‘A storm of post-it notes’: Experiences of perceptual capacity in autism and ADHD

This publication is included in the Autistic Autism Scholarship Project. one author of this publication is identified as autistic in the project.

About the autistic author marker

Irvine, B., Elise, F., Brinkert, J., Poole, D., Farran, E. K., Milne, E., Scerif, G., Crane, L., & Remington, A. (2024). ‘A storm of post-it notes’: Experiences of perceptual capacity in autism and ADHD. Neurodiversity, 2. https://doi.org/10.1177/27546330241229004

Publication date: 1 Jan 2024 Added to AutiHub: 12 Sep 2026 Type: Article Article language: English

This publication is integrated into AutiHub through:

Authors

Publication authors
9
Publication authors identified as autistic
1 / 9 (11.1%)

Abstract

Lab-based tasks suggest autistic people have increased perceptual capacity (i.e. process more information at any one time) compared to non-autistic people. Here, we explored whether this increase is reflected in autistic people's day-to-day perceptual experiences and, when compared to those with ADHD/neurotypical people, whether commonalities/divergences in these experiences can illuminate differences between neurotypes. UK-based adults (108 autistic, 40 with ADHD, 79 autistic with ADHD, 85 neurotypical) completed an online survey about experiences of attention and distraction. Responses were analysed using thematic analysis. We found that participants of all neurotypes experienced periods of intense focus. Neurodivergent participants reported experiencing a barrage of information; autistic participants found this overwhelming, whereas those with ADHD referred to overload. This finding may reflect increased perceptual capacity for autistic people (adding ecological validity to previous findings regarding increased autistic perceptual capacity) vs. difficulties maintaining attentional priorities for those with ADHD. While differences between neurodivergent and neurotypical people were evident, discrepancies between experiences of neurodivergent groups were more subtle, suggesting that increased perceptual capacity may extend beyond autism. Consequently, perceptual capacity offers a useful framework to promote better understanding of one's own perceptual experiences, and to guide strategies to ameliorate any challenges encountered.

Bibliography cited by this reference

Cited references are imported from external metadata sources when they are available. The list may be partial.

Cited bibliography overview

These indicators describe the bibliography cited by this publication. An author name is counted each time it appears in one cited reference, so the same person can be counted more than once. Names not yet linked to an author already present in AutiHub are treated as unknown, not as non-autistic. Last computed: 12 Sep 2026 17:55.

Cited references
83
With a DOI
65
Without a DOI, from raw bibliography text
16
8 / 83 (9.6%) cited references include at least one author identified as autistic.
References with data to complete
10 / 83 (12.0%)
References with detected author names
76 / 83 (91.6%)
Without detected author names
7
Without a structured title
10
Without a stable identifier
14
References with raw author names still to review
7
References with external metadata lookup issues
0
These indicators apply to cited references displayed on this page, after technical duplicates have been merged. A reference without a DOI can still support author statistics when a title and author names are available.
Author names detected in the cited bibliography
293
From DOI or external metadata
293
From validated raw bibliography text
0
Raw names already validated
0
Raw names still to review
14
87 / 293 (29.7%) names are linked to an author already present in AutiHub. 206 / 293 (70.3%) names are not yet linked.
Names linked to a person identified as autistic
11 / 293 (3.8%)
Calculated across all author names detected in the cited bibliography. Among names linked to an author already present in AutiHub: 11 / 87 (12.6%). Distinct people identified as autistic: 10 / 246 (4.1%).
  1. Gordon Willis (2004). Cognitive interviewing: A tool for improving questionnaire design . Cognitive interviewing: A tool for improving questionnaire design.
    Type: Article OpenAlex: https://openalex.org/W1564392956
    Crossref OpenAlex
  2. (n.d.). ADDitude Editors. (2022, June 24). Benefits of ADHD / ADD: Love your strengths and abilities. https://www.additudemag.com/slideshows/benefits-of-adhd-to-love/
    Type: Other
    Crossref
  3. Andrew P. Bayliss , Ada Kritikos (2011). Brief Report: Perceptual Load and the Autism Spectrum in Typically Developed Individuals . Journal of Autism and Developmental Disorders, 41(11), 1573-1578. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  4. Catherine Best , Shruti Arora , Fiona Porter , Martin Doherty (2015). The Relationship Between Subthreshold Autistic Traits, Ambiguous Figure Perception and Divergent Thinking . Journal of Autism and Developmental Disorders, 45(12), 4064-4073. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  5. Dima Amso , Gaia Scerif (2015). The attentive brain: insights from developmental cognitive neuroscience . Nature Reviews Neuroscience, 16(10), 606-619. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1038/nrn4025 OpenAlex: https://openalex.org/W1608979225
    Crossref OpenAlex OpenCitations
  6. Anna Remington , John Swettenham , Ruth Campbell , Mike Coleman (2009). Selective Attention and Perceptual Load in Autism Spectrum Disorder . Psychological Science, 20(11), 1388-1393. SAGE Publications.
    Crossref OpenCitations
  7. Grandin T. (1996). Thinking in pictures: And other reports from my life with autism . Choice Reviews Online, 33(09), 33-5387-33-5387. American Library Association.
    Crossref OpenAlex
  8. Beardon D. L. (2016). Autism & Asperger syndrome in adults . Autism & Asperger syndrome in adults.
    Type: Other
    Crossref
  9. Nick Berggren , Thomas Blonievsky , Nazanin Derakshan (2015). Enhanced visual detection in trait anxiety. Emotion, 15(4), 477-483. American Psychological Association (APA).
    Type: Article DOI: 10.1037/a0039449 OpenAlex: https://openalex.org/W1866376036
    Crossref OpenAlex OpenCitations
  10. Sophie Forster , Nilli Lavie (2007). High Perceptual Load Makes Everybody Equal . Psychological Science, 18(5), 377-381. SAGE Publications.
    Crossref OpenAlex OpenCitations
  11. Toshihiko Maekawa , Shozo Tobimatsu , Naoko Inada , Naoya Oribe , Toshiaki Onitsuka , Shigenobu Kanba et al. (2011). Top-down and bottom-up visual information processing of non-social stimuli in high-functioning autism spectrum disorder . Research in Autism Spectrum Disorders, 5(1), 201-209. Elsevier BV.
    Crossref OpenAlex OpenCitations
  12. Sven Bölte , D. Hubl , T. Dierks , Martin Holtmann , F. Poustka (2008). An fMRI-study of locally oriented perception in autism: altered early visual processing of the block design test . Journal of Neural Transmission, 115(3), 545-552. Springer Science and Business Media LLC.
    OpenCitations
  13. Roi Treister , Elon Eisenberg , Naor Demeter , Dorit Pud (2015). Alterations in Pain Response are Partially Reversed by Methylphenidate (Ritalin) in Adults with Attention Deficit Hyperactivity Disorder (ADHD ) . Pain Practice, 15(1), 4-11. Wiley.
    Crossref OpenAlex OpenCitations
  14. Sven Bölte , D. Hubl , T. Dierks , Martin Holtmann , F. Poustka (2008). An fMRI-study of locally oriented perception in autism: altered early visual processing of the block design test . Journal of Neural Transmission, 115(3), 545-552. Springer Science and Business Media LLC.
    Crossref OpenAlex
  15. A. B. Silverstein (1975). Validity of WISC-R short forms . Journal of Clinical Psychology, 31(4), 696-697. Wiley.
    Crossref OpenAlex OpenCitations
  16. Cynthia L. Huang‐Pollock , Joel T. Nigg , Thomas H. Carr (2005). Deficient attention is hard to find: applying the perceptual load model of selective attention to attention deficit hyperactivity disorder subtypes . Journal of Child Psychology and Psychiatry, 46(11), 1211-1218. Wiley.
    Crossref OpenAlex OpenCitations
  17. Virginia Braun , Victoria Clarke (2022). Thematic Analysis . In Encyclopedia of Quality of Life and Well-Being Research (pp. 1-7). Springer International Publishing.
    Crossref OpenAlex
  18. Simon M Bury , Darren Hedley , Mirko Uljarević , Cheryl Dissanayake , Eynat Gal (2019). If you’ve employed one person with autism …: An individual difference approach to the autism advantage at work . Autism, 23(6), 1607-1608. SAGE Publications.
    Crossref OpenAlex OpenCitations
  19. O. Ivar Lovaas (1971). Certain comparisons between psychodynamic and behavioristic approaches to treatment. Psychotherapy: Theory, Research & Practice, 8(2), 175-178. American Psychological Association (APA).
    Type: Article DOI: 10.1037/h0086648 OpenAlex: https://openalex.org/W1983102045
    Crossref OpenAlex OpenCitations
  20. Jana Brinkert , Anna Remington (2020). Making sense of the perceptual capacities in autistic and non-autistic adults . Autism, 24(7), 1795-1804. SAGE Publications.
    Crossref OpenAlex OpenCitations
  21. Andres Roman-Urrestarazu , Robin van Kessel , Carrie Allison , Fiona E. Matthews , Carol Brayne , Simon Baron-Cohen (2021). Association of Race/Ethnicity and Social Disadvantage With Autism Prevalence in 7 Million School Children in England . JAMA Pediatrics, 175(6), e210054. American Medical Association (AMA).
    Crossref OpenAlex OpenCitations
  22. Tomoko Isomura , Shino Ogawa , Masahiro Shibasaki , Nobuo Masataka (2015). Delayed disengagement of attention from snakes in children with autism . Frontiers in Psychology, 6, 241-241. Frontiers Media SA.
    Crossref OpenAlex OpenCitations
  23. Tinka Bröring , Nanda Rommelse , Joseph Sergeant , Erik Scherder (2008). Sex differences in tactile defensiveness in children with ADHD and their siblings . Developmental Medicine & Child Neurology, 50(2), 129-133. Wiley.
    Crossref OpenAlex OpenCitations
  24. Anselm B. M. Fuermaier , Philippa Hüpen , Stefanie M. De Vries , Morgana Müller , Francien M. Kok , Janneke Koerts et al. (2018). Perception in attention deficit hyperactivity disorder . ADHD Attention Deficit and Hyperactivity Disorders, 10(1), 21-47. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  25. Romy Weiland , Michael Macht , Heiner Ellgring , Silke Groß-Lesch , Klaus-Peter Lesch , Paul Pauli (2011). Olfactory and gustatory sensitivity in adults with attention-deficit/hyperactivity disorder . ADHD Attention Deficit and Hyperactivity Disorders, 3(1), 53-60. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  26. Louise Camm-Crosbie , Louise Bradley , Rebecca Shaw , Simon Baron-Cohen , Sarah Cassidy (2019). ‘People like me don’t get support’: Autistic adults’ experiences of support and treatment for mental health difficulties, self-injury and suicidality . Autism, 23(6), 1431-1441. SAGE Publications.
    Crossref OpenAlex OpenCitations
  27. Jay R. Lucker , Donna Geffner , William Koch (1996). Perception of loudness in children with ADD and without ADD . Child Psychiatry and Human Development, 26(3), 181-190. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  28. Laura Crane , Richard Batty , Hanna Adeyinka , Lorna Goddard , Lucy A. Henry , Elisabeth L. Hill (2018). Autism Diagnosis in the United Kingdom: Perspectives of Autistic Adults, Parents and Professionals . Journal of Autism and Developmental Disorders, 48(11), 3761-3772. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  29. Marcel Romanos , Tobias J. Renner , Martin Schecklmann , Bettina Hummel , Miriam Roos , Christine von Mering et al. (2008). Improved Odor Sensitivity in Attention-Deficit/Hyperactivity Disorder . Biological Psychiatry, 64(11), 938-940. Elsevier BV.
    Crossref OpenAlex OpenCitations
  30. John Swettenham , Anna Remington , Patrick Murphy , Maike Feuerstein , Kelly Grim , Nilli Lavie (2014). Seeing the unseen: Autism involves reduced susceptibility to inattentional blindness. Neuropsychology, 28(4), 563-570. American Psychological Association (APA).
    Crossref OpenAlex OpenCitations
  31. Laura Crane , Lorna Goddard , Linda Pring (2009). Sensory processing in adults with autism spectrum disorders . Autism, 13(3), 215-228. SAGE Publications.
    Crossref OpenAlex OpenCitations
  32. Eya‐Mist Rødgaard , Kristian Jensen , Kamilla Woznica Miskowiak , Laurent Mottron (2022). Representativeness of autistic samples in studies recruiting through social media . Autism Research, 15(8), 1447-1456. Wiley.
    Type: Article DOI: 10.1002/aur.2777 OpenAlex: https://openalex.org/W4284991023
    Crossref OpenAlex OpenCitations
  33. Mihály Csíkszentmihályi (2013). Creativity: The psychology of discovery and invention .
    Type: Book OpenAlex: https://openalex.org/W3094958046
    Crossref OpenAlex
  34. RONALD C. KESSLER , LENARD ADLER , MINNIE AMES , OLGA DEMLER , STEVE FARAONE , EVA HIRIPI et al. (2005). The World Health Organization adult ADHD self-report scale (ASRS): a short screening scale for use in the general population . Psychological Medicine, 35(2), 245-256. Cambridge University Press (CUP).
    Crossref OpenAlex OpenCitations
  35. Dillman D. A. (2007). Mail and Internet surveys: The tailored design method . Mail and Internet surveys: The tailored design method.
    Type: Other
    Crossref
  36. Petra Lietz (2010). Research into Questionnaire Design: A Summary of the Literature . International Journal of Market Research, 52(2), 249-272. SAGE Publications.
    Crossref OpenAlex OpenCitations
  37. Annie Dupuis , Piyumi Mudiyanselage , Christie L. Burton , Paul D. Arnold , Jennifer Crosbie , Russell J. Schachar (2022). Hyperfocus or flow? Attentional strengths in autism spectrum disorder . Frontiers in Psychiatry, 13, 886692-886692. Frontiers Media SA.
    Crossref OpenAlex OpenCitations
  38. Ashley Robertson , David R. Simmons (2013). The Relationship between Sensory Sensitivity and Autistic Traits in the General Population . Journal of Autism and Developmental Disorders, 43(4), 775-784. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  39. Anna Remington , John G. Swettenham , Nilli Lavie (2012). Lightening the load: Perceptual load impairs visual detection in typical adults but not in autism. Journal of Abnormal Psychology, 121(2), 544-551. American Psychological Association (APA).
    Type: Article DOI: 10.1037/a0027670 OpenAlex: https://openalex.org/W2091804330
    Crossref OpenAlex OpenCitations
  40. Jonna M Eriksson , Lisa MJ Andersen , Susanne Bejerot (2013). RAADS-14 Screen: validity of a screening tool for autism spectrum disorder in an adult psychiatric population . Molecular Autism, 4(1), 49. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  41. Lessa M. Schippers , Lisa I. Horstman , Hans van de Velde , Rob Rodrigues Pereira , Janneke Zinkstok , Jeanette C. Mostert et al. (2022). A qualitative and quantitative study of self-reported positive characteristics of individuals with ADHD . Frontiers in Psychiatry, 13, 922788-922788. Frontiers Media SA.
    Crossref OpenAlex OpenCitations
  42. Sophie Forster , David J. Robertson , Alistair Jennings , Philip Asherson , Nilli Lavie (2014). Plugging the attention deficit: Perceptual load counters increased distraction in ADHD. Neuropsychology, 28(1), 91-97. American Psychological Association (APA).
    Crossref OpenAlex OpenCitations
  43. Matthew Hollocks , Jian Wei Lerh , Iliana Magiati , Richard Meiser-Stedman , Traolach Brugha (2019). Anxiety and depression in adults with autism spectrum disorder: a systematic review and meta-analysis . Psychological Medicine, 49(4), 559-572. Cambridge University Press (CUP).
    Crossref OpenAlex OpenCitations
  44. Lea Tufford , Peter Newman (2012). Bracketing in Qualitative Research . Qualitative Social Work, 11(1), 80-96. SAGE Publications.
    Crossref OpenAlex OpenCitations
  45. Yvonne Groen , Ulrike Priegnitz , Anselm B.M. Fuermaier , Lara Tucha , Oliver Tucha , Steffen Aschenbrenner et al. (2020). Testing the relation between ADHD and hyperfocus experiences . Research in Developmental Disabilities, 107, 103789. Elsevier BV.
    Crossref OpenAlex OpenCitations
  46. Morgan M. Grotewiel , Megan E. Crenshaw , Amelia Dorsey , Elizabeth Street (2023). Experiences of hyperfocus and flow in college students with and without Attention Deficit Hyperactivity Disorder (ADHD) . Current Psychology, 42(16), 13265-13275. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  47. Hallowell E. (2021). ADHD 2.0: New science and essential strategies for thriving with distraction-from childhood through adulthood . ADHD 2.0: New science and essential strategies for thriving with distraction-from childhood through adulthood.
    Type: Other
    Crossref
  48. Nilli Lavie (2005). Distracted and confused?: Selective attention under load . Trends in Cognitive Sciences, 9(2), 75-82. Elsevier BV.
    Crossref OpenAlex OpenCitations
  49. Martine Hoogman , Marije Stolte , Matthijs Baas , Evelyn Kroesbergen (2020). Creativity and ADHD: A review of behavioral studies, the effect of psychostimulants and neural underpinnings . Neuroscience & Biobehavioral Reviews, 119, 66-85. Elsevier BV.
    Crossref OpenAlex OpenCitations
  50. Susan Leekam , Carmen Nieto , Sarah J. Libby , Lorna Wing , Judith Gould (2007). Describing the Sensory Abnormalities of Children and Adults with Autism . Journal of Autism and Developmental Disorders, 37(5), 894-910. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  51. Kathleen E. Hupfeld , Tessa R. Abagis , Priti Shah (2019). Living “in the zone”: hyperfocus in adult ADHD . ADHD Attention Deficit and Hyperactivity Disorders, 11(2), 191-208. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  52. Remington, A.M. (2010). Selective attention and perceptual load in autism spectrum disorder . UCL Discovery (University College London).
    Type: Dissertation OpenAlex: https://openalex.org/W2154557738
    OpenAlex
  53. Ying Rong , Chang-Jiang Yang , Ye Jin , Yue Wang (2021). Prevalence of attention-deficit/hyperactivity disorder in individuals with autism spectrum disorder: A meta-analysis . Research in Autism Spectrum Disorders, 83, 101759. Elsevier BV.
    Crossref OpenAlex OpenCitations
  54. Lorcan Kenny , Caroline Hattersley , Bonnie Molins , Carole Buckley , Carol Povey , Elizabeth Pellicano (2016). Which terms should be used to describe autism? Perspectives from the UK autism community . Autism, 20(4), 442-462. SAGE Publications.
    Crossref OpenAlex OpenCitations
  55. Anna Remington , Jake Fairnie (2017). A sound advantage: Increased auditory capacity in autism . Cognition, 166, 459-465. Elsevier BV.
    Crossref OpenAlex OpenCitations
  56. Laura Foran Lewis (2017). A Mixed Methods Study of Barriers to Formal Diagnosis of Autism Spectrum Disorder in Adults . Journal of Autism and Developmental Disorders, 47(8), 2410-2424. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  57. Tamara E. Rosen , Carla A. Mazefsky , Roma A. Vasa , Matthew D Lerner (2018). Co-occurring psychiatric conditions in autism spectrum disorder . International Review of Psychiatry, 30(1), 40-61. Informa UK Limited.
    Crossref OpenAlex OpenCitations
  58. Victoria Clarke , Virginia Braun (2014). Thematic Analysis . In Encyclopedia of Critical Psychology (pp. 1947-1952). Springer New York.
    OpenCitations
  59. Eric Rubenstein , Sarah Furnier (2021). #Bias: The Opportunities and Challenges of Surveys That Recruit and Collect Data of Autistic Adults Online . Autism in Adulthood, 3(2), 120-128. SAGE Publications.
    Crossref OpenAlex OpenCitations
  60. Anna Remington , Mary Hanley , Susanna O’Brien , Deborah M. Riby , John Swettenham (2019). Implications of capacity in the classroom: Simplifying tasks for autistic children may not be the answer . Research in Developmental Disabilities, 85, 197-204. Elsevier BV.
    Crossref OpenAlex OpenCitations
  61. Soheil Mahdi , Marisa Viljoen , Rafael Massuti , Melissa Selb , Omar Almodayfer , Sunil Karande et al. (2017). An international qualitative study of ability and disability in ADHD using the WHO-ICF framework . European Child & Adolescent Psychiatry, 26(10), 1219-1231. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  62. Male I. (2020). bibr43-27546330241229004 Integrated Healthcare Journal, 2(1).
    Type: Other
    Crossref
  63. Larry R. Arnold *Autistic author. Learn more… (2020). Autonomy, the Critical Journal of Interdisciplinary Autism Studies . In Autistic community and the Neurodiversity movement (pp. 211-220). Springer Singapore.
  64. Milton D. (2013). bibr45-27546330241229004 Autonomy, the Critical Journal of Interdisciplinary Autism Studies, 1(2).
    Type: Other
    Crossref
  65. Milton D. (2014). bibr46-27546330241229004 Autonomy, the Critical Journal of Interdisciplinary Autism Studies, 1(3).
    Type: Other
    Crossref
  66. Paola Pennisi , Laura Giallongo , Giusy Milintenda , Michela Cannarozzo (2021). Autism, autistic traits and creativity: a systematic review and meta-analysis . Cognitive Processing, 22(1), 1-36. Springer Science and Business Media LLC.
    Crossref OpenAlex OpenCitations
  67. (n.d.). Nerenberg J. (2016, July 6). When adult ADHD looks something like ‘flow’. The Cut. https://www.thecut.com/2016/07/when-adult-adhd-looks-something-like-flow.html
    Type: Other
    Crossref
  68. (n.d.). Office for National Statistics. (2022, November). Ethnic group, England and Wales—Office for National Statistics. https://www.ons.gov.uk/peoplepopulationandcommunity/culturalidentity/ethnicity/bulletins/ethnicgroupenglandandwales/census2021
    Type: Other
    Crossref
  69. Michelle A. O'Riordan , Kate C. Plaisted , Jon Driver , Simon Baron-Cohen (2001). Superior visual search in autism. Journal of Experimental Psychology: Human Perception and Performance, 27(3), 719-730. American Psychological Association (APA).
    Crossref OpenAlex OpenCitations
  70. (n.d.). Person first vs. Identity first language with ADHD. (2021, October 30). [Reddit Post]. R/ADHD. www.reddit.com/r/ADHD/comments/qj3w3p/person_first_vs_identity_first_language_with_adhd/
    Type: Other
    Crossref
  71. (n.d.). Poole D., Irvine B., Elise F., Brinkert J., Alderson L., Crane L. … Remington A. (2022, December 17). Coding neurodiverse profiles of attentional and perceptual experiences. Retrieved from osf.io/jmxpz
    Type: Other
    Crossref
  72. Qualtrics XM. (n.d.). Qualtrics. https://www.qualtrics.com/uk/
    Type: Other
    Crossref
  73. Lennard J. Davis (2013). The Disability Studies Reader . Routledge.
    OpenAlex
  74. PETER M. CHISNALL (2007). Mail and Internet Surveys: The Tailored Design Method . Journal of Advertising Research, 47(2), 207. Informa UK Limited.
    OpenAlex
  75. Daniel Poole , Jana Brinkert , Freya Elise *Autistic author. Learn more… , Elizabeth Milne , Laura Crane , Anna Remington et al. (2022). Coding neurodiverse profiles of attentional and perceptual experiences. OSF Preprints (OSF Preprints).
    Type: Preprint OpenAlex: https://openalex.org/W7064794860
    OpenAlex
  76. Shakespeare T. (2013). The disability studies reader . The disability studies reader, 214.
    Type: Other
    Crossref
  77. Superior perceptual capacity in autism: Investigating universality, specificity and practical applications for learning. (n.d.). https://gtr.ukri.org/projects?ref=ES/T005785/1
    Type: Other
    Crossref