      "PDA Society guide pages are sometimes served with a fundraising overlay to automated readers; the pages cited below were read in full on 2026-10-21."
    ],
    "unverified": [],
    "fixes": [
      {
        "id": "2026-10-21-SR1-critics-evidence",
        "finding": "SR1 (panel 2026-10-21)",
        "where": "why.html section 13 + timeline",
        "what": "Critics get their strongest evidence: 2026 systematic review (all 12 high risk of bias, circular logic), 2024 scoping review (21 of 22 UK), Green 2020 (circular sampling), Egan 2020 (ADHD link)."
      },
      {
        "id": "2026-10-21-SR4-onions-full",
        "finding": "SR4",
        "where": "ws-onions-2014-profile, why.html sections 1 and 10",
        "what": "Summary includes antisocial traits approaching the conduct-problems group; no longer cited for the \"differs from ODD\" list."
      },
      {
        "id": "2026-10-21-SR6-persistence",
        "finding": "SR6",
        "where": "why.html section 13",
        "what": "Faroe Islands 1-of-9 follow-up cited (Gillberg 2015)."
      },
      {
        "id": "2026-10-21-CL4-build-back",
        "finding": "CL4",
        "where": "why.html section 2 deep dive",
        "what": "O'Nions & Eaton 2020: avoid strengthening avoidance habits; tolerance can grow gradually."
      },
      {
        "id": "2026-10-21-PL6-autonomy",
        "finding": "PL6",
        "where": "why.html section 3",
        "what": "Autonomy as a need in its own right, PDA-authored source."
      },
      "2026-10-22 REF: ws-newson-2003 oaUrl: BMJ PDF link -> PubMed Central PMC1763174 (BMJ asks for payment, browser 23:39 UTC; PMC PDF free, 23:40 UTC) — audit pass 2 P2.10 MISLABELLED",
      "2026-10-22 REF: ws-newson-2003 authors: co-author first names are in no source (Europe PMC, REF 2026-10-22 00:04 UTC: \"Le Maréchal K\", \"David C\"; OpenAlex names only Elizabeth Newson), so initials as published — REF (H2 S-01c)",
      "2026-10-22 REF: ws-woods-2020 openAccess true -> false and oaUrl removed: the only free copy is on openresearch.lsbu.ac.uk, whose TLS certificate expired on 2 Jun 2026 (openssl, REF 2026-10-22 00:01 UTC; browsers show a security warning), and Wiley shows no free access (browser 00:01 UTC) — audit pass 2 P2.10 NOT VERIFIABLE (res-woods-2020), changed to MISLABELLED by REF (H2 S-08b)"
    ]
  },
  "items": [
    {
      "id": "ws-newson-2003",
      "title": "Pathological demand avoidance syndrome: a necessary distinction within the pervasive developmental disorders",
      "url": "https://doi.org/10.1136/adc.88.7.595",
      "publisher": "Archives of Disease in Childhood, 88(7), 595–600",
      "authors": [
        "Elizabeth Newson",
        "K Le Maréchal",
        "C David"
      ],
      "year": 2003,
      "doi": "10.1136/adc.88.7.595",
      "openAccess": true,
      "oaUrl": "https://pmc.ncbi.nlm.nih.gov/articles/PMC1763174/",
      "plain": "The first academic paper on PDA. Proposed PDA as a separate group within the pervasive developmental disorders, using 150 cases, a random sample of 50 children and a follow-up of 18 young adults. Reported an equal sex ratio and avoidance using social strategies in every child.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: title, journal, volume 88 issue 7 pages 595-600, July 2003. Abstract read on Europe PMC. OpenAlex: open access. | 2026-10-22 REF: free copy is PubMed Central PMC1763174"
      }
    },
    {
      "id": "ws-onions-2014-edaq",
      "title": "Development of the ‘Extreme Demand Avoidance Questionnaire’ (EDA-Q): preliminary observations on a trait measure for Pathological Demand Avoidance",
      "url": "https://doi.org/10.1111/jcpp.12149",
      "publisher": "Journal of Child Psychology and Psychiatry, 55(7), 758–768",
      "authors": [
        "Elizabeth O'Nions",
        "Phil Christie",
        "Judith Gould",
        "Essi Viding",
        "Francesca Happé"
      ],
      "year": 2014,
      "doi": "10.1111/jcpp.12149",
      "openAccess": false,
      "plain": "Built and tested the EDA-Q, a parent-report questionnaire, with 326 parents of children aged 5 to 17. Scores were higher in children identified with PDA than in every comparison group. Girls scored higher than boys. The authors call PDA contentious and say the questionnaire is for research, not diagnosis.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online 7 Oct 2013, print July 2014, vol 55 issue 7 pp 758-768. Abstract read on Crossref."
      }
    },
    {
      "id": "ws-onions-2014-profile",
      "title": "Pathological demand avoidance: Exploring the behavioural profile",
      "url": "https://doi.org/10.1177/1362361313481861",
      "publisher": "Autism, 18(5), 538–544",
      "authors": [
        "Elizabeth O'Nions",
        "Essi Viding",
        "Corina U. Greven",
        "Angelica Ronald",
        "Francesca Happé"
      ],
      "year": 2014,
      "doi": "10.1177/1362361313481861",
      "openAccess": true,
      "oaUrl": "https://journals.sagepub.com/doi/pdf/10.1177/1362361313481861",
      "plain": "Compared 25 children described as PDA with 39 autistic children and 28 children with conduct problems, using parent reports. The PDA group had autistic traits and peer problems like the autism group, antisocial traits approaching the conduct-problems group, and emotional symptoms higher than both. Notes that reward-based approaches are described as not working in PDA.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online Oct 2013, print July 2014, vol 18 issue 5 pp 538-544. Abstract read on Crossref. OpenAlex: open access. | 2026-10-21 P1F: abstract re-read on OpenAlex (antisocial traits approaching the conduct-problems group)."
      }
    },
    {
      "id": "ws-onions-2016-disco",
      "title": "Identifying features of ‘pathological demand avoidance’ using the Diagnostic Interview for Social and Communication Disorders (DISCO)",
      "url": "https://doi.org/10.1007/s00787-015-0740-2",
      "publisher": "European Child & Adolescent Psychiatry, 25(4), 407–419",
      "authors": [
        "Elizabeth O'Nions",
        "Judith Gould",
        "Phil Christie",
        "Christopher Gillberg",
        "Essi Viding",
        "Francesca Happé"
      ],
      "year": 2016,
      "doi": "10.1007/s00787-015-0740-2",
      "openAccess": true,
      "oaUrl": "https://link.springer.com/content/pdf/10.1007/s00787-015-0740-2.pdf",
      "plain": "Looked for PDA features inside a standard autism diagnostic interview (the DISCO). Cited on this page only for its existence and date; no abstract was available on Crossref, so no findings are quoted from it.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online July 2015, print April 2016, vol 25 issue 4 pp 407-419. No abstract on Crossref. OpenAlex: open access."
      }
    },
    {
      "id": "ws-onions-2018-dimensions",
      "title": "Dimensions of difficulty in children reported to have an autism spectrum diagnosis and features of extreme/‘pathological’ demand avoidance",
      "url": "https://doi.org/10.1111/camh.12242",
      "publisher": "Child and Adolescent Mental Health, 23(3), 220–227",
      "authors": [
        "Elizabeth O'Nions",
        "Essi Viding",
        "Caroline Floyd",
        "Emma Quinlan",
        "Connie Pidgeon",
        "Judith Gould",
        "Francesca Happé"
      ],
      "year": 2018,
      "doi": "10.1111/camh.12242",
      "openAccess": true,
      "oaUrl": "https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/camh.12242",
      "plain": "Interviews with parents of 26 autistic children with substantial PDA features. Avoidance was better described as ‘strategic’ than ‘manipulative’. Parents saw a negative emotional response to demands, but also phobias, novelty and uncertainty, as triggers for extreme behaviour.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online Oct 2017, print Sept 2018, vol 23 issue 3 pp 220-227. Abstract read on Crossref. OpenAlex: open access."
      }
    },
    {
      "id": "ws-green-2018",
      "title": "Pathological Demand Avoidance: symptoms but not a syndrome",
      "url": "https://doi.org/10.1016/S2352-4642(18)30044-0",
      "publisher": "The Lancet Child & Adolescent Health, 2(6), 455–464",
      "authors": [
        "Jonathan Green",
        "Michael Absoud",
        "Victoria Grahame",
        "Osman Malik",
        "Emily Simonoff",
        "Ann Le Couteur",
        "Gillian Baird"
      ],
      "year": 2018,
      "doi": "10.1016/S2352-4642(18)30044-0",
      "openAccess": true,
      "oaUrl": "https://research.manchester.ac.uk/en/publications/cb03c688-6b15-4d30-8a80-ed6d71a33c81",
      "plain": "A review by UK child psychiatrists and paediatricians arguing, as its title says, that demand avoidance describes symptoms but has not been shown to be a separate syndrome. Cited here for the critical side of the debate; only its title, authors and journal were checked.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: June 2018, vol 2 issue 6 pp 455-464. No abstract on Crossref. OpenAlex: open access copy at the University of Manchester."
      }
    },
    {
      "id": "ws-onions-2018-letter",
      "title": "Demand avoidance is not necessarily defiance",
      "url": "https://doi.org/10.1016/S2352-4642(18)30171-8",
      "publisher": "The Lancet Child & Adolescent Health, 2(7), e14",
      "authors": [
        "Elizabeth O'Nions",
        "Francesca Happé",
        "Essi Viding",
        "Judith Gould",
        "Ilse Noens"
      ],
      "year": 2018,
      "doi": "10.1016/S2352-4642(18)30171-8",
      "openAccess": true,
      "oaUrl": "https://lirias.kuleuven.be/retrieve/2a8bb468-864e-4500-a663-7b39c5b3cf6a",
      "plain": "A letter replying to Green and colleagues. Cited for its title and existence only: it shows that researchers disagree in print about whether demand avoidance should be read as defiance.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: July 2018, vol 2 issue 7 page e14. No abstract on Crossref."
      }
    },
    {
      "id": "ws-green-2018-reply",
      "title": "Demand avoidance is not necessarily defiance – Authors' reply",
      "url": "https://doi.org/10.1016/S2352-4642(18)30221-9",
      "publisher": "The Lancet Child & Adolescent Health, 2(9), e21",
      "authors": [
        "Jonathan Green",
        "Michael Absoud",
        "Victoria Grahame",
        "Osman Malik",
        "Emily Simonoff",
        "Ann Le Couteur",
        "Gillian Baird"
      ],
      "year": 2018,
      "doi": "10.1016/S2352-4642(18)30221-9",
      "openAccess": false,
      "plain": "The authors' reply to the letter above. Cited for existence and date only.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: Sept 2018, vol 2 issue 9 page e21."
      }
    },
    {
      "id": "ws-green-2024",
      "title": "Pathological demand avoidance: further research is required",
      "url": "https://doi.org/10.1016/S2352-4642(24)00189-5",
      "publisher": "The Lancet Child & Adolescent Health, 8(10), e12",
      "authors": [
        "Jonathan Green"
      ],
      "year": 2024,
      "doi": "10.1016/S2352-4642(24)00189-5",
      "openAccess": false,
      "plain": "A 2024 letter whose title says the debate is still open. Cited for its title and date only.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: Oct 2024, vol 8 issue 10 page e12. No abstract on Crossref."
      }
    },
    {
      "id": "ws-egan-2019",
      "title": "The Measurement of Adult Pathological Demand Avoidance Traits",
      "url": "https://doi.org/10.1007/s10803-018-3722-7",
      "publisher": "Journal of Autism and Developmental Disorders, 49(2), 481–494",
      "authors": [
        "Vincent Egan",
        "Omer Linenberg",
        "Elizabeth O'Nions"
      ],
      "year": 2019,
      "doi": "10.1007/s10803-018-3722-7",
      "openAccess": true,
      "oaUrl": "https://link.springer.com/content/pdf/10.1007/s10803-018-3722-7.pdf",
      "plain": "Adapted the EDA-Q for adults (the EDA-QA). Cited here to show that PDA traits have been measured in adults, not only children. Title, authors and journal checked; no abstract was available on Crossref.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online Aug 2018, print Feb 2019, vol 49 issue 2 pp 481-494. OpenAlex: open access."
      }
    },
    {
      "id": "ws-stuart-2020",
      "title": "Intolerance of uncertainty and anxiety as explanatory frameworks for extreme demand avoidance in children and adolescents",
      "url": "https://doi.org/10.1111/camh.12336",
      "publisher": "Child and Adolescent Mental Health, 25(2), 59–67",
      "authors": [
        "Lisa Stuart",
        "Victoria Grahame",
        "Emma Honey",
        "Mark Freeston"
      ],
      "year": 2020,
      "doi": "10.1111/camh.12336",
      "openAccess": false,
      "plain": "An online survey of 214 families (69 children with a clinical PDA diagnosis, 151 with parent-identified features) plus 11 follow-up interviews. Demand avoidance could be understood in part as an attempt to increase certainty and predictability to ease rising anxiety. Three patterns (control behaviour, withdrawal into fantasy, meltdown) were all predicted by intolerance of uncertainty.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online 22 May 2019, print May 2020, vol 25 issue 2 pp 59-67. Abstract read on Crossref."
      }
    },
    {
      "id": "ws-woods-2020",
      "title": "Commentary: Demand Avoidance Phenomena, a manifold issue? Intolerance of uncertainty and anxiety as explanatory frameworks for extreme demand avoidance in children and adolescents – a commentary on Stuart et al. (2020)",
      "url": "https://doi.org/10.1111/camh.12368",
      "publisher": "Child and Adolescent Mental Health, 25(2), 68–70",
      "authors": [
        "Richard Woods"
      ],
      "year": 2020,
      "doi": "10.1111/camh.12368",
      "openAccess": false,
      "plain": "An autistic researcher's commentary. Proposes ‘Demand Avoidance Phenomena’ as a neutral term, notes the ongoing controversy, and points to findings that many people no longer meet the threshold in adulthood. Asks for the Stuart study to be replicated.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online Jan 2020, print May 2020, vol 25 issue 2 pp 68-70. Abstract read on Crossref. | 2026-10-21 lead re-check: OpenAlex is_oa=true (green). | 2026-10-22 REF: free copy removed; the LSBU repository certificate expired on 2 Jun 2026 and the Wiley version is not free"
      }
    },
    {
      "id": "ws-grahame-2020",
      "title": "Response: Demand Avoidance Phenomena: a manifold issue? Intolerance of uncertainty and anxiety as explanatory frameworks for extreme demand avoidance in children and adolescents – a response to Woods (2020)",
      "url": "https://doi.org/10.1111/camh.12376",
      "publisher": "Child and Adolescent Mental Health, 25(2), 71–73",
      "authors": [
        "Victoria Grahame",
        "Lisa Stuart",
        "Emma Honey",
        "Mark Freeston"
      ],
      "year": 2020,
      "doi": "10.1111/camh.12376",
      "openAccess": false,
      "plain": "The study authors' reply. They acknowledge the controversy, say research is scarce and methods need to improve, and argue that anxiety is a major risk for later mental-health difficulties, so support should target what drives it.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online March 2020, print May 2020, vol 25 issue 2 pp 71-73. Abstract read on Crossref."
      }
    },
    {
      "id": "ws-kildahl-2021",
      "title": "Pathological demand avoidance in children and adolescents: A systematic review",
      "url": "https://doi.org/10.1177/13623613211034382",
      "publisher": "Autism, 25(8), 2162–2176",
      "authors": [
        "Arvid N. Kildahl",
        "Sissel B. Helverschou",
        "Anne L. Rysstad",
        "Elisabeth Wigaard",
        "Jane M. A. Hellerud",
        "Linn B. Ludvigsen",
        "Patricia Howlin"
      ],
      "year": 2021,
      "doi": "10.1177/13623613211034382",
      "openAccess": true,
      "oaUrl": "https://doi.org/10.1177/13623613211034382",
      "plain": "A systematic review that found 13 peer-reviewed studies. Most participants were autistic; almost all studies relied on parent report; identification traced back to Newson's criteria; the measures had limits; links with anxiety were reported but few studies examined anxiety alongside PDA. Concludes PDA remains controversial and the evidence is limited.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online 28 July 2021, print Nov 2021, vol 25 issue 8 pp 2162-2176. Abstract read on Crossref. OpenAlex: open access."
      }
    },
    {
      "id": "ws-gore-langton-2016",
      "title": "Mapping the educational experiences of children with pathological demand avoidance",
      "url": "https://doi.org/10.1111/1471-3802.12081",
      "publisher": "Journal of Research in Special Educational Needs, 16(4), 254–263",
      "authors": [
        "Emma Gore Langton",
        "Norah Frederickson"
      ],
      "year": 2016,
      "doi": "10.1111/1471-3802.12081",
      "openAccess": false,
      "plain": "A questionnaire completed by 42 parents. The children had high levels of difficulty and support at school, high rates of exclusion and placement breakdown, and only 48% were in mainstream education at the time.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online Jan 2015, print Oct 2016, vol 16 issue 4 pp 254-263. Abstract read on Crossref."
      }
    },
    {
      "id": "ws-doyle-kenny-2023",
      "title": "Mapping experiences of pathological demand avoidance in Ireland",
      "url": "https://doi.org/10.1111/1471-3802.12579",
      "publisher": "Journal of Research in Special Educational Needs, 23(1), 52–61",
      "authors": [
        "Alison Doyle",
        "Neil Kenny"
      ],
      "year": 2023,
      "doi": "10.1111/1471-3802.12579",
      "openAccess": true,
      "oaUrl": "https://doi.org/10.1111/1471-3802.12579",
      "plain": "A national mixed-methods study in Ireland: 264 parents, 9 partners, 6 PDA people and 54 practitioners. Found that a flexible, informed and individualised approach to assessment and support is essential, and that education and health systems were disconnected.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online Nov 2022, print Jan 2023, vol 23 issue 1 pp 52-61. Abstract read on Crossref. OpenAlex: open access."
      }
    },
    {
      "id": "ws-kenny-doyle-2024",
      "title": "A phenomenological exploration of the lived experience of adults experiencing pathological demand avoidance",
      "url": "https://doi.org/10.1177/27546330241277075",
      "publisher": "Neurodiversity, vol 2",
      "authors": [
        "Neil Kenny",
        "Alison Doyle"
      ],
      "year": 2024,
      "doi": "10.1177/27546330241277075",
      "openAccess": true,
      "oaUrl": "https://doi.org/10.1177/27546330241277075",
      "plain": "Adults in Ireland who are diagnosed with or identify as PDA described pervasive anxiety, difficulty negotiating life's demands, the importance of trust and safety, and flexibility in education. They asked for greater autonomy and flexibility of support across life.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online Aug 2024, journal Neurodiversity vol 2. Abstract read on Crossref. OpenAlex: open access."
      }
    },
    {
      "id": "ws-moore-2020",
      "title": "Pathological demand avoidance: What and who are being pathologised and in whose interests?",
      "url": "https://doi.org/10.1177/2043610619890070",
      "publisher": "Global Studies of Childhood, 10(1), 39–52",
      "authors": [
        "Allison Moore"
      ],
      "year": 2020,
      "doi": "10.1177/2043610619890070",
      "openAccess": true,
      "oaUrl": "https://research.edgehill.ac.uk/en/publications/8ab71f41-8ec6-4a8d-b3c5-7a1a138b14fb",
      "plain": "A critical article arguing for caution about the PDA label. Draws on autistic scholars who prefer ‘rational demand avoidance’, an understandable response to one's circumstances, and asks whether children's, and especially girls', resistance is being pathologised.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "note": "Crossref: online 28 Feb 2020, print March 2020, vol 10 issue 1 pp 39-52. Abstract read on Crossref. OpenAlex: open access."
      }
    },
    {
      "id": "ws-pdas-what-is-pda",
      "title": "What is PDA?",
      "url": "https://www.pdasociety.org.uk/what-is-pda/",
      "publisher": "PDA Society (UK charity)",
      "plain": "PDA as a profile found in some autistic people: a determined avoidance of everyday demands, including things the person enjoys; a sociable surface that can hide deeper difficulties; social strategies to avoid demands; intense emotions; interests often centred on people. Says PDA is not a diagnosis in itself and that recognition by clinicians varies.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200). Headings: What is PDA?, PDA traits, PDA as a profile of autism, Is PDA a diagnosis?"
      }
    },
    {
      "id": "ws-pdas-demand-avoidance",
      "title": "About demand avoidance",
      "url": "https://www.pdasociety.org.uk/what-is-pda/about-demand-avoidance/",
      "publisher": "PDA Society (UK charity)",
      "plain": "Demands can raise anxiety to the point of panic. Lists fight, flight, freeze and fawn responses. Demands include requests, expectations, internal ‘shoulds’, things the person wants to do, praise, social norms and bodily needs such as eating and sleeping. What a person can manage changes with their capacity and can fall across the day. PDAers often describe it as ‘can't, not won't’.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200). Headings: About demand avoidance, What are demands?, What helps?"
      }
    },
    {
      "id": "ws-pdas-traits",
      "title": "PDA traits",
      "url": "https://www.pdasociety.org.uk/what-is-pda/pda-traits/",
      "publisher": "PDA Society (UK charity)",
      "plain": "A deep need to keep personal autonomy; hierarchies can feel like threats; social strategies (distraction, negotiation, flattery, role play, withdrawing, switching focus) are automatic stress responses, not deliberate manipulation; sudden mood swings (Newson's ‘emotional lability’); internalisers and externalisers; ‘demand stacking’; masking; interests focused on people; a ‘Positive PDA’ list of strengths described by PDAers.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200). Headings: Relationship style, Social strategies, Special interests, Emotional regulation, Positive PDA."
      }
    },
    {
      "id": "ws-pdas-diagnosis",
      "title": "PDA and diagnosis",
      "url": "https://www.pdasociety.org.uk/what-is-pda/pda-and-diagnosis/",
      "publisher": "PDA Society (UK charity)",
      "plain": "PDA is not a stand-alone diagnosis; a formal assessment is an autism assessment, and the clinician may or may not name PDA. Reports may say ‘ASD with a PDA profile’, ‘a demand avoidant profile’ or ‘extreme/pervasive demand avoidance’; wording differs between NHS trusts. The EDA-Q is a research guide, not a diagnostic tool. Support at school and work does not depend on a diagnosis.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200). Cites NICE CG128, CG142 and QS51."
      }
    },
    {
      "id": "ws-pdas-origins",
      "title": "Origins of the term PDA",
      "url": "https://www.pdasociety.org.uk/research-professional-practice/origins-of-term-pda/",
      "publisher": "PDA Society (UK charity)",
      "plain": "The term was introduced in the 1980s by developmental psychologist Prof Elizabeth Newson for children at her clinic; the first academic paper came from her team in 2003. ‘Pathological’ has drawn criticism, so alternatives such as Extreme Demand Avoidance and Persistent Drive for Autonomy have been suggested, while some people feel the original term best reflects their experience.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200)."
      }
    },
    {
      "id": "ws-pdas-not-pda",
      "title": "What if it's not PDA?",
      "url": "https://www.pdasociety.org.uk/what-is-pda/what-if-its-not-pda/",
      "publisher": "PDA Society (UK charity)",
      "plain": "Demand avoidance can also come from trauma, language or cognitive differences (including executive-function differences in ADHD), sensory sensitivities, burnout, or anxiety and depression. These can overlap and may need different support.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200). Headings: Trauma, Language or cognitive differences, Sensory sensitivities, Burnout, Anxiety or depression."
      }
    },
    {
      "id": "ws-pdas-being-misunderstood",
      "title": "Being Misunderstood – 2018 survey (report PDF)",
      "url": "https://www.pdasociety.org.uk/wp-content/uploads/2025/05/BeingMisunderstood.pdf",
      "publisher": "PDA Society (UK charity)",
      "year": 2018,
      "plain": "An online survey run for two weeks in March 2018 with 1,445 respondents (parents, professionals, PDA adults and their partners or family). The report states that 70% of 969 young people were not able to tolerate their school environment or were home educated, and that 49% of 768 young people with a diagnosis had one that included PDA or a demand-avoidant profile. A self-selected survey, not a representative sample.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Summary page opened (HTTP 200, title 'Being misunderstood – 2018 survey'); PDF downloaded (8 pages) and the figures read from its executive summary and education section. | 2026-10-22 lead re-read of the PDF Key findings: 70% of 969 young people could not tolerate their school environment or were home educated; 71% of 79 adults and 70% of 1194 parents found a lack of acceptance or understanding of PDA a barrier to support. 1,445 respondents in total."
      }
    },
    {
      "id": "ws-nas-demand-avoidance",
      "title": "Demand avoidance",
      "url": "https://www.autism.org.uk/advice-and-guidance/behaviour/demand-avoidance",
      "publisher": "National Autistic Society (UK charity)",
      "plain": "Demand avoidance as a persistent and marked resistance to demands seen in some autistic people, covering direct instructions, internal demands such as hunger, and implied expectations. Forms include excuses, distraction, refusal, withdrawal and, usually as a last resort or panic response, aggression. PDA is not in the ICD or DSM; there is no standard UK assessment. The research base is small and mostly low quality; prevalence is unknown. Lists ‘Persistent Drive for Autonomy’ as a suggested alternative name.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200; the /topics/behaviour/ address redirects here). No publication date shown on the page."
      }
    },
    {
      "id": "ws-nas-masking",
      "title": "Autistic people and masking",
      "url": "https://www.autism.org.uk/advice-and-guidance/professional-practice/autistic-masking",
      "publisher": "National Autistic Society (UK charity); author Dr Hannah Belcher",
      "year": 2022,
      "plain": "Masking (camouflaging) means hiding or disguising parts of yourself to fit in. It uses up vital resources and is linked in studies to exhaustion, burnout, anxiety and depression, and to late diagnosis.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200). Published 7 July 2022."
      }
    },
    {
      "id": "ws-pdana-what-is-pda",
      "title": "What is PDA?",
      "url": "https://pdanorthamerica.org/what-is-pda/",
      "publisher": "PDA North America (US non-profit)",
      "plain": "Describes PDA as a nervous-system difference in which sensitive nervous systems easily go into fight, flight, fawn or freeze states, with a strong need for autonomy and control. Says avoidance is a matter of ‘can't’ not ‘won't’, that rewards and consequences often backfire, that many PDAers mask, and that PDA is not a distinct diagnosis in the DSM-5. Lists strengths such as imagination, unorthodox thinking and expressive empathy.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200). Uses both ‘Persistent’ and ‘Pervasive’ Drive for Autonomy on the same page."
      }
    },
    {
      "id": "ws-pdana-odd",
      "title": "What is the difference between “Oppositional Defiant Disorder” and Pathological Demand Avoidance?",
      "url": "https://pdanorthamerica.org/what-is-the-difference-between-oppositional-defiant-disorder-and-pathological-demand-avoidance/",
      "publisher": "PDA North America; written by a PDA adult, not a clinician",
      "plain": "A lived-experience article: ODD is described around authority figures and stress or trauma; PDA avoidance is triggered by any loss of autonomy, control or equality, including with peers and objects, and is present from early life. Argues that reward-and-consequence systems can increase distress for PDAers and that misdiagnosis as ODD is common. Opinion, not research.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "note": "Opened and read in full (HTTP 200). No publication date shown. Author describes herself as a PDA-er and not a clinician."
      }
    },
    {
      "id": "ws-fricker-2023",
      "title": "Can't Not Won't: A Story About A Child Who Couldn't Go To School",
      "url": "https://uk.jkp.com/products/cant-not-wont",
      "publisher": "Jessica Kingsley Publishers",
      "authors": [
        "Eliza Fricker"
      ],
      "year": 2023,
      "isbn": "9781839975202",
      "plain": "An illustrated parent's account of a child who could not go to school, published 21 February 2023 (160 pages). Cited for the phrase in its title; the publisher's description does not say where the phrase began.",
      "verified": {
        "on": "2026-10-21",
        "method": "http",
        "note": "Publisher page opened (HTTP 200): title, author, date 21 Feb 2023, ISBN 9781839975202, 160 pages."
      }
    },
    {
      "id": "ws-greene-kids-do-well",
      "title": "Lives in the Balance (Dr Ross Greene): “Kids do well if they can.”",
      "url": "https://livesinthebalance.org/",
      "publisher": "Lives in the Balance (US non-profit)",
      "plain": "The home page of Dr Ross Greene's organisation carries his phrase ‘Kids do well if they can’ and describes his Collaborative & Proactive Solutions model. Cited as the wider idea behind ‘can't, not won't’; it is not a PDA-specific source.",
      "verified": {
        "on": "2026-10-21",
        "method": "http",
        "note": "Opened (HTTP 200); the quote appears on the page attributed to Dr Ross Greene."
      }
    },
    {
      "id": "ws-scripps-restraint-collapse",
      "title": "Why kids melt down after school after feeling fine all day",
      "url": "https://scrippsnews.com/stories/why-kids-melt-down-after-school-after-feeling-fine-all-day/",
      "publisher": "Scripps News (syndicated from Simplemost); by Bridget Sharkey",
      "plain": "A news feature crediting parenting educator Andrea Loewen Nair, author of ‘Taming Tantrums’, with the idea of ‘after-school restraint collapse’: children hold themselves together all day and let go at home, where it is safe. A popular-press source, not research; the original article was not found.",
      "verified": {
        "on": "2026-10-21",
        "method": "http",
        "note": "Opened and read (HTTP 200). No publication date shown."
      }
    },
    {
      "id": "ws-company-2026",
      "title": "A Systematic Review of Pathological Demand Avoidance (PDA): A Veritable Diagnosis or a Case of Circular Logic?",
      "url": "https://doi.org/10.1007/s10803-026-07432-y",
      "publisher": "Journal of Autism and Developmental Disorders",
      "authors": [
        "Dylan Company",
        "Joe Anthony Rotella"
      ],
      "year": 2026,
      "doi": "10.1007/s10803-026-07432-y",
      "openAccess": true,
      "plain": "Searched three databases and found 12 studies on identifying PDA (nine with children). Most data came from questionnaires or surveys, the EDA-Q and DISCO were used inconsistently, and all 12 were judged at high risk of bias. The authors say this raises circular logic and makes it hard to support the tools, let alone PDA as a condition. It judges the evidence for a diagnosis, not whether the difficulties are real.",
      "verified": {
        "on": "2026-10-21",
        "method": "openalex",
        "status": 200,
        "note": "OpenAlex 200: title, journal and 2026 matched, open access; abstract read 22:53 UTC (P1F)."
      }
    },
    {
      "id": "ws-haire-2024",
      "title": "Methods of studying pathological demand avoidance in children and adolescents: a scoping review",
      "url": "https://doi.org/10.3389/feduc.2024.1230011",
      "publisher": "Frontiers in Education",
      "authors": [
        "Lauren Haire",
        "Jennifer Symonds",
        "Joyce Senior",
        "Giulio D'Urso"
      ],
      "year": 2024,
      "doi": "10.3389/feduc.2024.1230011",
      "openAccess": true,
      "plain": "Mapped 22 studies of PDA in children and teens: 21 from the UK and one from the Faroe Islands. Samples were not representative, half were one-off quantitative snapshots, and few studies looked at where PDA comes from or at support. The EDA-Q and DISCO were the main measures.",
      "verified": {
        "on": "2026-10-21",
        "method": "openalex",
        "status": 200,
        "note": "OpenAlex 200: title, journal and 2024 matched, open access; abstract read 22:53 UTC (P1F)."
      }
    },
    {
      "id": "ws-gillberg-2015",
      "title": "Extreme (“pathological”) demand avoidance in autism: a general population study in the Faroe Islands",
      "url": "https://doi.org/10.1007/s00787-014-0647-3",
      "publisher": "European Child & Adolescent Psychiatry, 24(8), 979–984",
      "authors": [
        "Christopher Gillberg",
        "I. Carina Gillberg",
        "Lucy Thompson",
        "Rannvá Biskupstø",
        "Eva Billstedt"
      ],
      "year": 2015,
      "doi": "10.1007/s00787-014-0647-3",
      "openAccess": false,
      "plain": "Screened all 15 to 24 year olds in the Faroe Islands for autism. Of 50 autistic young people whose parents were interviewed, 9 had possible PDA in childhood, but only 1 of the 9 still fully met the criteria at the time of the study. Very small numbers, and childhood features came from parents looking back.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "status": 200,
        "note": "Crossref 200 (title, journal, online November 2014). Abstract read on PubMed (PMID 25398390), 22:54 UTC (P1F)."
      }
    },
    {
      "id": "ws-onions-eaton-2020",
      "title": "Extreme/‘pathological’ demand avoidance: an overview",
      "url": "https://doi.org/10.1016/j.paed.2020.09.002",
      "publisher": "Paediatrics and Child Health",
      "authors": [
        "Elizabeth O'Nions",
        "Judith Eaton"
      ],
      "year": 2020,
      "doi": "10.1016/j.paed.2020.09.002",
      "openAccess": false,
      "plain": "A clinical overview for paediatricians. Describes how anxiety-driven avoidance of routine demands can develop in autistic children, and recommends strategies that avoid strengthening habits of avoidance and let new, mutually rewarding routines grow, which may gradually increase tolerance of demands.",
      "verified": {
        "on": "2026-10-21",
        "method": "crossref",
        "status": 200,
        "note": "Crossref 200 (title, journal, December 2020). Abstract read via the Semantic Scholar API, 22:54 UTC (P1F); full text paywalled, not read."
      }
    },
    {
      "id": "ws-green-2020",
      "title": "Commentary: Anxiety and behaviour in and beyond ASD; does the idea of ‘PDA’ really help? – a commentary on Stuart et al. (2020)",
      "url": "https://doi.org/10.1111/camh.12379",
      "publisher": "Child and Adolescent Mental Health",
      "authors": [
        "Jonathan Green"
      ],
      "year": 2020,
      "doi": "10.1111/camh.12379",
      "openAccess": false,
      "plain": "A commentary on the 2020 uncertainty study. Accepts that many autistic children struggle with anxiety, distress and avoidance, sometimes extremely. Calls PDA's status controversial and poorly evidenced and the study's sampling circular, but says its ideas about uncertainty and anxiety should be tested in representative, long-term and intervention studies.",
      "verified": {
        "on": "2026-10-21",
        "method": "openalex",
        "status": 200,
        "note": "OpenAlex 200: title, journal and 2020 matched; abstract read 22:53 UTC (P1F)."
      }
    },
    {
      "id": "ws-egan-2020",
      "title": "Individual differences, ADHD, adult pathological demand avoidance, and delinquency",
      "url": "https://doi.org/10.1016/j.ridd.2020.103733",
      "publisher": "Research in Developmental Disabilities",
      "authors": [
        "Vincent Egan",
        "Elinor Bull",
        "Grace Trundle"
      ],
      "year": 2020,
      "doi": "10.1016/j.ridd.2020.103733",
      "openAccess": false,
      "plain": "A self-report survey of 126 community adults. ADHD traits were strongly linked to PDA-trait scores, while the link with autism traits was small; attention difficulties, antagonism and low emotional stability together explained about 65% of the scores. Not people diagnosed with PDA.",
      "verified": {
        "on": "2026-10-21",
        "method": "openalex",
        "status": 200,
        "note": "OpenAlex 200 (title, journal, 2020); abstract read via the Semantic Scholar API, 22:54 UTC (P1F)."
      }
    },
    {
      "id": "ws-wtfpda-2024",
      "title": "When Declarative Language Doesn't Work",
      "url": "https://www.wtfpda.com/p/when-declarative-language-doesnt-work",
      "publisher": "WTF PDA?! (Ariel G., a PDA adult)",
      "authors": [
        "Ariel G."
      ],
      "year": 2024,
      "plain": "A PDA adult writer on why hidden demands backfire. Asked a group of PDA adults, none preferred declarative language, and many found hidden demands manipulative. Argues that 'working' should mean more autonomy and trust, not compliance, and that autonomy-seeking is not a fault to override.",
      "verified": {
        "on": "2026-10-21",
        "method": "http",
        "status": 200,
        "note": "Opened 22:55 UTC (P1F); dated 11 March 2024; the author writes as a PDAer."
      }
    },
    {
      "id": "ws-nhs-autism-assessments",
      "title": "Autism assessments",
      "url": "https://www.nhs.uk/conditions/autism/assessments/",
      "publisher": "NHS",
      "plain": "How to get an autism assessment: speak to a GP; for children the school may need to make the referral, or a health visitor if the child is not yet at school. A GP or education professional can say what support is available while you wait.",
      "verified": {
        "on": "2026-10-21",
        "method": "official-site",
        "status": 200,
        "note": "Opened 23:02 UTC (P1F); page last reviewed 6 May 2026."
      }
    }
  ]
}